[Event "Hoch-70, 2nd commendation"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "2. Afek Y."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "1K6/3kP3/1P6/8/8/3rp3/8/7R w - - 0 1"]
[PlyCount "15"]
[EventDate "2016.??.??"]

1. b7 e2 (1... Kxe7 2. Rb1 $1 e2 3. Ka7 {(Kc7)} Ra3+ 4. Kb6 $18) 2. e8=Q+ $1 (
2. Ra1 $2 Re3 $1 3. Ka8 e1=Q 4. Rxe1 Rxe1 5. b8=Q Ra1+ $11) (2. Re1 $2 Re3 3.
e8=Q+ Kxe8 $1 (3... Rxe8+ 4. Ka7 Re3 5. b8=Q Ra3+ 6. Kb7 Rb3+ 7. Ka8 $1 Ra3+ 8.
Qa7+ $18) 4. Kc7 Rc3+ 5. Kb6 Rb3+ 6. Kc6 Rc3+ 7. Kd6 Rd3+ 8. Kc5 Rb3 9. Rxe2+
Kd7 $11) 2... Kxe8 3. Ra1 $1 (3. Rc1 $2 Kd7 $1 4. Ka7 Ra3+ 5. Kb6 Rb3+ $11)
3... Rd1 (3... Kd7 4. Ka8 $1 Rd1 5. Ra7 $3 e1=Q 6. b8=Q+ $18) 4. Kc7 $1 e1=Q (
4... Rxa1 5. b8=Q+ Kf7 6. Qb3+ $18) 5. b8=Q+ Ke7 (5... Kf7 6. Qb3+ $18) 6. Qd8+
$3 Rxd8 7. Rxe1+ Kf7 8. Kxd8 $18 1-0

[Event "10th WCCT, 15-16th place"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Arestov P."]
[Black "WCCI 9"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "3r4/4k1NR/4P3/1P6/b3K3/Ppp5/7p/8 w - - 0 1"]
[PlyCount "31"]
[EventDate "2016.??.??"]

1. Ke5 $1 Rd5+ $1 2. Kxd5 Kf6 $1 (2... b2 3. Nh5+ $18) 3. e7 $1 (3. Rxh2 $2 b2
4. Ne8+ Kg6 $19) 3... Bxb5 $1 (3... Kxe7 $2 4. Ke5 $18) 4. a4 $3 ({Logical try:
} 4. e8=Q $2 Bxe8 5. Nxe8+ Kg5 6. Rxh2 b2 $1 7. Rg2+ Kf4 8. Rf2+ Ke3 $1 (8...
Kg3 $2 9. Rc2 $1 $11) 9. Nf6 $5 (9. Rc2 Kd3 $19) 9... Kxf2 $1 (9... b1=Q 10.
Ng4+ Kd3 11. Ne5+ Ke3 12. Ng4+ {perpetual check} ({Rusz} 12. Rf3+ $2 Kd2 13.
Nc4+ Kc2 $1 $19)) 10. Ne4+ Ke3 (10... Ke2) 11. Nxc3 Kd3 12. Nb1 Kc2 $19 {
position X with Pa3.}) 4... Bxa4 5. e8=Q Bxe8 6. Nxe8+ Kg6 7. Rxh2 b2 $1 (7...
c2 8. Rg2+ $1 Kh6 9. Rh2+ Kg5 10. Nd6 $1 c1=Q 11. Nc4 $1 Qc2 $1 12. Rd2 $1 $11)
8. Rg2+ Kh6 $1 9. Rh2+ Kg5 10. Rg2+ Kf4 11. Rf2+ Ke3 $1 (11... Kg3 12. Rc2 $1
$11) 12. Nf6 $3 (12. Rc2 $2 Kd3 $19) 12... Kxf2 (12... b1=Q 13. Ng4+ Kd3 14.
Ne5+ Ke3 15. Ng4+ {perpetual check} ({or} 15. Rf3+ $11)) 13. Ne4+ Ke3 14. Nxc3
Kd3 15. Nb1 Kc2 {position X1 without Pa3} 16. Na3+ $1 {
draw. Logical study with the effect of foresight in 12 moves.} 1/2-1/2

[Event "Russian Team Championship, 1st place"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Arestov P."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/6Nk/nQ6/8/8/2p2n2/2Pp2P1/1K1b4 w - - 0 1"]
[PlyCount "21"]
[EventDate "2018.??.??"]

1. Ne8 $3 (1. Nf5 $2 Bxc2+ 2. Kxc2 Nb4+ 3. Qxb4 Ne1+ 4. Kxc3 d1=Q 5. Qe7+ Kg6
6. Qe6+ Kg5 $11) (1. Ne6 $2 Bxc2+ 2. Kxc2 Nb4+ 3. Qxb4 Ne1+ 4. Kxc3 d1=Q 5.
Qe7+ Kg6 6. Qg7+ Kf5 $11) 1... Bxc2+ $1 (1... Be2 2. Qb7+ Kg6 3. Qe4+ $18) (
1... Ne1 2. Qf6 $18) 2. Kxc2 Nb4+ $1 3. Qxb4 Ne1+ 4. Kxc3 $3 (4. Kd1 $2 c2+ 5.
Kxd2 c1=Q+ 6. Kxc1 Nd3+ {fork.}) 4... d1=Q 5. Qe7+ Kg6 6. Qf6+ $1 Kh5 (6... Kh7
7. Qg7#) 7. Ng7+ Kg4 8. Qg6+ Kf4 9. Nh5+ {A)} Ke3 ({B)} 9... Ke5 10. Qf6+ Ke4 (
10... Kd5 11. Qd8+) 11. Qe6# {model mate 2.}) 10. Qb6+ Ke2 11. Ng3# {
model mate 1. Two model mates in the centre of the board.} 1-0

[Event "Die Schwalbe"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Arestov P."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "2rk4/3B4/3K4/7p/7P/8/4p2B/8 w - - 0 1"]
[PlyCount "21"]
[EventDate "2018.??.??"]

1. Be5 $1 (1. Bf4 $2 Rc6+ $1 2. Kxc6 e1=Q 3. Bg5+ Qe7 {zz wtm} 4. Bf5 Ke8 5.
Bg6+ Kf8 6. Bxe7+ Kxe7 $11) 1... Rc6+ $1 2. Kxc6 e1=R $1 (2... e1=Q 3. Bf6+ Qe7
4. Bg5 $1 {zz btm} Qxg5 5. hxg5 $18) 3. Bf6+ Re7 4. Bg4 $1 (4. Bf5 $2 Ke8 5.
Bg6+ Kf8 6. Bxh5 Re6+ $11) (4. Bg5 $2 {stalemate.}) 4... hxg4 (4... Ke8 5.
Bxh5+ Kf8 6. Kd5 $18) 5. Kd6 Ke8 6. Bxe7 Kf7 7. Bd8 $1 (7. Bg5 $2 g3 8. Ke5 Kg6
9. Bd8 g2 10. Bb6 Kh5 $11) 7... g3 8. Ke5 Kg6 9. Kf4 g2 10. Bb6 Kh5 11. Kg3 {
1-0 Mutual zugzwang in try, black phenix.} 1-0

[Event "Moscow ty, Special prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "6. Arestov P."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "R4R2/8/8/6k1/2K4p/6p1/5r2/8 w - - 0 1"]
[PlyCount "27"]
[EventDate "2017.??.??"]

1. Rg8+ $1 (1. Rxf2 $2 gxf2 2. Rf8 h3 $1 $11) 1... Kf4 2. Kd3 $1 Kf3 (2... h3
3. Raf8+ Ke5 4. Rxf2 gxf2 5. Ke2 $18) 3. Ra4 $1 h3 4. Rag4 g2 (4... Rg2 5. Rh4
h2 6. Rf8#) 5. R4g6 $3 {with lines A and B: A)} ({Try} 5. R4g7 $2 Kf4 $1 6.
Rf8+ Ke5 7. Rxf2 h2 $11) 5... Rd2+ $1 ({B)} 5... Kf4 6. Rf8+ $1 Ke5 7. Rxf2 h2
8. Rgf6 $1 h1=Q 9. R2f5# {echo-mate 4.}) 6. Kxd2 h2 7. Kd3 $1 Kf4 8. Kd4 $1 Kf5
9. Rg5+ $1 Kf6 10. R8g6+ Kf7 11. Rg7+ $1 {A1)} (11. Ke5 $2 h1=Q 12. Rg7+ Ke8
13. Rg8+ Kd7 14. R5g7+ Kc6 $11) 11... Ke8 ({A2)} 11... Kf6 12. Ke4 $1 h1=Q 13.
R5g6# {echo-mate 2.}) ({A3)} 11... Ke6 12. Ke4 $1 Kd6 13. R5g6+ Kc5 14. Rc7+
Kb4 15. Rb7+ Kc5 (15... Ka5 16. Rg3 Ka4 17. Rg8 h1=Q 18. Ra8#) 16. Rbb6 $1 h1=Q
17. Rgc6# {echo-mate 3.}) 12. Rg8+ Kf7 (12... Kd7 13. Kd5 $1 h1=Q 14. R5g7#)
13. Ke5 $1 h1=Q 14. R5g7# {echo-mate 1. Four echo-mate, miniature.} 1-0

[Event "FIDE World Cup, 1st prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "1. Bazlov Y."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "k2K4/4n1n1/1P3R2/4r3/8/4N3/8/4B3 w - - 0 1"]
[PlyCount "35"]
[EventDate "2017.??.??"]

{To win white enough to win one of the black knights, even at the cost of
their own pawn} 1. Bf2 $1 Ne8 $1 (1... Re4 2. Kd7 $1 Kb7 3. Rf7 $1 Nh5 4. Kd6
Kxb6 5. Nd5+ Ka6 6. Rxe7 Rxe7 7. Nxe7 {
and white gradually wins because of the poor position of the black knight.} ({
MM: right} 7. Kxe7 $1 $18)) 2. Rf3 $1 (2. Rh6 $2 {difficult side line}) 2...
Nc6+ 3. Kc8 $1 Rc5 $1 4. b7+ Ka7 5. b8=Q+ Nxb8+ 6. Kd8 Rc8+ $1 (6... Nd6 7. Nc4
Nb7+ 8. Ke7 Ka6 9. Bxc5 $18 {EGTB.} Nxc5) 7. Kxc8 Nd6+ $1 8. Kc7 $1 ({
Thematic try} 8. Kd8 $2 Nc6+ 9. Kc7 (9. Kd7 Ne5+ 10. Kxd6 Nxf3 $11) 9... Nb5+
10. Kxc6 (10. Kc8 Nd6+) 10... Nd4+ 11. Kd5 Nxf3 12. Nf1+ Kb7 13. Ke4 Ng5+ {
draw.}) 8... Nb5+ 9. Kd8 $1 Nc6+ 10. Ke8 $1 Nc7+ 11. Kf8 $1 (11. Kd7 $2 Ne5+) (
11. Kf7 $2 Ne5+) 11... Ne6+ 12. Kg8 $1 Ne7+ 13. Kh8 $1 (13. Kf7 $2 Ng5+) (13.
Kh7 $2 Ng5+ {draw.}) 13... Ng6+ 14. Kh7 $1 Ng5+ 15. Kxg6 Nxf3 16. Nf1+ $1 Kb7
17. Kf5 $1 Kc6 18. Kf4 $1 {
win. In the study implemented the theme of overcoming perpetual check.} 1-0

[Event "Yerevan-2800, 3rd prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Bazlov Y."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "4r1r1/Pb2n2N/k2P4/2KPb3/2pN4/8/B7/4R3 w - - 0 1"]
[PlyCount "27"]
[EventDate "2018.??.??"]

1. a8=Q+ Bxa8 (1... Rxa8 2. Bxc4+ Ka7 3. Nb5+ Kb8 4. dxe7 $18) 2. Bxc4+ (2.
Rxe5 $2 Rc8+ 3. Kb4 Nxd5+ $10) 2... Ka7 3. Rxe5 (3. Nb5+ $2 Kb8 4. Rxe5 Rc8+ 5.
Nc7 Nxd5 6. Rxd5 Rg7 $10) 3... Rc8+ $1 (3... Nxd5 4. Rxe8 Rxe8 5. Bxd5 Bxd5 6.
Kxd5 Kb7 7. Ne6 Kb6 8. d7 Rb8 9. Nf6 Ra8 10. Kd6 Rb8 11. Ne8 Ra8 12. Ke7 Kc6
13. Nd8+ Kb6 14. Nd6 Kc5 15. Nc8 $18) (3... Nc8 {or 3. Ng6} 4. Rxe8 Rxe8 5. d7
$18) 4. Kb5 $1 Rb8+ $1 5. Ka5 $1 Nc8 $1 (5... Ng6 6. Re6 Rb1 7. Nb5+ $18) 6.
Re6 $1 (6. d7 $2 Nb6 $1 7. Ba6 Bxd5 8. Nb5+ Ka8 9. Nc7+ Ka7 10. Nxd5 Rg1 $1 11.
Nxb6 Rxb6 12. Bb5 Ra1+ 13. Kb4 Rb1+ 14. Kc3 Rd6 15. Nf6 Rc1+ 16. Kb4 Rcd1 17.
Ba4 R1d2 18. Re7 Kb6 {and white can't make progress. For example} 19. Ne4 R6d4+
20. Kb3 R4d3+ {draw}) 6... Rd8 7. d7 $1 Rxd7 8. Ra6+ $1 Kb7 9. Nf6 $1 Rd6 10.
Ne8 $1 Rxa6+ (10... Rd8 11. Rb6+ Nxb6 12. Ba6+ Ka7 13. Nb5#) 11. Bxa6+ Ka7 12.
Bb7 $22 Kxb7 (12... Rxb7 13. Nc6#) (12... Bxb7 13. Nb5+ $1 Ka8 14. Nec7#) (
12... Nd6 13. Nxd6 Bxb7 (13... Rc8 14. Bxc8) 14. N4b5+ Ka8 15. Nc7+ Ka7 16.
Ndb5#) 13. Nb5 $22 Nd6 14. Nexd6# $1 {Perfect mate with two active blocks. In
the study to win for the first time presented a combination of Novotny in the
form of mutual zugzwang. An attempt to destroy it leads to the immuring of the
black rook and bishop, which took their places in the game, but eventually
became a hindrance to save the king. This allows white small forces to turn
off from the fight all the opponent's pieces, again putting them in the
position of mutual zugzwang, and then strike the decisive blow.} 1-0

[Event "J.Stigter-64 JT, 3rd prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "4. Bazlov Y."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "2b5/3k4/2pP4/2Q4P/8/1q2B1K1/8/2n5 w - - 0 1"]
[PlyCount "29"]
[EventDate "2018.??.??"]

1. h6 $1 (1. Qxc1 $2 Qd3) 1... Ne2+ $1 (1... Qd3 2. h7 Qxh7 3. Qa7+) (1... Qg8+
2. Qg5 Ne2+ 3. Kg2 $18) 2. Kh4 $1 (2. Kh2 $2 Qb2 3. h7 Nf4+ 4. Kg3 Ne6) 2...
Ke6 $1 (2... Qa4+ 3. Kg5 Ke6 4. Qf5+ Kxd6 5. Qxc8) (2... Qb2 3. h7 Qh8 4. Qf5+
Kxd6 5. Bc5+ Kc7 6. Qf7+) (2... Qb1 3. Qe5 c5 4. Qe7+ Kc6 5. Qc7+ Kd5 6. Qxc5+
{with win.}) 3. h7 $1 (3. Qg5 $2 Qc4+ 4. Kh5 Qc2 5. Qe7+ Kd5 6. d7 Qf5+ 7. Qg5
Ng3+ 8. Kh4 Bxd7 9. h7 Ke4 10. Qxf5+ Nxf5+ 11. Kg5 Kxe3 $11) (3. d7 $2 Bxd7 4.
h7 Qa4+ 5. Kg5 Ng3 6. Qf8 Qa5+ {draw.}) 3... Qa4+ $1 (3... Qb2 4. Qc4+ Kxd6 5.
Qc5+ Ke6 6. Qxc6+) 4. Kg5 $1 Kf7 $1 5. d7 $1 Bxd7 6. Bd4 $3 ({Thematic try} 6.
h8=N+ $2 Kg8 $1 (6... Kg7 $2 7. Qe7+ Kxh8 8. Kh6) ({Interesting win after} 6...
Ke6 $2 7. Qf5+ Kd6 8. Nf7+ Kc7 9. Qe5+ Kb7 10. Nd6+ Ka6 11. Ne4 $1 Qa2 12. Nc5+
Ka5 13. Kh6 $1 Qc2 14. Nxd7+ Ka4 15. Nc5+ Kb4 16. Ne4 Ka3 17. Bg5 Ka4 18. Kg7
Qd1 19. Kf8 Qc2 20. Be7 $18) 7. Ng6 Qb5 $11) 6... Nxd4 (6... Qxd4 7. Qxd4 Nxd4
8. h8=Q) (6... Ng3 7. h8=Q Ne4+ 8. Kh6 Nxc5 9. Qf6+ Ke8 10. Bxc5 $18) 7. Qf8+
$3 Kxf8 8. Kf6 $3 Qc4 (8... Be6 9. h8=Q+ Bg8 10. Qg7+ Ke8 11. Qe7#) 9. h8=Q+
Qg8 10. Qh6+ $1 Ke8 11. Qh5+ Kd8 (11... Kf8 12. Qc5+ Ke8 13. Qe7#) 12. Qa5+ $1
Kc8 13. Qa8+ Kc7 14. Qxg8 c5 15. Qd5 $1 {win.} 1-0

[Event "20th Russian Team Champ., 2nd place"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Bazlov Y."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/6B1/6B1/8/2kPK3/4Q1Nb/qpP5/1n6 b - - 0 1"]
[PlyCount "20"]
[EventDate "2018.??.??"]

1... Nc3+ $1 2. Kf3 $1 (2. Kf4 $2 b1=Q 3. Qd3+ Kd5 4. Bf7+ Be6 5. Bxe6+ Kxe6 6.
Qf5+ Ke7 7. Bf6+ Kd6 8. Be5+ Kc6 $1 $11) 2... b1=Q $1 (2... Qa8+ 3. Ne4 ({or} 
3. Be4)) 3. Qd3+ $1 Kd5 $1 (3... Kb4 4. Bf8+ Ka5 5. Qxc3+ Ka6 6. Qc6+ Ka7 7.
Bc5+ Kb8 8. Qe8+ Kc7 9. Qe5+ Kc8 10. Qh8+ Kc7 11. Qxh3 {with win on material.})
4. Qxc3 $1 (4. Bf7+ $2 Be6 5. Qxc3 Qbxc2 $1 6. Bxe6+ Kxe6 7. Qxc2 Qxc2 8. Be5)
4... Qb6 $1 5. Nf5 $1 (5. Ne4 $2 Qxg6 6. Nf6+ Qxf6+ 7. Bxf6 Qc4 8. Qa5+ Ke6 9.
Qe5+ Kd7 10. Qe7+ Kc6 11. Kg3 Be6 $11) 5... Bxf5 $1 (5... Bg4+ 6. Kxg4 Qxg6+ 7.
Kf4 $1 {and mate is inevitable.}) 6. Bxf5 Qaa7 $1 {
the queens must act in concert.} ({In case} 6... Qab1 7. Kg2 $1 Qc1 (7... Qd1
8. Qe3 $18) 8. Qf3+ $1 Kd6 9. Be5+ Ke7 10. Bf4 $1 {
white easily realizes his positional superiority.}) 7. Be5 $1 Qf7 $1 8. Qc8 Qc6
$1 {An unusual series of quiet moves queens, running to the aid of their king.}
(8... Qh5+ 9. Bg4 $1 (9. Kf2 $2 Qh4+ $1 10. Kg2 Qg6+ $1 11. Bxg6 Qh1+ 12. Kxh1
{stalemate.}) 9... Qh1+ 10. Kf2 $1 Qh4+ 11. Kg2 $1 Qg5 12. Kf3 $1 $18) 9. c4+
$1 Qxc4 10. Qe6+ $1 Qxe6 11. Be4# $1 {The white bishop completes the fight on
the very spot where the king was in the initial position. Original picture
mate in the middle of a chessboard with two queens. Protecting their king from
numerous mate threats, they suddenly took away his last squares for retreat,
becoming the unwitting culprits of his death.} 1-0

[Event "10th WCCT, 2nd place"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "4. Becker R."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/2q4p/8/1R6/7B/2k5/Bp2K3/8 w - - 0 1"]
[PlyCount "37"]
[EventDate "2017.??.??"]

1. Bf6+ (1. Bg3 $2 b1=Q $1 $11) 1... Kc2 2. Be5 $1 (2. Rxb2+ $2 Kc1 3. Rb1+ Kc2
4. Rb4 Qh2+ $11) 2... Qe7 (2... Qc8 3. Rxb2+ Kc1 4. Rb1+ Kc2 5. Rb4 $18) (2...
Qc6 3. Bb3+ Kc1 4. Rd5 Qxd5 5. Bf4+ Kb1 6. Bxd5 $18) 3. Rxb2+ (3. Bb3+ $2 Kc1
4. Rd5 Qxe5+ 5. Rxe5 b1=Q $19) 3... Kc1 4. Rb1+ $1 ({Thematic try} 4. Rb5 $2
Qa3 5. Bb3 (5. Bc4 Kc2 $11) (5. Be6 Qa4 6. Rc5+ Kb1 7. Bf5+ Ka2 8. Be6+ Kb1 $11
) 5... Qa6 6. Bc4 Qa3 $1 {
(7.Rc5 is not playable with the Bishop is on e5 instead of d4)} ({not} 6... Qg6
$2 7. Bf4+ Kc2 8. Bb3+ Kc3 9. Be5# {model mate}) ({not} 6... Qh6 $2 7. Bb2+ Kc2
8. Bd3# {model mate}) 7. Rd5 Qa4 8. Rc5 Qc2+ ({or} 8... Qd1+ 9. Kf2 Qc2+ 10.
Kf3 {transposing}) 9. Kf3 h5 $1 (9... h6 $2 10. Bd4 Kd2 11. Be3+ Ke1 12. Bb5
Qd1+ 13. Kg3 Qd6+ 14. Kg2 Qg6+ 15. Kh2 Qd6+ 16. Kh1 $18) 10. Bd4 Kd2 11. Be3+
Ke1 12. Bb5 (12. Rg5 Qd1+ 13. Ke4 Qb1+ 14. Kf4 Qb8+ $11) 12... Qd1+ {draw})
4... Kc2 5. Rb5 Kc1 6. Rd5 $1 ({Thematic try} 6. Bb3 $2 Qa3 7. Kd3 Qf8 8. Ke2
Qa3 9. Bf4+ Kb2 10. Be5+ (10. Bg8+ Kc2 11. Bxh7+ Kc3 12. Bg8 Kc2 $11) 10... Kc1
11. Bd4 Qa6 (11... Qe7+ $2 12. Re5 $18) 12. Bc4 Qg6 $1 {
(15.Be5 model mate will not be possible with the Bishop on d4 instead of e5)} (
12... Qa3 $2 13. Rc5 Kb1 14. Bd3+ Ka2 15. Rc2+ Kb3 16. Rc3+ $18) (12... Qd6 $2
13. Bd3 Qh2+ 14. Bf2 $18) 13. Be3+ (13. Bb2+ Kc2 14. Bb3+ Kb1 $11) 13... Kc2
14. Bb3+ Kc3 15. Bd2+ Kd4 16. Rd5+ Ke4 17. Bc2+ Kxd5 {draw}) 6... Kc2 (6... Qb4
7. Rd1+ Kc2 8. Rd4 $18) 7. Rd2+ Kc1 8. Rd1+ Kc2 9. Rd5 h5 (9... Kc1 10. Bb3 $18
) (9... Qa3 10. Rd2+ $18) 10. Rb5 $1 ({Thematic try} 10. Rd2+ $2 Kc1 11. Rd1+
Kc2 12. Rd5 h4 {(the extra pawn move will draw)} 13. Rb5 Kc1 14. Bb3 Qa3 15.
Bd4 h3 $1 $11) 10... Kc1 11. Bb3 Qa3 12. Bd4 $1 (12. Kd3 $2 Qf8 13. Ke3 Qe7 14.
Ke2 Qa3 15. Bf4+ Kb2 16. Be5+ Kc1 {loss of time}) 12... Qa6 (12... Qe7+ 13. Re5
Qa3 (13... Qb4 14. Rc5+ Kb1 15. Bc4 Qa4 16. Rb5+ $18) 14. Rc5+ Kb1 15. Bc2+ Ka2
16. Rc7 Qa6+ 17. Kf2 $18) 13. Bc4 Qg6 14. Be3+ Kc2 15. Bb3+ Kc3 16. Bd2+ Kd4
17. Rd5+ Ke4 18. Bc2+ Kxd5 19. Bxg6 {wins. Logical study with economical
mechanism to reposition the dark square Bishop and remove guard of the g6
square.} 1-0

[Event "10th WCCT, 3rd-4th place"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "5. Becker R."]
[Black "WCCI 10.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/pp1k4/8/1R2PR1p/b4K2/1p6/P1P5/4r3 w - - 0 1"]
[PlyCount "37"]
[EventDate "2017.??.??"]

1. Rd5+ $1 (1. Rxb7+ $2 Kc6 2. Rxb3 (2. axb3 Kxb7 $11) 2... Bxb3 3. axb3 h4 $11
) 1... Ke7 2. axb3 Rf1+ (2... Bxb3 3. Rc5 $1 $18) 3. Ke4 Re1+ 4. Kd4 Rd1+ 5.
Kc5 $1 ({Thematic try} 5. Kc4 Bxb3+ 6. cxb3 Rc1+ 7. Kd4 Rd1+ 8. Ke4 Re1+ 9. Kf4
Rf1+ 10. Kg5 Rg1+ 11. Kh6 Ke6 12. Rg5 Rxg5 13. Kxg5 Kxd5 14. Kf6 h4 15. e6 h3
16. e7 h2 17. e8=Q h1=Q $11) 5... b6+ 6. Kc4 Bxb3+ 7. cxb3 Rc1+ 8. Kd4 Rd1+ 9.
Ke4 Re1+ 10. Kf4 Rf1+ 11. Kg5 Rg1+ 12. Kh6 Ke6 13. Rg5 Rxg5 14. Kxg5 Kxd5 15.
Kf6 h4 16. e6 h3 17. e7 h2 18. e8=Q h1=Q 19. Qa8+ {wins. Logical study with
foresight move by the white King to open the long diagonal.} 1-0

[Event "Jan Timman-65 JT, 3-4 hm (version)"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "1. Didukh S."]
[Black "WCCI 9.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "1n6/1R2PpN1/3R1p1k/1N2p2P/6pn/1B4Pp/7K/2q5 w - - 0 1"]
[PlyCount "21"]
[EventDate "2017.??.??"]

1. Nf5+ $1 Nxf5 (1... Kxh5 2. Nxh4 {knight defends g2.}) 2. Rxf6+ Kg7 $1 {
Black's plan is to sacrifice his pawn f7 for a stalemate on move 11.} ({
Second main line.} 2... Kg5 3. Rxf5+ Kxf5 4. Nd6+ Kg5 5. Ne4+ Kf5 6. Rc7 $1 (6.
Bd1 $2 Kxe4 7. Bxg4 Qd2+ 8. Kxh3 Qc1 $1 9. Rb4+ Ke3 10. Bf5 Nd7 11. Rb1 Qc8 12.
Rb8 Qxb8 13. Bxd7 Qh8 $11) 6... Qxc7 (6... Nc6 7. Rxc6 Qxc6 8. e8=Q $1 Qxe8 9.
Nd6+) 7. e8=N $1 (7. e8=Q $2 Kxe4 8. Qg8 Qd7 9. Qg5 Nc6 10. Bc2+ Kd5 11. Bf5
Nd4 $11) 7... Qc1 8. N8d6# {model mate by promoted knight.}) 3. Rxf7+ Kh6 4.
Rf6+ (4. Rb6+ $2 Nc6) 4... Kg5 5. Rxf5+ Kxf5 6. Nd6+ Kg5 7. Ne4+ Kf5 8. Rc7 $1
(8. Be6+ $2 Kxe4 9. Bxg4 Qf1 10. Bxh3 Qf7 11. h6 Kf3 $11) 8... Nc6 $1 9. Rxc6
Qxc6 10. e8=B $1 (10. e8=Q $2 Qc2+ $1 11. Bxc2 {stalemate.}) 10... Qc1 11. Bg6#
{model mate by promoted bishop. Black's logical idea is outplayed by another
minor promotion. Two model mates in the centre by promoted pieces.} 1-0

[Event "Olympic tourney, 1 prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Didukh S."]
[Black "WCCI 10"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "5K1R/6pP/3p1p2/6kp/3p1p2/1N1q4/P2P1P2/8 w - - 0 1"]
[PlyCount "29"]
[EventDate "2018.??.??"]

1. Nc1 $3 {White's foreplan.} ({Logical try} 1. Rg8 $2 Qxh7 2. Rxg7+ Qxg7+ 3.
Kxg7 h4 4. Nxd4 Kg4 $1 5. f3+ Kg5 6. Ne6+ Kf5 7. Nd4+ Ke5 8. Nc6+ Kd5 9. Ne7+
Kc4 $1 {Black's foreplan.} (9... Kc5 $2 10. Ng6 h3 11. Nxf4 h2 12. Nd3+ $1) 10.
d3+ (10. Nf5 h3 11. Nxd6+ Kd3 $1 $19) 10... Kc5 $1 11. Ng6 (11. Ng8 f5 $1)
11... h3 12. Nxf4 h2 $19 {and 13.Nd3+ is impossible.}) 1... Qc2 2. Rg8 Qxh7 3.
Rxg7+ Qxg7+ 4. Kxg7 d3 $1 (4... h4 5. Ne2 h3 (5... Kg4 6. Ng1 $11) 6. Ng1 $1 h2
7. Nf3+) 5. Nb3 $1 (5. Nxd3 $2 h4 6. f3 h3 7. Nf2 h2 8. a4 Kh4 9. a5 Kg3 10.
Nh1+ Kg2 11. a6 Kxh1 12. a7 Kg2 13. a8=Q h1=Q $19) 5... h4 6. Nd4 Kg4 $1 7. f3+
Kg5 $1 (7... Kg3 8. Nf5+ Kxf3 9. Nxh4+ Ke2 10. a4 $11) 8. Ne6+ Kf5 9. Nd4+ Ke5
10. Nc6+ Kd5 11. Ne7+ Kc4 (11... Kc5 12. Ng6 h3 13. Nxf4 h2 14. Nxd3+ Kd4 15.
Nf2) (11... Ke6 12. Ng6 h3 13. Nxf4+) 12. Nf5 $1 h3 13. Nxd6+ {
(13...Kd3 is impossible)} Kb4 14. Ne4 h2 15. Nf2 $11 {Knight and King make
similar manoeuvres to block d3 by an enemy pawn and not let each other on this
square on move 13.} 1/2-1/2

[Event "WCCT-10, 9-10 place"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "3. Didukh S."]
[Black "WCCI 11"]
[Result "1-0"]
[SetUp "1"]
[FEN "1r3N2/b4p2/4N2p/8/3p1P1k/8/3q1PP1/Q6K w - - 0 1"]
[PlyCount "29"]
[EventDate "2016.??.??"]

1. Qa3 $1 {Before capturing the bishop wQ forces move d3 so as to open the
a7-g1 diagonal and defend f2. But Black can thwart this plan.} Rb3 $1 ({After} 
1... d3 2. Qxa7 {wQ defends f2.} Rb1+ 3. Kh2 Qe1 4. Qe7+ Kg4 5. f3+ $18) 2.
Qxb3 (2. Qe7+ $2 Kg4 3. Qxf7 (3. Qd7 Rh3+ 4. gxh3+ Kf3 $11) 3... Rb5 $1 4. Qg7+
Rg5 5. fxg5 Qc1+ 6. Kh2 Bb8+ 7. g3 Bxg3+ 8. Kg2 Qc6+ {draw.}) 2... d3 3. Nc5 $3
(3. Ng6+ $2 fxg6 {shows that Ne6 is an obstacle (Qe6 is impossible).}) ({
Logical try shows another obstacle on move 12.} 3. Nd4 $2 Bxd4 $1 (3... Kg4 $2
4. Nf3 Qc1+ 5. Kh2 Qxf4+ 6. g3 Qxf3 7. Qa4+ Kg5 8. Qxa7 Qd5 9. Qc7 Kf6 10. Nd7+
$18) 4. Ng6+ fxg6 5. Qe6 $1 Qd1+ 6. Kh2 Qg4 7. g3+ Kh5 8. Qd5+ Qf5 9. Qf3+ Qg4
10. Qh1 $1 g5 11. f3 Qc8 12. f5 Qc2+ $1 13. Kh3 g4+ 14. fxg4+ Kg5 15. Qd5 Kf6
$1 16. Qxd4+ Ke7 $11) 3... Bxc5 (3... Qxf2 4. Qxd3 Qxc5 5. Qh3#) 4. Ng6+ $1
fxg6 5. Qe6 $1 Qd1+ (5... Qxf4 6. g3+ {fork-1}) 6. Kh2 Qg4 7. g3+ Kh5 8. Qd5+
Qf5 9. Qf3+ Qg4 10. Qh1 $1 g5 11. f3 Qc8 (11... Qe6 12. g4+ Kg6 13. f5+ {fork-2
}) 12. f5 $1 {Now Qc2+ is impossible.} g4 (12... Qxf5 13. g4+ {fork-3}) 13.
Kg2+ Kg5 14. Qh4+ Kxf5 15. Qxg4+ {1-0. Deep foresight. Solution and logical
try begin with different N-sacrifices.} 1-0

[Event "e4 e5, 100 Years Cup"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "4. Didukh S."]
[Black "WCCI 9.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/1p1N1p1k/b1q2P2/2p1p3/1p2p2p/2b5/6KP/2Q1B3 w - - 0 1"]
[PlyCount "25"]
[EventDate "2018.??.??"]

1. Qg5 $1 {The right way to create threat Qg7#.} ({After} 1. Nf8+ $2 Kg8 2. Qh6
h3+ {/Bf1+} 3. Kg1 Bd4+ 4. Bf2 Bxf2+ 5. Kxf2 e3+ 6. Kxe3 Qg2 $1 {
Black stops the mate.}) 1... Bf1+ $1 {Anticritical move.} ({
Second main line shows another preparation of Qg2.} 1... h3+ 2. Kg1 Bd4+ 3. Bf2
Bxf2+ 4. Kxf2 e3+ 5. Kxe3 Qg2 6. Nf8+ Kh8 7. Ng6+ $1 Kg8 (7... fxg6 8. Qh6+ Kg8
9. Qg7# {g-file is closed by Pg6.}) 8. Ne7+ Kf8 9. Qh6+ Ke8 10. Qh8+ Kd7 11.
Qc8+ Kd6 12. Nf5+ Kd5 13. Qd7+ Kc4 14. Qd3#) 2. Kg1 (2. Kxf1 $2 Qa6+ 3. Kg1
Bd4+) 2... Bd4+ 3. Bf2 Bxf2+ 4. Kxf2 e3+ 5. Ke1 $1 ({Logical try} 5. Kxe3 $2
Qg2 6. Nf8+ Kh8 7. Ng6+ Kg8 8. Ne7+ Kf8 9. Qh6+ Ke8 10. Qh8+ Kd7 11. Qc8+ Kd6
12. Nf5+ Kd5 13. Qd7+ Kc4 14. Qd3+ Bxd3 $1 {
Bishop is on the right side of the critical square d3.}) 5... Qg2 6. Nf8+ Kh8
7. Ng6+ $1 Kg8 8. Ne7+ Kf8 9. Qh6+ Ke8 10. Qh8+ Kd7 11. Qc8+ Kd6 12. Nf5+ Kd5
13. Nxe3+ $1 {That's why King didn't go to e3. White and black deep foresights
with sacrifices (Bf1+! Ng6+!) and capture refusals.} 1-0

[Event "Shakhmatnaya kompozitsia, 3 prize (versi"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "5. Didukh S."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/3K1b2/kP6/8/4B3/8/NR6/4q3 w - - 0 1"]
[PlyCount "19"]
[EventDate "2016.??.??"]

1. Nb4+ Ka5 2. Nc6+ Ka6 $1 3. b7 Be8+ $1 {
Black's plan is to sacrifice his bishop and queen for stalemate.} ({No time for
} 3... Qxe4 4. b8=N#) ({After} 3... Be6+ {the wK uses the bishop as a shield.}
4. Ke8 $1 Bf7+ 5. Kf8 $18) 4. Kc8 Bd7+ 5. Kxd7 (5. Kd8 $2 Qh4+ 6. Ne7 Qh8+ 7.
Kxd7 Qxb2 $11) 5... Qd1+ 6. Rd2 $1 (6. Kc7 $2 Qd7+ 7. Kxd7 {stalemate.}) 6...
Qxd2+ 7. Kc8 $22 {Domination and zz. White hasn't created any threat but d2 is
the only safe square for the queen.} Qd6 (7... Qe3 8. Bd3+ $1 Kb6 9. b8=Q+ Kxc6
10. Be4+ $1 Kc5 (10... Qxe4 11. Qb7+) 11. Qa7+) (7... Qg5 8. Bd3+ Kb6 9. b8=Q+
Kxc6 10. Qc7+ Kd5 11. Qa5+) (7... Qh6 8. Bd3+ Kb6 9. b8=Q+ Kxc6 10. Qb5+ Kd6
11. Qb6+) (7... Qc3 8. Bd3+ Kb6 9. b8=Q+ Kxc6 10. Qc7+) 8. Bd3+ $1 Kb6 (8...
Qxd3 9. Nb4+) 9. b8=Q+ Kxc6 {Black saved his Queen but not King.} 10. Qb5# {
Mutual annihilations of pieces. Domination with multiple Q-skewers.} 1-0

[Event "A.Selivanov-50 JT, 2 prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "6. Didukh S."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "7R/4r2P/8/6P1/6K1/1pp5/4P1p1/6Nk w - - 0 1"]
[PlyCount "23"]
[EventDate "2017.??.??"]

1. Rd8 $1 ({Logical try} 1. Ra8 $2 Rxh7 2. Ra1 Ra7 $1 3. Re1 Ra4+ $1 4. Kg3 Ra1
5. Rxa1 b2 6. Re1 b1=Q 7. Rxb1 c2 8. Re1 c1=Q 9. Rxc1 {stalemate.}) (1. g6 $2
Kxg1 2. Rf8 Re4+ 3. Kg3 Re3+ 4. Rf3 Rxf3+ 5. Kxf3 Kf1 $11) 1... Rxh7 2. Rd1 Rd7
$1 (2... c2 3. Re1 b2 4. Nf3+ g1=Q+ 5. Rxg1#) 3. Re1 Rd4+ $1 4. Kg3 $1 ({
Logical try} 4. Kh3 $2 Rd1 $1 5. Rxd1 c2 6. Re1 c1=Q 7. Rxc1 b2 8. Rd1 b1=Q 9.
Rxb1 {stalemate.}) (4. e4 $2 Rxe4+ 5. Rxe4 Kxg1 6. Kg3 Kf1 $19) (4. Kh5 $2 Kh2
$1 5. Nf3+ Kg3 6. Nxd4 Kf2 7. Nf3 c2 8. g6 b2 9. g7 c1=Q 10. g8=Q b1=Q $11)
4... Rd1 5. Rxd1 c2 6. Re1 c1=Q 7. Rxc1 b2 8. Rd1 $1 {
(now d1 is not attacked by pawn)} b1=Q 9. Nh3+ $1 {
(that's why King didn't go to h3)} Qxd1 10. Nf2+ Kg1 11. Nxd1 Kf1 12. Ne3+ {
The final combination is prepared by the right first R-move foreseeing Black's
counterplay for stalemate.} 1-0

[Event "EG 2016-2017, 2nd prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "2. Djurasevic B."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "2qk4/bp3BP1/P7/K1P5/5N2/3n4/1p6/8 w - - 0 1"]
[PlyCount "21"]
[EventDate "2017.??.??"]

1. g8=Q+ Kc7 2. Nd5+ Kb8 3. Qg3+ Nf4 $1 {play for stalemate} ({main} 3... Ka8
4. Nc7+ Qxc7+ 5. Qxc7 b1=Q 6. axb7+ (6. Qd8+ $2 Bb8 7. axb7+ Ka7 $1 $11) 6...
Qxb7 7. Qd8+ Bb8 8. Bd5 Nxc5 9. Qg8 $1 (9. Qg5 $4 Bc7#) (9. Bxb7+ $4 Nxb7+ $19)
9... Nb3+ 10. Ka4 Nc5+ 11. Ka3 $18) 4. Qxf4+ Ka8 5. Nc7+ (5. axb7+ $2 Kxb7 6.
Qb4+ Ka8 7. Nb6+ Bxb6+ 8. Qxb6 Qxc5+ $1 9. Qxc5 b1=Q $11) 5... Qxc7+ 6. Qxc7
b1=Q 7. axb7+ (7. Qd8+ $2 Bb8 8. axb7+ Ka7 $11) 7... Qxb7 8. Qd8+ Bb8 9. Bd5
Ka7 $1 10. Qb6+ $1 (10. Bxb7 $2 Bc7+ $1 11. Qxc7 $11 {
stalemate (idea by Maurice Ashley)}) 10... Qxb6+ 11. cxb6# {Judge (M. Minski)
comments: Ideal mate with block on b8. Author has managed to improve a nice
stalemate idea by Maurice Ashley (see "Game Studies" by Siegfried Hornecker,
EG iv2017). In the first main line, Black sacrifices the knight in order to
realize this stalemate. Thanks to the added white pawn, White forces an ideal
mate with block on b8. In the second main line, the bS plays an active role,
but White can find better places for Q and K.} 1-0

[Event "FIDE Olympic ty, 3rd prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Gonzalez L.M."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "7k/3B4/q5Pp/7N/3K4/8/2R5/r7 w - - 0 1"]
[PlyCount "27"]
[EventDate "2016.??.??"]

1. g7+ $1 (1. Rc8+ $2 Qxc8 2. g7+ Kh7 $1 3. Bxc8 Rf1 $1 ({but not} 3... Rg1 $2
4. Bf5+ Kg8 5. Be6+ Kh7 6. g8=Q+ Rxg8 7. Nf6+ Kg7 8. Nxg8 $18) 4. Bb7 $1 Rf7 $1
5. Be4+ Kg8 6. Bd5 Kh7 7. Bxf7 {stalemate}) 1... Kh7 2. Bf5+ Kg8 3. Rc8+ Qxc8
4. Bxc8 Rd1+ $1 5. Ke5 $1 (5. Ke4 $2 Re1+ 6. Kd5 Kf7 $1 $11) 5... Re1+ 6. Kf6
$1 (6. Kd6 $2 Kf7 $1 7. Bb7 Re6+ $1 ({but not} 7... Re8 $2 8. Bc6 $1 Rd8+ 9.
Kc7 Rd1 10. Be8+ $1 Kg8 11. Bd7 Rg1 12. Be6+ Kh7 13. g8=Q+ Rxg8 14. Nf6+ $18)
8. Kc5 Re8 9. Bc6 Rd8 $1 10. Bd5+ Kg6 11. Nf4+ Kh7 $1 12. Be4+ Kg8 13. Nh5 Kf7
$1 14. Bd5+ Kg6 $11 {positional draw}) 6... Rf1+ 7. Bf5 $1 (7. Kg6 $2 Rg1+ 8.
Kxh6 Rg6+ $1 9. Kxg6 {stalemate}) 7... Rf2 $1 8. Ke5 $1 Re2+ 9. Be4 $1 (9. Kd6
$2 Kf7 $1 $11) 9... Kf7 $1 10. Kd4 $1 (10. Kf4 $2 Rd2 $1 11. Bg6+ Kg8 12. Bf5
Rf2+ 13. Ke5 {loss of time}) 10... Rd2+ 11. Bd3 $1 (11. Kc5 $2 Rd8 $1 $11)
11... Rd1 12. Kc3 $1 Rc1+ 13. Bc2 $1 Rg1 14. Bb3+ {Judge Martin Minski:
"Amazing systematic movement. Compare with Dobrescu (HHdbV#36369) and Krug &
Garcia (HHdbV#01318), but this is not the same pattern"} 1-0

[Event "4th UAPA, 2 Prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Jasik A."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "1B3k2/3P4/3r3P/5K2/3P4/qbP5/3Q4/8 w - - 0 1"]
[PlyCount "29"]
[EventDate "2016.??.??"]

1. h7 $1 (1. Bxd6+ $2 Qxd6 2. Qf4 Qxd7+ 3. Kg5+ Bf7 4. Qb8+ Be8 5. Qe5 Kg8 $11)
1... Qa5+ 2. d5 $3 Rxd5+ 3. Be5 $1 (3. Kf4 $2 Kg7 $11) 3... Rxe5+ 4. Kf4 $1
Rf5+ (4... Kg7 5. d8=Q $16) 5. Kg4 Bd1+ $1 6. Qxd1 Rg5+ 7. Kh4 Qd8 $1 8. Qd6+ (
8. h8=Q+ $2 Rg8+ 9. Kh3 Rxh8+ $17) 8... Kf7 (8... Kg7 9. h8=Q+ $1 Kxh8 10. Qh6+
Kg8 11. Qxg5+ $16) 9. h8=N+ $1 Kg7 10. Qh6+ $1 Kxh6 11. Nf7+ Kh7 (11... Kg6 12.
Nxd8 Rd5 13. Nc6 $1 (13. Ne6 $2 Kf5 $1 14. d8=Q Rxd8 15. Nxd8 Ke4 $11) 13...
Kf5 ({HH} 13... Rxd7 14. Ne5+ {echo}) 14. Ne7+ Ke6 15. Nxd5 {win}) 12. Nxd8 Rd5
13. Ne6 $1 Rxd7 14. Nf8+ Kg7 15. Nxd7 {win} 1-0

[Event "5th UAPA, 1 Prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "3. Jasik A."]
[Black "WCCI 8"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/1p1p3P/8/2Q5/1K1n2pP/3kpq2/p4pp1/3N4 w - - 0 1"]
[PlyCount "27"]
[EventDate "2017.??.??"]

1. Nb2+ $1 (1. h8=Q $2 a1=Q $17) (1. Qc4+ $2 Kd2 2. Qxd4+ Ke1 3. h8=Q Qxd1 4.
Qxe3+ Kf1 $17) 1... Ke4 (1... Ke2 $2 2. Qc4+ Ke1 3. Qc1+ Ke2 4. Qd1#) 2. h8=Q
$1 ({Thematic try:} 2. Qxd4+ $2 Kxd4 3. h8=Q+ Qf6 $3 4. Qxf6+ Ke4 5. Na4 f1=Q
6. Nc5+ Kd5 7. Qg5+ Kc6 $1 8. Qg6+ Kc7 {Black wins}) 2... Nc6+ 3. Qxc6+ $3 bxc6
4. Qe8+ Kf4 5. Qb8+ Ke4 6. Qe8+ Kd4 7. Qh8+ Kd5 8. Qh5+ Ke4 9. Qe8+ Kd4 10.
Qh8+ Qf6 11. Qxf6+ Ke4 12. Na4 $1 (12. Qg6+ $2 Kf3 13. Qf5+ Kg3 14. Qe5+ Kh3
$17) 12... f1=Q (12... a1=Q 13. Nc5+ Kd5 14. Qf5+ Kd6 15. Qd3+ $11) 13. Nc5+
Kd5 14. Qg5+ {draw no 14...Kc6} 1/2-1/2

[Event "Olympic ty, 2nd prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Kopylov E."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "1r4N1/N3P1P1/4kPp1/8/R6P/5KP1/3qP2b/8 w - - 0 1"]
[PlyCount "19"]
[EventDate "2016.??.??"]

1. Re4+ (1. e8=Q+ $2 Rxe8 2. Re4+ Kf7 3. Re7+ Rxe7 4. Nxe7 Qc3+ $11) 1... Kf7
$1 (1... Kd5 2. e8=Q Rxe8 3. Rxe8 $18) (1... Kd7 2. f7 Rb3+ 3. Kg2 $18) 2. Nh6+
$1 (2. Nc6 $2 Qc3+ 3. e3 Rxg8 $19) (2. e8=Q+ $2 Rxe8 3. Re7+ Rxe7 4. Nxe7 Qc3+
$11) 2... Qxh6 (2... Kxf6 3. g8=Q $18) 3. Nc6 $1 (3. e8=Q+ $2 Rxe8 4. Rxe8 Qh5+
5. Kg2 Qd5+ 6. Kxh2 Kxe8 $11) 3... Qh5+ (3... Re8 4. Ne5+ Kxf6 5. g8=N+ Rxg8 6.
Ng4+ $18) 4. g4 (4. Kg2 $2 Re8 $19) 4... Qxh4 (4... Qd5 5. Nxb8 $18) 5. Nd8+
Rxd8 (5... Kxf6 6. e8=N+ $1 $18) 6. exd8=N+ $1 (6. exd8=Q $4 Qg3#) 6... Kxf6 (
6... Kg8 7. Re8+ $18) 7. g5+ $1 Qxg5 8. g8=N+ $1 (8. g8=Q $4 Qg3#) 8... Kf5 (
8... Kg7 9. Ne6+ $18) 9. Re5+ $3 (9. Ne7+ $2 Kf6 10. Re6+ Kg7 11. Rxg6+ Qxg6
12. Nxg6 Kxg6 $11) 9... Bxe5 (9... Kxe5 10. Nf7+ Kf5 11. e4+ $18) 10. e4# $1 {
Two Phoenix, ideal mate} 1-0

[Event "UAPA-4, 4th prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "2. Krug P."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "5k2/1K2N1N1/8/P2B3R/8/8/3p1q2/r7 w - - 0 1"]
[PlyCount "17"]
[EventDate "2016.??.??"]

1. Ngf5 $1 ({Try} 1. Nef5 $2 Qa7+ 2. Kxa7 Rxa5+ 3. Kb7 Rxd5 4. Ne6+ Kf7 $1 $11)
1... Qa7+ $1 (1... Rb1+ 2. Ka8 Ke8 3. Rh8+ Kd7 4. Rh7 Qe2 5. Nc6+ Ke8 6. Nd6+
Kf8 7. Rf7+ $18) 2. Kxa7 Rxa5+ 3. Kb7 $3 ({Thematic try :} 3. Kb6 Rxd5 4. Ng6+
Kf7 5. Nh6+ Ke8 6. Rxd5 d1=Q 7. Re5+ Kd7 $1 8. Nf8+ Kc8 $1 $11) 3... Rxd5 (3...
Rb5+ 4. Kc6 Rxd5 5. Ng6+ Kf7 6. Nh6+ Ke8 7. Rxd5 d1=Q 8. Re5+ $18 {
leads to matt}) 4. Ng6+ Kf7 5. Nh6+ Ke8 6. Rxd5 d1=Q 7. Re5+ $1 (7. Rxd1 $2 {
- stalemate}) 7... Kd7 8. Nf8+ Kd8 (8... Kd6 9. Nf7#) 9. Nf7# {Faced with a
failure in a thematic try, whites in the decision win by the right move 3.
Kb7!! At the same time playing a Rook and two white Knights make a very solid
impression. Well-balanced and well-designed study.} 1-0

[Event "WCCT-10, 1st place"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Minski M."]
[Black "WCCI 9.75"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "1r6/8/7k/1N6/KR2R3/p4n1p/4p3/8 w - - 0 1"]
[PlyCount "17"]
[EventDate "2016.??.??"]

{"Interesting variations." (FIN) "Splendid. Multiple thematic tries, with the
play in each differentiated from the others by clever tactics; multiple echoes
too. This is a fine study in any context, but in this particular theme
tournament it is outstanding, displaying the theme to maximum advantage. Rook
studies tend to have difficult, if not obscure, supporting variations that are
not to everyone's taste. However, one cannot but be impressed by the variety
of play following the three moves of the black Kh6 in reply to 1 Re6+." (GBR)
"The basic known matrix has been elaborated with multiple 'thematic' tries.
The important and interesting one shows knight annihilation by white to open a
line for his rook." (ISR) "In total 6 positions A/B with minor differences.
White has two main defences against the promotion of the h-pawn: either by
playing Rb8 threatening Rh8+, which only works if the BK is on the h-file (A5/
B5), but not too close to the 8th line (A1/B1) and if there is no WS on b5 (A3/
B3). The other defence is playing Rxg1+ followed by a knight fork. This only
works if BK is at g5 (A2/B2 and A4/B4). As a bonus there are positions A6/B6
where White only draws the rook ending if the BK now is as far of fas possible.
All this is accomplished by subtle checks (1.Re6+, 1... Kh7 2.Re7+), and a
surprising sacrifice (3.Sa7!) in the 1...Kh5 main line, which turns out to be
the thematic try in the 1...Kg5 main line. It takes some time to comprehend
the study, but all lines are crystal clear. A thematic masterpiece." (NED).} 1.
Re6+ $1 ({Thematic try:} 1. Rxe2 $2 Ra8+ ({or} 1... a2 2. Rxa2 Ra8+) 2. Na7 (2.
Kb3 a2 3. Rxa2 Rxa2 4. Kxa2 h2 5. Rb1 Ng1 6. Nd4 h1=Q $19 {position B2}) 2...
Rxa7+ 3. Kb3 a2 4. Rxa2 Rxa2 5. Kxa2 h2 6. Rb1 Ng1 {position B1} 7. Rb8 Kg7 (
7... Kh7) 8. Rb7+ Kg6 9. Rb6+ Kg5 10. Rb5+ Kg4 11. Rb4+ Kg3 12. Rb3+ Kf2 13.
Rb2+ Ne2 14. Rb1 Nc3+ $19) 1... Kh5 ({main} 1... Kg5 2. Rxe2 Ra8+ 3. Kb3 $1 ({
Thematic try:} 3. Na7 $2 Rxa7+ 4. Kb3 a2 5. Rxa2 Rxa2 6. Kxa2 h2 7. Rb1 Ng1 $19
{position B5}) 3... a2 4. Rxa2 Rxa2 5. Kxa2 (5. Nd4 $2 Rf2 $1 $19) 5... h2 6.
Rb1 Ng1 7. Nd4 $1 h1=Q {position A2/A4} 8. Rxg1+ $1 Qxg1 9. Nf3+ $11) ({main} 
1... Kh7 2. Re7+ $1 ({Thematic try:} 2. Rxe2 $2 Ra8+ (2... a2) 3. Kb3 a2 4.
Rxa2 Rxa2 5. Nd4 Rf2 $1 6. Nxf3 Rxf3+ 7. Kc2 {position B6} Kg6 $19 (7... Kh6))
2... Kh8 3. Rxe2 Ra8+ 4. Kb3 a2 5. Rxa2 Rxa2 6. Nd4 $1 Rf2 (6... h2 7. Nxf3
h1=Q 8. Rh4+ Qxh4 9. Nxh4 $11) 7. Nxf3 Rxf3+ 8. Kc2 $1 $11 {position A6}) 2.
Rxe2 Ra8+ 3. Na7 $3 ({Thematic try:} 3. Kb3 $2 a2 4. Rxa2 Rxa2 5. Kxa2 h2 6.
Rb1 Ng1 {position B3} 7. Nd4 h1=Q $19 {position B4}) 3... Rxa7+ 4. Kb3 a2 5.
Rxa2 Rxa2 6. Kxa2 h2 7. Rb1 $1 (7. Rb8 $2 Kg4 $1 8. Rh8 Nh4 $19) 7... Ng1 {
A1/A3/A5} 8. Rb8 $1 Kg4 (8... Kg6 9. Rh8 $11) 9. Rg8+ (9. Rh8 $2 Nh3 $19)
1/2-1/2

[Event "The Problemist, 1st prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "2. Minski M."]
[Black "WCCI 8.25"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "q4k2/1b1P2N1/5P2/1n2n3/1N6/1R4K1/2R2B2/3r4 w - - 0 1"]
[PlyCount "31"]
[EventDate "2016.??.??"]

{Judge Oleg Pervakov: "An excellent combination study is crowned by a rather
new position of domination. Bravo, Martin!"} 1. Ra2 $1 (1. Ne6+ $2 Kf7 $1 (1...
Kg8 $2 2. Ra2 Qb8 3. Ba7 $1 Nxa7 4. Na6 Qa8 5. Nac7 Qb8 6. Na6 $11) 2. d8=Q
Rxd8 3. Nxd8+ Qxd8 $19) 1... Qb8 2. Ba7 $1 (2. Na6 $2 Bxa6 $19) 2... Nxa7 3.
Na6 Qa8 4. Nc7 (4. Ne6+ $2 Kf7 5. d8=Q Rxd8 6. Rxb7+ (6. Nxd8+ Qxd8 7. Rxb7+
Kxf6 $19) 6... Rd7 $19) 4... Qb8 5. Na6 Rg1+ 6. Rg2 $1 (6. Kh3 $2 Bg2+ $19) (6.
Kh2 $2 Nf3+ $19) (6. Kf2 $2 Nd3+ $1 7. Kxg1 Qg3+ $19) 6... Rxg2+ 7. Kh3 Rh2+ $1
8. Kg3 $1 Rh3+ $1 (8... Qd6 9. d8=Q+ Qxd8 10. Ne6+ Kg8 11. Nxd8 Rg2+ 12. Kh3
$11) (8... Nxd7+ 9. Nxb8 $11) 9. Kxh3 Bg2+ $1 10. Kxg2 Qa8+ 11. Kg1 $1 (11. Kh2
$2 Kf7 $1 12. Rb7 Kg6 $19) (11. Kf2 $2 Kf7 $1 12. Rb8 Qf3+ $1 $19) 11... Nxd7
12. Rb8+ $1 (12. Ne6+ $2 Kf7 $1 13. Rb8 Qd5 $1 14. Rf8+ Nxf8 $19) (12. Nc7 $2
Qc8 $1 $19) 12... Nxb8 13. Ne6+ Kg8 14. f7+ $1 (14. Nac7 $2 Qf3 $1 15. f7+ Qxf7
$19) 14... Kxf7 15. Nac7 {domination} Qb7 (15... Qc6 16. Nd8+) (15... Qe4 16.
Ng5+) (15... Qf3 16. Ng5+) 16. Nd8+ 1/2-1/2

[Event "Boris Oleynik-82 MT, 1st prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "3. Minski M."]
[Black "WCCI 10.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/7p/6P1/4n2k/2BK4/R7/6Q1/4q2r w - - 0 1"]
[PlyCount "15"]
[EventDate "2017.??.??"]

{Judge Sergiy Didukh: "Spectacular fight of heavy-weight boxers. White blocks
Black's starting attack by sacrificing his bishop, then he repels the second
wave of attack by a beautiful combination containing Q-sacrifice and
knocking-out promotion to knight. Boxers must be very smart to fight like
that!"} 1. g7 $1 (1. Be2+ $2 Kh6 2. Rh3+ (2. Kxe5 hxg6 3. Qf3 Qg1 4. Qf8+ Kh7
5. Qf7+ Kh6 6. Qf4+ Qg5+ 7. Qxg5+ Kxg5 $11) 2... Rxh3 3. Qxh3+ Kg7 4. Qxh7+ Kf6
5. Qh8+ Kxg6 6. Qh5+ Kg7 7. Qxe5+ Kh6 $11) (1. gxh7 $2 Qh4+ 2. Kxe5 Qe7+ 3. Kd5
Qd8+ 4. Kc5 Qf8+ 5. Kb5 Qb8+ 6. Kc5 Qf8+ 7. Kd4 Rh4+ 8. Kc3 Qxa3+ $11) (1. Rh3+
$2 Rxh3 2. Qxh3+ Kxg6 $11) 1... Rh4+ (1... Qh4+ 2. Kxe5 $11) 2. Kd5 Qd1+ $1 (
2... Ng6 3. Qe2+ Qxe2 4. Bxe2+ Kh6 5. Ra7 $18) 3. Bd3 $1 (3. Kxe5 $2 Qd4+ 4.
Ke6 Re4+ 5. Qxe4 Qxe4+) 3... Nxd3 {battery} 4. Ra5 $1 {counter battery} (4.
g8=Q $2 Ne5+ 5. Kxe5 Qd4+ 6. Ke6 Re4+ 7. Qxe4 Qxe4+ $11) 4... Ne5+ $1 {
switchback} (4... Nf4+ 5. Kc6+ $18) 5. Kxe5 Qe1+ {switchback} 6. Qe2+ $3 (6.
Kf6+ $2 Qxa5 7. Qf3+ Rg4 8. g8=Q Qa1+ 9. Ke7 Qa7+ $11) 6... Qxe2+ 7. Kf6+ Kh6 (
7... Kg4 8. g8=Q+ $18) 8. g8=N# $1 1-0

[Event "Olympic ty, 2nd prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "4. Minski M."]
[Black "WCCI 11.25"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "4Q3/4p2P/2p5/2P1B3/2PKb3/2P2q2/4k3/8 w - - 0 1"]
[PlyCount "14"]
[EventDate "2018.??.??"]

{Judge David Gurgenidze: "German chess composer has once again crafted
immaculate study with masterful design."} 1. Qh5 $1 (1. Bh2 $2 Qe3+) (1. Bf4 $2
Qxf4 $19) 1... Qxh5 2. h8=Q Bh7 $1 (2... Qg4 3. Qh2+ Bg2+ 4. Qf4 Qd7+ 5. Bd6
exd6 6. Qe3+ $11) 3. Bf4 Kf2 $1 (3... Kf3 {/Kd1} 4. Qe5 $11) 4. Qf8 $1 {battery
} (4. Qe5 $2 Qd1+ 5. Bd2 Qxd2# {mate with self-block on e5}) (4. Qf6 $4 exf6
$19 {no stalemate}) 4... Qg4 5. Qf6 $3 (5. Ke5 $2 Qe2+ 6. Be3+ Kxe3 $19) 5...
Kf1 $1 (5... Bb1 6. Qg5 Qd1+ 7. Bd2 $11) 6. Qf8 $1 ({logical try} 6. Qf7 $2 Bg6
$1 7. Qf8 Kf2 $1 8. Qf6 $1 Qd1+ $1 9. Bd2+ Ke2 $1 10. Qxe7+ (10. Qxg6 Qxd2+ 11.
Ke5 Qe3+ 12. Qe4 Qxe4+ 13. Kxe4 Kd2 14. Kd4 Kc2 $19) 10... Kxd2 $19 {
position X with bBg6}) 6... Kf2 (6... Bb1 7. Ke5 Qe2+ 8. Be3+ $11) (6... Kg2 7.
Qh6 $1 Qd7+ 8. Bd6 $1 e5+ $1 9. Ke3 $1 $11) 7. Qf6 $1 (7. Qh6 $2 Qd7+ 8. Bd6
e5+ $1 9. Kxe5 Qf5+ 10. Kd4 Qe4#) 7... exf6 {first ideal pin stalemate} ({main
} 7... Qd7+ 8. Bd6+ exf6 {second ideal pin stalemate}) ({main} 7... Qd1+ 8.
Bd2+ exf6 {third ideal pin stalemate} (8... Ke2 9. Qxe7+ Kxd2 {
position X with bBh7} 10. Qxh7 Qg1+ 11. Ke5 Qxc5+ 12. Ke6 $11)) 1/2-1/2

[Event "StrateGems, 1st prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "5. Minski M."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "K6k/P3p1p1/4R1P1/1r1r2PB/2b3P1/1P6/8/4Q3 w - - 0 1"]
[PlyCount "17"]
[EventDate "2016.??.??"]

{Judge Peter Gyarmati: "A beautiful key setting is achieved after the seventh
move when Black is in Zugzwang -- the main line (the roles are reversed in the
try). All moves show tactical motifs. The author built his work superbly, the
highlight of the study comes at the end: a minor piece promotion."} 1. Rb6 $1
Rxb6 (1... Rd8+ 2. Kb7 Rd7+ 3. Kc8 $18) 2. Qxe7 Re5 $1 (2... Rd7 3. Qxd7 Bg8 4.
Qb7 $1 Rxb3 5. Qb8 $18 {zz see mainline}) 3. Qd8+ $1 ({logical try:} 3. Qxe5 $2
Bg8 $1 {zugzwang for White} 4. Qb8 Rxb3 {zz} 5. Qxb3 Bxb3 6. Kb8 Bd5 $11) 3...
Re8 $1 (3... Bg8 4. Qxb6 $18) 4. Qxe8+ Bg8 5. Qe5 $1 {zugzwang for Black} (5.
Qb8 $2 Rxb3 $11 {zz}) (5. Qd8 $2 Rb8+ $1 6. axb8=Q {stalemate}) 5... Rb4 $1 (
5... Rxb3 6. Qb8 $18 {zz}) 6. Qd6 $1 (6. Qb8 $2 Rxb3 $11 {zz}) 6... Rxb3 (6...
Rb5 7. b4 $1 Bd5+ 8. Qxd5 $18) 7. Qb8 $1 {zz} Rxb8+ (7... Ra3 8. Kb7 Rxa7+ 9.
Qxa7 $18 (9. Kxa7 $2 {stalemate})) 8. axb8=N $1 (8. axb8=Q $2 {stalemate}) (8.
Kxb8 $2 Bd5 $11) 8... Bd5+ 9. Ka7 $18 1-0

[Event "Chess Informant-50 AT, 2nd prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "6. Minski M."]
[Black "WCCI 9.75"]
[Result "1-0"]
[SetUp "1"]
[FEN "2B5/6k1/b3K3/5PP1/5P2/1Q6/4p1P1/7q w - - 0 1"]
[PlyCount "29"]
[EventDate "2016.??.??"]

{Judge Yochanan Afek: "In the heat of the battle each side promotes a second
queen; however the side that sacrifices both his queens is the one to emerge
the eventual winner against the remaining enemy queen. A breathtaking battle
with plenty of quiet moves and subtle finesses."} 1. f6+ (1. Qc3+ $2 Kg8 2. Kd6
e1=Q 3. Be6+ Qxe6+ 4. Kxe6 (4. fxe6 Qxg2 $11) 4... Qxg2 5. Qc7 Qa8 6. Qf7+ Kh8
$11) 1... Kh8 2. g6 $1 e1=Q+ (2... Bc4+ $1 3. Qxc4 e1=Q+ 4. Kf7 $18 {
see mainline}) 3. Kf7 Bc4+ $1 (3... Qh5 4. Qb8 $18) 4. Qxc4 Qe8+ $1 (4... Qh5
5. Be6 $1 $18) 5. Kxe8 Qe1+ 6. Qe2 $3 (6. Qe6 $2 Qxe6+ $1 7. Bxe6 {stalemate})
(6. Be6 $2 Qxe6+ $1 7. Qxe6 {stalemate}) (6. Kf7 $2 Qe8+ {/Qe7+!} 7. Kxe8 {
stalemate}) 6... Qxe2+ 7. Kf8 Qxg2 8. g7+ Kh7 9. Bb7 $1 (9. Bf5+ $2 Kh6 10.
g8=Q Qa8+ 11. Ke7 $1 Qa3+ $1 $11 (11... Qxg8 $2 12. f7 $18)) (9. Be6 $2 Qa8+
$11) 9... Qg1 (9... Qg6 10. Be4 $1 Qxe4 11. g8=Q+ $18) (9... Qxb7 10. g8=Q+ $18
) (9... Qg4 10. Be4+ Kh6 11. g8=Q Qc8+ 12. Ke7 $1 $18 {see mainline}) 10. Be4+
Kh6 11. g8=Q Qc5+ 12. Ke8 (12. Kf7 $2 Qc4+ $1 13. Ke7 Qxe4+ $11 (13... Qxg8 $2
14. f7 $18)) 12... Qc8+ 13. Ke7 $3 (13. Kf7 $2 Qd7+ {/Qc4+=}) 13... Qxg8 (13...
Qc7+ 14. Ke6 Qc4+ (14... Qf7+ 15. Kxf7 $18 (15. Qxf7 $2 {stalemate})) 15. Bd5
$18) 14. f7 Qg7 15. Ke8 $18 1-0

[Event "L.Lepky-130, 1st prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "1. Nielsen S."]
[Black "WCCI 10.5"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "q5b1/8/3p4/2QP4/pN2P3/2p5/B3p3/1K3k2 w - - 0 1"]
[PlyCount "26"]
[EventDate "2018.??.??"]

{White is on the defensive, his biggest worry being the pawn on e2. It is not
yet time for active counterplay.} 1. Qb5 $1 (1. Qc4 $2 {
loses after 1...Bh7 or 1...Qe8. That square is needed for the bishop.}) 1...
Qe8 $1 {White is not given time for 2. Bc4} (1... Bh7 2. Bc4 $11) (1... Qa7 2.
Bc4 $11) 2. Qd3 {Necessary retreat, the first of many.} (2. Qxe8 $2 e1=Q+ 3.
Kc2 Qd2+ $19) 2... Qxe4 $1 {There is no rest for White.} (2... Kf2 3. Qd4+ $11)
3. Qxe4 Bh7 {The point. White must retreat, keeping an eye on the pawn.} 4. Qd3
(4. Qxh7 $2 e1=Q+ 5. Kc2 Qd2+ {we know already}) 4... Kf2 {
Unpinning the pawn. White must take one further step into his cave.} (4...
Bxd3+ 5. Nxd3 $18) (4... Kg1 5. Kc1 e1=Q+ 6. Qd1 $11) 5. Qc2 Ke3 {
Now the promotion cannot be stopped. Time to go on the offensive for White?} (
5... Bxc2+ $4 6. Nxc2 (6. Kxc2)) 6. Ka1 $1 {Well, not exactly.} (6. Kc1 $2
e1=Q+ 7. Qd1 Qd2+ (7... Qf2)) (6. Qxh7) 6... e1=Q+ 7. Bb1 {
Luckily for White c2 is still immune.} Qd2 $1 8. Qa2 $1 {Perhaps not the
active counterplay White had been hoping for. But the only way to cover b2.} (
8. Qxd2+ cxd2 {leaves no hope}) (8. Qxh7 Qb2#) 8... Qc1 {
fighting for the c2 square.} 9. Nc2+ $1 {A check! White gets to give a check!
Simultaneously burying Bb1 and Qa2 even further.} Kd2 $1 {When White now saves
his knight, Black will play c3-c2 and have a win after the general exchange.
And it is not like White has any counterplay, is it?} 10. Nd4+ {
Time to break out!} (10. Qa3 $2 Bxc2 $19) 10... c2 11. Nb3+ {
Not too late to go wrong. After the fancy} (11. Qxc2+ $5 Bxc2 12. Nb3+ {
Black wins with} Kd1 (12... axb3 $11) (12... Bxb3 $11) 13. Nxc1 Kxc1 14. Ba2
Kd2 15. Kb2 (15. Bc4 Bd3) 15... Kd3 16. Ka3 Kc3 {and White is in zugzwang.}) (
11. Nxc2 $2 Bxc2 12. Qxc2+ Qxc2 13. Bxc2 Kxc2 $19) 11... axb3 (11... Kc3 12.
Nxc1 $11) 12. Qa5+ Kd1 13. Qe1+ Kxe1 1/2-1/2

[Event "Schach"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Nielsen S."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "3bK3/4p1kN/6P1/2p5/5R1R/2n5/8/3q4 w - - 0 1"]
[PlyCount "25"]
[EventDate "2018.??.??"]

1. Nf8 {White must keep the pawn on g6 to create threats.} Nd5 (1... Nb5 2.
Rh7+ Kg8 3. Rh8+ Kxh8 4. Ne6 {with a deadly double threat.}) (1... Qd6 {
Now White has a long forcing win:} 2. Rf7+ Kg8 3. g7 Qc6+ 4. Nd7 Qxd7+ 5. Kxd7
Kxf7 6. Rg4 Kg8 7. Kxd8 e5 8. Ke7 e4 9. Kf6 e3 10. Kg6 e2 11. Rf4 {
and mate on the next move.} (11. Rh4)) (1... Ne4 2. Ne6+ (2. Rxe4) 2... Kxg6 3.
Rxe4 Ba5 4. Kxe7) 2. Rh7+ Kg8 3. Rh8+ $1 Kxh8 (3... Kg7 4. Ne6+ Kxg6 (4... Kxh8
5. Rf8#) 5. Rg8+ Kh7 6. Rg7+ Kh6 7. Rh4+ $18) 4. Kf7 {Threat 5. g7#} Qh5 5. Rh4
{Counterpin} Nf6 {The charged key position. White has to find the right plan.
He wants to play Nf8-d7 at the correct time. Now is too early, as Black
responds 6... Nd7 Qxh4 7. g7+ Kh7 8. Nxf6 Qxf6+.} (5... Nf4 6. Ne6 Ba5 7. Nxf4
Qxh4 8. g7+ Kh7 9. g8=Q+ Kh6 10. Qg6# (10. Qg7#)) 6. Rh1 $3 {
Threatening 7. Nd7 Qxh1 8. g7+ Kh7 9. Nxf6+ Kh6 10. g8=Q and mate.} ({After} 6.
Rh2 $2 {, threatening 7. Nd7 Qxh2 8. g7+ Kh7 9. Nxf6+ Kh6 10. Ng4+ winning,
Black defends with a surprising manoeuvre:} Bc7 7. Rh1 Bf4 8. Nd7 Bh6 {!}) (6.
Rh3 {? No threat. Black defends by} Bc7 (6... Bb6) (6... Ba5)) 6... e6 $3 {
A subtle defense, opening the line b7-f7 (but closing b3-f7)} (6... e5 7. Rh2 {
with a quicker white win.}) 7. Rh3 {White now threatens 8. Nd7 Qxh3 9. g7+ Kh7
10. Nxf6+ Kh6 11. g8=Q, as Black has no check on b3.} (7. Nd7 $2 Qxh1 8. g7+
Kh7 9. Nxf6+ Kh6 10. g8=Q Qb7+ {! was the point of Black's 6...e6!!}) 7... e5 {
Opening the line b3-f7 (but closing c7-h2)} 8. Rh2 $1 (8. Nd7 {?} Qxh3 9. g7+
Kh7 10. Nxf6+ Kh6 11. g8=Q Qb3+) 8... e4 (8... Bc7 9. Nd7 e4 {transfers}) (8...
Ba5 9. Nd7 Qxh2 10. g7+ Kh7 11. Nxf6+ Kh6 12. Ng4+ $1 (12. g8=Q $4 Qa2+)) 9.
Nd7 Bc7 10. Rh1 {
! Now this is (again) the right square, as Black will not have Qb7+.} (10. Rh3
{?} Qxh3 11. g7+ Kh7 12. Nxf6+ Kh6 13. g8=Q Qb3+) (10. Nxf6 $2 Bxh2 11. Nxh5
Be5 $11) 10... Qxh1 11. g7+ Kh7 12. Nxf6+ Kh6 13. g8=Q {
+- There is no defence against mate on g6 or g7.} 1-0

[Event "Shakhmatnaya Kompositzia, 1st prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "3. Nielsen S."]
[Black "WCCI 9.75"]
[Result "1-0"]
[SetUp "1"]
[FEN "6k1/P2KR3/2rbp1PR/3q4/6p1/4P3/2B5/8 w - - 0 1"]
[PlyCount "47"]
[EventDate "2016.??.??"]

{Initially, all action is on the 8th rank. 9 out of the first 10 half moves
are made there.} 1. Rh8+ (1. a8=Q+ {?} Bb8+ 2. Ke8 Rc8# {
White must free f7 for his king.}) 1... Kxh8 2. a8=Q+ Bb8+ 3. Ke8 Rc8+ (3... e5
4. g7+ Kg8 5. Qb7) 4. Kf7 Rf8+ (4... Qxa8 5. g7#) 5. Kxf8 Qd8+ 6. Kf7 (6. Re8
$2 Qf6#) 6... Qg8+ 7. Kf6 Be5+ (7... Qf8+ 8. Kxe6) 8. Kxe5 Qxa8 {The Merry-Go-R
ound comes to a standstill. Time for a breath. White's advanced pawn gives him
chances.} 9. g7+ Kg8 10. Kf6 {
White now has various plans, for instance 11. Rf7 followed by 12. Rf8+ winning.
} Qf3+ (10... g3 11. Be4 {!} Qd8 (11... Qb8) 12. Bg6 g2 (12... Qxe7+ 13. Kxe7
g2 14. Kf6 g1=Q 15. Bf7+ Kh7 16. g8=Q+ Qxg8 17. Bxg8+ $18) 13. Bf7+ Kh7 14.
g8=Q+ Qxg8 15. Bxg8+ Kxg8 16. Rg7+) (10... Qc6 11. Be4 $1 (11. Bb1 $2 Qb5 $1
12. Be4 Qh5) 11... Qxe4 12. Re8+ $18) 11. Kg6 Qc6 (11... Qa8) 12. Bb1 $1 {
12. Be4 is not possible as Black takes with check. This was the point of 10...
Qf3+.} (12. Bd3 $2 e5+ $11 {White has no check on the a2-g8 diagonal.} 13. Kg5)
(12. Kh6 $2 Qh1+) 12... g3 (12... e5+ 13. Kg5 Qa6 14. Bf5 ({or} 14. Bc2 Qb6 15.
Bf5) 14... g3 15. Be6+ Qxe6 16. Rxe6 g2 17. Kf6 g1=Q 18. Re8+ $18) (12... Qb5 {
is now ineffective as White controls h5. White wins by for instance} 13. Kh6)
13. Rf7 $1 {Walking into the pin.} (13. Kh6) 13... Qe8 (13... e5+ 14. Rf6 $18)
14. Kh6 $1 {And abandoning the rook.} g2 (14... Qxf7 15. Bh7#) (14... Kxf7 15.
Bg6+ Kg8 16. Bxe8 g2 17. Bd7 (17. Bg6)) 15. Rf6 $1 {
A precise choice of squares, foreseeing the sacrifices on h7 and g8.} (15. Rf3
$2 Qh5+) (15. Rf4 $2 Qh5+) (15. Rf2 $2 Qh5+) (15. Re7 $2 Qh5+) (15. Rd7 $2 Qh5+
) (15. Rc7 $2 Qh5+) (15. Rb7 $2 Qh5+) (15. Ra7 $2 Qh5+) 15... Qh5+ (15... g1=Q
16. Bh7#) 16. Kxh5 g1=Q {
Finally everything becomes clear. Black is about to give that perpetual.. .}
17. Bh7+ $1 Kxh7 18. g8=Q+ Qxg8 (18... Kxg8 19. Rg6+ Qxg6+ 20. Kxg6 $18) 19.
Rh6+ Kg7 20. Rg6+ Kf7 21. Rxg8 Kxg8 22. Kg6 Kf8 23. Kf6 (23. e4 $2 e5 $11)
23... Ke8 24. Kxe6 (24. e4 $4 e5 $11) 1-0

[Event "Chessstar 2018, 1st prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "4. Nielsen S."]
[Black "WCCI 11.25"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "1b1r4/2p5/4P2k/7p/4p3/4K1R1/Q7/2B2q2 w - - 0 1"]
[PlyCount "35"]
[EventDate "2018.??.??"]

{At first some precision. White needs to find the right square for the queen,
covering Bc1 as well as creating threats towards the black king.} 1. Qa1 $1 {
Now White is almost winning, but a non standard combination tips the scale in
Black's favour.} (1. Qc2 $2 Qe1+ 2. Kf4 c6+ $1 3. Kf5+ Kh7 4. Rg7+ Kxg7 5. Qb2+
Kg8 6. Kg6 Qg3+ 7. Bg5 Be5 8. Qb7 Bc7 9. Qb2 Rd7 10. exd7 Qd6+ 11. Kxh5 Qxd7
12. Qf6 Qf7+ 13. Qg6+ Qxg6+ 14. Kxg6 Bb6 $1 $19 {
and Black keeps both his pawns.}) (1. Qb2 $2 Qe1+ 2. Kf4 Rf8+ 3. Ke5+ e3 4.
Bxe3+ (4. Rxe3 Qa5+ 5. Kd4 Ba7+) 4... Kh7 5. Qc2+ Kh8 6. Rh3 c6+ 7. Ke4 Rf4+ 8.
Kd3 Qf1+ 9. Kd2 Qg2+ 10. Kd3 Qxh3 $19) (1. Qa3 $2 c5 2. Kxe4+ Kh7 3. Qxc5 Qe1+
4. Re3 Qh1+ 5. Rf3 Qh4+ 6. Rf4 Qe1+ 7. Qe3 Qb4+ 8. Kf3 Bxf4) 1... Qe1+ 2. Kf4
Rf8+ 3. Ke5+ e3 $1 (3... Kh7 4. Rg7+ Kxg7 5. Bh6+ Kxh6 6. Qxe1 $18 {
This variation shows why 1. Qa1! was better than 1. Qb2?}) 4. Bxe3+ (4. Rxe3 $2
c6+ 5. Ke4 Rf4+ (5... Qh1+) 6. Kd3 Qd1+) 4... Rf4 $3 5. Qb2 $1 (5. Kxf4 $2 Qxa1
6. e7 Qa4+ {and White gets no time for 7. Rg8.}) (5. Qxe1 $2 c6#) (5. Qa8 $2
Qa5+ (5... Qa1+) 6. Kxf4 Qxa8 7. e7 Qa4+) 5... Qc3+ 6. Kxf4 Qxb2 7. e7 {
Now, compared to 5. Kxf4?, Black has no winning check on a4.} (7. Kf5+ $2 $19
Kh7) 7... Qh8 8. Kf5+ ({Logical try} 8. Ke4+ $2 Kh7 9. Rg7+ Kxg7 (9... Qxg7 $2
10. e8=Q Qg6+ 11. Qxg6+ Kxg6 12. Bf4 $1 $11) 10. Bd4+ Kf7 11. Bxh8 c6 $1 {
and Black ends up with two extra pawns as White has not the possibility to
play the king the g5.}) 8... Kh7 9. Rg7+ $1 Kxg7 (9... Qxg7 10. e8=Q $11) 10.
Bd4+ Kf7 11. Bxh8 c5 (11... c6 12. Kg5 $11 ({or} 12. e8=Q+ Kxe8 13. Kg5 $11))
12. Bf6 (12. Kg5 $2 Kxe7 13. Kxh5 Ke6 14. Kg4 (14. Bc3 Be5 (14... Kf5)) 14...
Be5 $19) 12... Bd6 (12... Bg3 {eg} 13. Bg5) 13. Ke4 $1 Bxe7 {
In the end, White is saved by Black having the wrong bishop for the h1 square:}
14. Bd4 $1 cxd4 (14... c4 15. Kd5 h4 16. Kxc4 h3 17. Bg1 (17. Be5 $2 Ke6 18.
Bh2 Bd6 $19) 17... Ke6 (17... Kf6 18. Kd3 Kg5 (18... Bd6)) 18. Kd3 $11) 15.
Kxd4 h4 16. Ke3 $1 (16. Ke4 $2 h3 17. Kf3 Bh4 $19) 16... h3 17. Kf2 h2 18. Kg2
$11 1/2-1/2

[Event "WCCT-10, 6th place"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "5. Nielsen S."]
[Black "WCCI 9"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "k5q1/2b1P3/K4n2/3R1P2/P2n4/8/8/5Q2 w - - 0 1"]
[PlyCount "17"]
[EventDate "2016.??.??"]

1. Rd8+ (1. Rxd4 {?} Qc8+ 2. Kb5 Qb7+ 3. Kc4 Qa6+) 1... Bxd8 2. Qh1+ $1 {
Not all queen sacrifices has to be played} ({Thematic try} 2. Qg2+ {?} Nd5 {
A position of mutal zugzwang. White must create a disadvantageous block.} 3. a5
(3. Qxg8 Nb4#) (3. Qh1) (3. e8=Q Qxe8) (3. f6 Qe6#) (3. exd8=Q+ Qxd8) 3... Kb8
4. exd8=Q+ Qxd8 5. Qb2+ Kc7 6. Qxd4 Nb4+ 7. Qxb4 Qa8+ 8. Kb5 Qc6# {POSITION A})
2... Nd5 3. Qg2 $1 {But this queen sac is correct. We have the same zugzwang
position with Black to move.} Kb8 (3... Qxg2 4. exd8=Q#) (3... Bxe7 4. Qxg8+) (
3... Nb3 4. Qxg8) (3... Nc6 4. Qxg8) 4. exd8=Q+ Qxd8 5. Qb2+ Kc7 6. Qxd4 Nb4+
7. Qxb4 Qa8+ 8. Kb5 Qc6+ {POSITION B} 9. Ka5 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "6. Nielsen S."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/r7/3P1k2/1P6/bp6/3p4/2PP4/3BRK2 w - - 0 1"]
[PlyCount "21"]
[EventDate "2017.??.??"]

{At first, White wants to keep his material advantage.} 1. c4 {
Creating three dangerous passed pawns, forcing Black's answer.} (1. c3 $2 Bxd1
2. Rxd1 Ke6 3. Rb1 (3. cxb4 Ra2 4. Kf2 Rb2 5. Ke3 Rxb4 6. Rh1 Rxb5) 3... bxc3
4. dxc3 Kxd6 {= EGTB}) (1. cxd3 $2 Bxb5) 1... bxc3 (1... Bxd1 2. Rxd1 $18) 2.
b6 {Using the fact that the rook needs to cover the bishop.} ({After} 2. Bxa4 {
Black draws by exchanging everything:} cxd2 (2... Rxa4 $2 3. dxc3) 3. Re3 Rxa4
4. Rxd3 Ra1+ 5. Ke2 d1=Q+ 6. Rxd1 Rxd1 7. Kxd1 Ke6 $11) (2. dxc3 $2 d2) 2...
Rh7 $1 {Black must go on the offensive.} 3. b7 $1 ({Too slow is} 3. Bxa4 $2
Rh1+ 4. Kf2 Rxe1 {and a draw, as} 5. Kxe1 {loses to} c2) (3. d7 $2 {
with the same idea is met by} Bxd7) 3... cxd2 $1 {Threatening 4...Rh1+.} ({
After} 3... Rxb7 {White stabilizes like this:} 4. Bxa4 cxd2 5. Rd1 Rb4 6. Be8
$1 Rd4 7. d7 $18) 4. Re7 $1 (4. Re6+ {? Allows Black to slip away narrowly.}
Kxe6 5. Bg4+ Kd5 6. Bf3+ Kc4 7. b8=Q Rf7 8. Qc8+ Kb4 9. Qg4+ (9. Kg1 Rxf3 10.
Qg4+ Kc3 11. Qxf3 d1=Q+ {=}) 9... Kc3 10. Qxa4 (10. Kg2 Rxf3 11. Qxf3 d1=Q 12.
Qxd1 Bxd1 13. d7 d2) 10... Rxf3+ 11. Kg2 Rf7 (11... Rf4 {=})) (4. Re8 {?} Rxb7
$11) (4. b8=Q $4 Rh1+ $19) 4... Bxd1 (4... Rh1+ 5. Kf2 $18) (4... Rh8 5. Bxa4
$18) 5. b8=Q Bb3 $1 {
It appears that White's threats to the Black king is not so serious.} (5...
Be2+ 6. Kf2 d1=Q 7. Qf8+ (7. Qb2+)) 6. Qxb3 (6. Qf8+ Bf7 (6... Kg6 {=})) (6.
Rf7+ $5 Bxf7 7. Qb2+ Ke6 8. Qxd2 Bg6 {and Black holds the balance.}) 6... d1=Q+
7. Qxd1 Rh1+ 8. Kg2 $1 {A key move, anticipating a Black knight promotion.} ({
After the natural} 8. Kf2 $2 Rxd1 9. Re4 ({or} 9. Re5 d2 {with similar lines})
9... d2 10. Rd4 Ra1 (10... Rb1) (10... Rh1) 11. d7 d1=N+ $1 {=}) 8... Rxd1 9.
Re5 {! This move secures that the black king is one move too late to support
his pawn.} ({Try} 9. Re4 {?} d2 (9... Ra1 10. d7 Ra8 11. Re8) 10. Rd4 Ke5 $1
11. d7 Kxd4 12. d8=Q+ Kc3 {!= In the resulting position, White's queen is
unable to push the king off the pawn.}) ({Another natural move} 9. Re3 {
? is met by} Rd2+ 10. Kg3 Re2 $1 11. Rxd3 Re8 $11) (9. Re8 $2 d2 10. d7 Rg1+
$11) 9... Kxe5 (9... d2 10. Rd5 Rb1 11. d7 d1=Q 12. d8=Q+) (9... Rb1 10. d7 Rb8
11. Re8) (9... Rd2+ 10. Kf3 (10. Kg3) 10... Kxe5 11. d7 $18) 10. d7 Ke4 (10...
d2 11. d8=Q $18 {The pawn will quickly drop.}) 11. d8=Q $18 1-0

[Event "EG-50 AT, 2nd prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Ostmoe G.S.T."]
[Black "WCCI 9.5"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "BN5Q/2rP1P1b/7n/6p1/8/3p4/k4PPp/3n1K2 w - - 0 1"]
[PlyCount "41"]
[EventDate "2016.??.??"]

1. Bd5+ $1 ({Logical try:} 1. g4 $2 Ne3+ 2. fxe3 Rc1+ 3. Kf2 Nxg4+ 4. Kg3 Rg1+
5. Kh3 Be4 $1 6. Bxe4 h1=Q+ 7. Bxh1 Rxh1+ 8. Kxg4 Rxh8 9. Nc6 d2 10. d8=Q Rxd8
11. Nxd8 d1=Q+ 12. Kxg5 Qxd8+ 13. Kg6 {and because Black's king is on a2
instead of a1, Black wins by one tempo, for example} Kb3 14. e4 Kc4 15. e5 Qf8
$1 (15... Kd5 $2 16. Kg7 $1 Qg5+ 17. Kh7 Qf5+ 18. Kg7 {draws.}) 16. e6 Kd5 17.
e7 Qxe7 18. Kg7 Ke6 {wins.}) 1... Kb1 2. g4 Ne3+ 3. fxe3 Rc1+ 4. Kf2 Nxg4+ 5.
Kg3 Rg1+ 6. Kh3 Be4 $1 7. Qa1+ $1 ({Logical try:} 7. Bxe4 $2 h1=Q+ 8. Bxh1
Rxh1+ 9. Kxg4 Rxh8 10. Nc6 d2 11. d8=Q Rxd8 12. Nxd8 d1=Q+ 13. Kxg5 Qxd8+ 14.
Kg6 {and because Black's king is on b1 instead of a1, Black wins by one tempo:}
Kc2 ({or} 14... Qf8 {here or on the next move}) 15. e4 Kd3 16. e5 Qf8 $1 (16...
Ke4 $2 17. Kg7 $1 Qg5+ 18. Kh7 Qf5+ 19. Kg7 {draws.}) 17. e6 Ke4 18. e7 Qxe7
19. Kg7 Kf5 20. Kg8 Kg6 {wins.}) 7... Kxa1 8. Bxe4 h1=Q+ 9. Bxh1 Rxh1+ 10. Kxg4
Rh8 11. Nc6 d2 12. d8=Q Rxd8 13. Nxd8 d1=Q+ 14. Kxg5 Qxd8+ 15. Kg6 {and because
Black's king is on a1 instead of a2 or b1, White draws by one tempo:} Kb2 16.
e4 Kc3 17. e5 Qf8 18. e6 Kd4 19. e7 Qxe7 20. Kg7 Ke5 21. Kg8 {draws.} 1/2-1/2

[Event "Timman-65 JT, 1st prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "2. Ostmoe G.S.T."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "1N5r/1pP3N1/1k1pPn2/8/2p5/2Pp4/1Kp5/6R1 w - - 0 1"]
[PlyCount "25"]
[EventDate "2017.??.??"]

1. Nd7+ Nxd7 2. Ne8 $1 (2. e7 $2 Kxc7 3. e8=Q Rxe8 4. Nxe8+ Kc6 {
draws. Black has enough counterplay with Nc5 coming up.}) 2... Rxe8 3. exd7 Re1
$1 {Prokes manoeuvre.} 4. c8=N+ $1 (4. Rxe1 $2 Kxc7 {draws, for example} 5. Re7
Kd8 6. Rh7 b5 7. Rh5 Kxd7 8. Rxb5 Kc6 9. Rh5 d5 {
and White can not make progress.}) 4... Kc7 5. Rxe1 d2 6. d8=Q+ $1 Kxd8 7. Re8+
$1 {Prokes manoeuvre.} Kxe8 8. Kxc2 Kd7 9. Na7 $1 ({The c4 pawn is poisoned:} 
9. Nb6+ $2 Kc6 10. Nxc4 d1=Q+ $1 11. Kxd1 Kc5 {draws. Black follows up with b5
or d5 and will be able to exchange White's last pawn.}) 9... Kc7 10. Nb5+ Kc6
11. Na3 b5 12. Kxd2 Kc5 13. Nc2 {wins.} 1-0

[Event "TT Logical uncastling, Prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "3. Ostmoe G.S.T."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "r3k3/4p3/P2pP3/3P4/p4RP1/2R5/Pp1pPP2/4nK2 w q - 0 1"]
[PlyCount "17"]
[EventDate "2017.??.??"]

1. Rh3 $1 {Plan 2.Rh8#.} O-O-O 2. a7 (2. Rb4 $2 Nf3 $1 {wins.}) 2... Kb7 (2...
Kc7 3. Rc3+ Kb6 4. Rb4+ Ka5 5. Rb8 {wins.}) 3. a8=Q+ $1 (3. Rb4+ $2 Ka8 $1 {
wins.}) 3... Rxa8 4. Rb4+ Kc7 (4... Ka6 5. Ra3 d1=Q 6. Raxa4+ Qxa4 7. Rxa4+ Kb6
(7... Kb5 8. Rxa8) 8. Rb4+ $1 (8. Rxa8 $2 Kc7 $1) 8... Kc5 9. Rxb2 {wins.}) 5.
Rc3+ Kd8 6. Rf4 Ke8 {The position is now the same as the initial position,
except that Black can not castle (and the a6 pawn is gone).} 7. Rh3 $1 {
Plan 8.Rh8#. Now 7...0-0-0 is illegal, otherwise it would have drawn: 8. Rc3+
Kb7 9.Rb4+ Ka6.} Kd8 8. Rc4 b1=Q 9. Rh8# {Logical uncastling: White makes an
initial threat which is prevented by Black's castling. Then White forces
Black's king and rook back to their original squares, and White repeats the
initial threat, which can not be prevented because Black can not castle.} 1-0

[Event "A.Selivanov-50, 1st prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "1. Pervakov O."]
[Black "WCCI 8.5"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "7n/1BP4b/1n6/5P2/8/4K3/7p/4Nk2 w - - 0 1"]
[PlyCount "31"]
[EventDate "2017.??.??"]

{Both pawns are detained, but the black pawn will cost white a piece sooner or
later...} 1. Nf3 $1 {
To deal with a pawn it is necessary to oblige her to turn into a queen!} h1=Q
2. Nd2+ Kg1 3. Bxh1 $1 {
Difficult choice. But to leave on a board a bishop - means to die:} (3. Nf3+ $2
Qxf3+ $1 4. Bxf3 Bxf5 5. Kf4 Bc2 $1 ({but not} 5... Bd7 $2 6. Bg4 $11) 6. Bb7
Ng6+ 7. Kg5 Ne7 $19) 3... Kxh1 4. Kf4 $3 ({Logical try} 4. Ne4 $2 Nd5+ (4...
Bxf5 $2 5. Ng3+ $11) 5. Kd4 Nxc7 6. Ke5 Ne8 $1 (6... Bg8 $2 7. Kf6 Ba2 8. Nd6
$1) 7. Ke6 Ng7+ $1 8. Kf6 Nxf5 $1 9. Ng5 Bg6 10. Ne6 Nd6 $1 (10... Nh6 11. Nd8
$1) 11. Kg7 Ndf7 $19 {
, and black pieces were located comfortably in the top right corner}) ({
Other moves of the king are easily disproved:} 4. Ke4 $2 Nf7 $19) ({or} 4. Kd4
$2 Bxf5 $19) 4... Nd5+ (4... Bg8 5. Ne4 Nd5+ 6. Ke5 Nxc7 7. Kf6 $11) (4... Nf7
5. Ne4 $1 Nd5+ 6. Kg4 $1 Nxc7 7. Nf6 $11 {, and the bishop is caught}) 5. Ke5
$1 (5. Kg5 $2 Nf7+ $1 $19) 5... Nxc7 6. Kf6 $1 ({
It is senseless to attack a knight c7:} 6. Kd6 $2 Nb5+ $1 7. Ke6 Bg8+ 8. Kf6
Ba2 $19) 6... Ne8+ 7. Ke7 {
Amusing route of the white king on e3-f4-e5-f6 as "snake"!} Ng7 8. Kf6 Nh5+ 9.
Kg5 $1 Ng3 10. Kf6 Nxf5 {Just a moment! We see the same position from logical
try with one more tempo for black (the knight there already stood on e4!). An,
no!} ({It was not succeeded to frighten white: after} 10... Bxf5 11. Nf1 $1 {
black remain with two useless knights.}) 11. Nf3 $3 {Here it, the sweet field
for a knight with a high, juicy grass in the form of three black pieces!} Bg6
$1 12. Ne5 Bh7 13. Nf3 Kg2 {And what else? It is necessary to go...} 14. Ng5
Bg6 15. Ne6 $1 {Oops! It was so pleasant to the black king in h1 corner (see
logical try 4.Ne4)! And here the poor king was enticed on g2...} Kf3 (15... Nd6
16. Nf4+ $1 $11 {, the fork trapped suddenly}) 16. Nf8 $1 {
And the poor bishop is caught!} 1/2-1/2

[Event "Olympic ty, 1st prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Pervakov O."]
[Black "WCCI 10.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "4R3/1r2P3/3r2P1/8/p4q2/1pQp1k1P/P6P/3RK3 w - - 0 1"]
[PlyCount "29"]
[EventDate "2018.??.??"]

1. Rd2 $1 ({Simple draw after} 1. Rxd3+ $2 Rxd3 2. Qxd3+ Qe3+ (2... Kg2 $11 {
also is possible}) 3. Qxe3+ Kxe3 4. axb3 axb3 5. Rc8 Rxe7 6. Rb8 Kf4+ 7. Kf2
Kg5 8. Rxb3 Kxg6 $11) 1... Rxe7+ $1 {Attracting the white rook on e7.} (1...
Qe3+ 2. Kf1 $18) (1... Re6+ 2. Kd1 $18) 2. Rxe7 Qh4+ 3. Kf1 $3 {
It is necessary to get rid of pawn h3!} ({Logical try-1:} 3. Kd1 $2 Qxe7 4. g7
(4. axb3 Qe3 $1 $11) 4... Qg5 $1 5. Rxd3+ (5. Kc1 b2+ 6. Kb1 Qg1+ 7. Kxb2 a3+
$1 8. Kxa3 Ra6+ 9. Kb2 Rb6+ $11) (5. Re2 bxa2 $1 6. Rxa2 Qg1+ 7. Qe1 Rg6 $11)
5... Qe3 $1 6. Qc6+ $5 Kf2 $1 7. Qg2+ Kxg2 8. g8=Q+ Kxh2 $11 {
and the pawn h3 prevents white to carry out conceived.}) 3... Qxh3+ 4. Ke1 (4.
Kg1 $2 Rxg6+ 5. Kh1 Qf1#) 4... Qh4+ 5. Kd1 Qxe7 6. g7 $1 {
It is necessary to win a tempo.} ({After} 6. Rxd3+ Qe3 $1 $19 {
"the Maltese cross" conducts to a victory of black.}) ({
The mate waits white after} 6. Qc5 $2 Qe2+ $1 7. Rxe2 dxe2+ 8. Ke1 Rd1#) 6...
Qg5 $1 7. Rxd3+ Qe3 $1 8. Qc6+ $3 {Correct "removal from a cross"!} ({
Logical try-2:} 8. Qf6+ $2 Rxf6 $1 9. Rxe3+ Kxe3 10. g8=Q Rf1# $1) 8... Kf2 $1
(8... Rxc6 9. Rxe3+ Kxe3 10. g8=Q $18) 9. Qg2+ $1 (9. Rxd6 $2 Qe1#) 9... Kxg2
10. g8=Q+ Kh3 $1 {
Protection of black is based on win white rook d6 after capture black rook.} ({
So, badly} 10... Kh1 11. Qa8+ Kg1 12. Rxd6 $18) 11. Qh8+ $1 {
And a problem of white - to force black to take also the second pawn "h".} ({
Early} 11. Rxd6 $2 Qf3+ 12. Kc1 Qc3+ $11) (11. Qh7+ $2 Kg4 $1 12. h3+ Kg3 $1
13. Rxd6 Qf3+ $11) 11... Kg2 $1 (11... Kg4 12. h3+ $1 Kg3 13. Qe5+ $1 $18) 12.
Qg7+ $1 ({No progress after} 12. Qa8+ Kh3 $1 {, because} 13. Qh1 {is not check}
) 12... Kxh2 {It is necessary.} (12... Kh3 13. Rxd6 Qf3+ 14. Kc1 $1 Qf1+ 15.
Rd1 $1 Qc4+ {and white is not necessary the rook any more:} 16. Kb2 Qc2+ 17.
Ka3 Qxd1 18. Qg3# $1) 13. Qh8+ $1 {
The pawn of h2 is destroyed, and white realize the plan.} ({But not} 13. Qh7+
$2 Qh6 $11) ({or} 13. Rxd6 $2 Qf3+ 14. Kc1 Qf1+ $1 15. Kb2 Qf2+ 16. Ka3 Qc5+
17. Kxa4 Qxd6 $11) 13... Kg2 (13... Kg3 14. Qe5+ $1 $18) (13... Qh6 14. Qe5+ $1
$18) (13... Kg1 14. Rxd6 Qf3+ 15. Kc1 $1 Qf4+ 16. Rd2 $18) 14. Qa8+ $1 Kh3 ({
The white king leaves easily from checks after} 14... Kg3 15. Rxd6 Qg1+ 16. Kd2
Qf2+ 17. Kd3 Qc2+ 18. Kd4 Qd2+ 19. Kc5 $1 $18) ({or} 14... Kh2 15. Rxd6 Qg1+
16. Ke2 $1 Qg4+ 17. Qf3 $18) 15. Qh1+ $1 {with the decisive check and the
subsequent capture of the black rook. The newborn white queen visited three
corners of a board.} (15. Rxd6 $2 Qg1+ 16. Kd2 Qh2+ $11) 1-0

[Event "EG-50, 1st prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "3. Pervakov O."]
[Black "WCCI 11.5"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "4K3/k3N3/p7/3p1N2/2r3b1/1R6/q2pn3/4BQ2 w - - 0 1"]
[PlyCount "20"]
[EventDate "2016.??.??"]

1. Qf2+ $1 ({Try} 1. Bf2+ $2 Ka8 $1 2. Rb6 Qa4+ 3. Kd8 Bxf5 4. Nxf5 Nd4 $1 5.
Bxd4 (5. Nxd4 d1=Q 6. Qxd1 Qxd1 7. Nc6 Rxc6 8. Rxc6 d4 $19) 5... d1=Q 6. Qf4 (
6. Qg2 Qxd4 $1 7. Nxd4 Qa5 $1 8. Ke8 Rc8+ 9. Kd7 Qxb6 10. Kxc8 Qxd4 $19) 6...
Rc8+ $1 7. Kxc8 Qe8+ 8. Kc7 Qc2+ 9. Kd6 Qcc8 $1 10. Kxd5 Qg8+ 11. Ke4 Qc2+ 12.
Ke5 Qc7+ 13. Ke4 Qg2+ 14. Qf3 Qcc2+ 15. Ke3+ Qxf3+ 16. Kxf3 Qxf5+ $19) 1... d4
$1 (1... Ka8 2. Rb8+ $1 Kxb8 3. Qb6+ $11) 2. Nc6+ $1 (2. Nxd4 $2 Bd7+ $1 3.
Kxd7 Rxd4+ 4. Ke8 Qxb3 5. Bxd2 Qb5+ 6. Kf7 Qc4+ 7. Kf8 Kb8 $19) 2... Rxc6 (2...
Ka8 $2 3. Rb8#) 3. Nxd4 Bd7+ $1 {Open counterplay} (3... Bh5+ $2 4. Ke7 Nxd4 5.
Qxd4+ Ka8 6. Qh8+ $18) (3... Nxd4 $2 4. Qf7+ $18) 4. Kxd7 (4. Ke7 $2 Nxd4 5.
Qxd4+ Ka8 6. Qh8+ Bc8 $19) 4... d1=Q ({After} 4... d1=R $5 {
White build the new battery:} 5. Qf7 $1 $11) 5. Bd2 $3 {The echo-sacrifice!} (
5. Kxc6 $2 Nxd4+ 6. Qxd4+ Qxd4 $19 {, and no stalemate - bishop on the board!})
(5. Qf7 $2 Qaxb3 $19) 5... Qaxd2 $1 6. Kxc6 Qh1+ ({Main} 6... Qh6+ 7. Ne6+ Nd4+
8. Qxd4+ $1 Qxd4 9. Rb7+ Ka8 10. Rb8+ $1 Kxb8 $11 {
The 1-st mirror ideal stalemate with pin knight}) ({Main} 6... Q1c1+ 7. Nc2+
Nd4+ 8. Qxd4+ $1 Qxd4 9. Rb7+ Ka8 10. Rb8+ $1 Kxb8 $11 {
The 2-nd mirror ideal stalemate with pin knight}) 7. Nf3+ Nd4+ (7... Qd4 8.
Rb7+ Ka8 9. Rb8+ $1 Kxb8 10. Qg3+ $1 $11) 8. Qxd4+ $1 Qxd4 9. Rb7+ Ka8 10. Rb8+
$1 Kxb8 $11 {And the 3-rd mirror ideal stalemate with pin knight!} 1/2-1/2

[Event "JPA-85 JT, 1st prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "4. Pervakov O."]
[Black "WCCI 9"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "4n2k/1p6/7K/1p4N1/4p3/6Rp/1P1qPn1P/7Q w - - 0 1"]
[PlyCount "35"]
[EventDate "2017.??.??"]

1. Qe1 $1 {Look at c3 and h4 squares} Qd6+ (1... Qxe1 $2 2. Nf7#) 2. Ne6 $1 (2.
Kh5 $2 Ng7+ 3. Kh4 Qh6#) 2... Qxe6+ 3. Rg6 Nf6 $1 (3... Ng4+ $2 4. Kg5 $1 Nef6
(4... Qe5+ 5. Kxg4 Kh7 6. Rb6 $1 $18) 5. Qh4+ Nh7+ 6. Qxh7+ Kxh7 7. Rxe6 $18)
4. Qc3 $1 {Pin knight f6} (4. Qxf2 $2 Ng4+ 5. Kg5 Qxg6+ 6. Kxg6 Nxf2 $19) 4...
N2g4+ $1 5. Rxg4 (5. Kg5 $2 Ne5 $1 {Unpin knight f6} 6. Rxf6 Qg4+ 7. Kh6 Qh4#)
5... Qf5 $1 6. Rh4 (6. Rg5 $2 Qh7#) 6... b4 $1 {
Black begin counterplay. They want to close diagonal a1-d4 for white queen} 7.
Qd4 b3 $1 (7... e3 $2 8. b3 $18) 8. Qc3 $1 ({The 1-st logical try:} 8. e3 $6 {
(play for stalemate or perpetual check)} b6 $1 9. Qc3 b5 10. Qd4 b4 11. Qd8+
Ng8+ 12. Qxg8+ Kxg8 13. Rg4+ $1 Kf7 14. Rg7+ Ke6 15. Rg6+ Kd5 $1 16. Rg5 Qxg5+
17. Kxg5 Kc4 18. Kf4 Kd3 $19) 8... e3 $1 (8... b6 $2 9. Rxh3 $18) 9. Qd4 $1 ({
The 2-nd logical try:} 9. Qc4 $6 Ng8+ 10. Qxg8+ Kxg8 11. Rg4+ $1 Kf8 12. Rg8+
$1 Ke7 13. Rg7+ Kd6 14. Rg6+ Kc7 15. Rg7+ Kb8 16. Rg8+ Ka7 $1 $19) 9... b6 $1 {
Lose a tempo} 10. Qc3 $1 ({The 3-rd logical try:} 10. Qd8+ $6 Ng8+ 11. Qxg8+
Kxg8 12. Rg4+ $1 Kf7 13. Rg7+ Ke6 14. Rg6+ Kd7 15. Rg7+ Kc6 16. Rg6+ Kb7 17.
Rg7+ Ka6 $1 $19) ({Try} 10. Rxh3 $2 Qxh3+ 11. Kg5 Qg2+ $1 12. Kf5 (12. Kxf6
Qg7+ $19) 12... Qd5+ 13. Qxd5 Nxd5 14. Ke4 Nc3+ $1 $19) 10... b5 11. Qd4 b4 {
White in zugzwang? But...} 12. Qd8+ {(c4)} Ng8+ 13. Qxg8+ Kxg8 14. Rg4+ $1 Kf8
(14... Qxg4 $11 {stalemate}) 15. Rg8+ $1 Ke7 (15... Kxg8 $11 {stalemate}) 16.
Rg7+ Kd6 (16... Kf6 17. Rf7+ $1 Kxf7 $11 {stalemate}) 17. Rg6+ Ke7 18. Rg7+ {
Perpetual check or stalemate} 1/2-1/2

[Event "Ural Problemist-25, 1st-2nd prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Pervakov O."]
[Black "WCCI 11.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "3K2R1/3Pp3/2k5/8/3P4/7p/b1PR2p1/4r3 w - - 0 1"]
[PlyCount "33"]
[EventDate "2018.??.??"]

{Pawn overlapping of diagonal a2-g8 arises - 1.d5.} 1. c4 $3 ({Logical try} 1.
d5+ $2 Bxd5 2. Rxd5 h2 3. Kc8 ({or} 3. Rg6+ e6 $1 4. Kc8 Ra1 {and so on}) 3...
Ra1 $1 4. Rg6+ e6 $1 5. Rd6+ (5. Rxe6+ Kxd5 6. Ra6 $5 Rxa6 7. d8=Q+ Ke4 $1 8.
Qh4+ Kf3 $11) 5... Kc5 6. Rg5+ e5 7. Rd5+ (7. Rxe5+ Kxd6 8. Ra5 $5 Rxa5 9.
d8=Q+ Ke6 $1 10. Qg8+ Ke5 11. Qxg2 Rc5+ 12. Kd7 Rxc2 $11) 7... Kc4 8. Rg4+ e4
9. Rd4+ Kc3 10. Rg3+ e3 $1 (10... Kb2 $2 11. Rb4+ Kc1 12. d8=Q Ra8+ 13. Rb8
Rxb8+ 14. Kxb8 g1=Q 15. Qg5+ $18) 11. Rd3+ Kb2 $1 $11 {
, and the black king hid in a shadow of a pawn c2}) (1. Rg6+ $2 Re6 $1 $11) (1.
Rdxg2 $2 hxg2 2. Rxg2 Be6 3. Rg6 Kd5 $11) 1... Bxc4 ({Rook ending after} 1...
g1=Q 2. Rxg1 Rxg1 3. Rxa2 Rg8+ 4. Kxe7 Kc7 5. c5 $18 {is easy win for white})
2. d5+ ({The pin of bishop does not lead to success:} 2. Rc2 $2 g1=Q 3. Rxg1
Rxg1 4. Rxc4+ Kd5 $1 5. Rc5+ Kxd4 6. Rc1 $5 Rxc1 7. Ke8 h2 8. d8=Q+ Ke4 $1 9.
Qxe7+ Kf3 $11) 2... Bxd5 (2... Kc5 3. Kc7 h2 4. Rgxg2 h1=Q 5. d8=Q $18) 3. Rxd5
$1 (3. Rg6+ $2 Re6 $19) (3. Ke8 $2 g1=Q $11) 3... h2 $1 {The best chance} (3...
Kxd5 4. Ke8 g1=Q 5. d8=Q+ Ke4 6. Rxg1 Rxg1 7. Qd2 Kf3 8. Qh2 $1 $18) (3... g1=Q
4. Rxg1 Rxg1 5. Rd2 Rg2 6. Rd1 $1 $18) 4. Kc8 $1 ({Early} 4. Rg6+ $2 Kxd5 $1 5.
Ke8 g1=Q 6. d8=Q+ Ke5 $19) 4... Ra1 $1 ({Hopelessly} 4... g1=Q 5. d8=Q Qxg8 6.
Qxg8 h1=Q 7. Rf5 e5 8. Qc4+ $18) 5. Rg6+ e6 $1 6. Rd6+ $1 (6. Rxe6+ $2 Kxd5 7.
Ra6 Rxa6 8. d8=Q+ Ke4 $11) 6... Kc5 7. Rg5+ e5 8. Rd5+ ({
It is not possible to mate the black king after} 8. Rxg2 $2 Ra8+ $1 9. Kc7 h1=Q
10. Rc2+ Kb4 11. Rb6+ Ka3 $11) 8... Kc4 (8... Kc6 9. Rg6+ Kxd5 10. d8=Q+ Ke4
11. Qh4+ $18) (8... Kxd5 9. d8=Q+ Ke4 10. Qd6 $18) 9. Rg4+ e4 10. Rd4+ (10.
Rxg2 $2 h1=Q 11. Rc2+ Kb3 $1 $11) 10... Kc3 (10... Kc5 11. Rg5+ Kxd4 12. d8=Q+
Ke3 13. Qb6+ $18) 11. Rg3+ e3 12. Rd3+ $1 {
For the 4-th time repeating a step of the systematic movement} Kc4 $1 {
Alas, not to hide any more - a white pawn c2 is not on a board!} (12... Kc2 13.
Rxg2+ $18) 13. Rg4+ Kxd3 14. d8=Q+ Ke2 15. Rxg2+ Kf1 16. Qd5 $1 (16. Qf6+ $2
Kxg2 17. Qb2+ e2 $11) (16. Rxh2 $2 Ra8+ $11) 16... h1=Q 17. Qf3+ {Logical dumpi
ng of a white pawn precedes the systematic movement of four pieces.} 1-0

[Event "Y.Afek-64 JT, 2nd prize"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "6. Pervakov O."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "1R6/8/6N1/8/3b1K2/3P1p1k/8/3b4 w - - 0 1"]
[PlyCount "15"]
[EventDate "2016.??.??"]

1. Rb1 $1 Be2 $1 (1... Bc2 2. Rf1 f2 (2... Kh2 3. Rxf3 Bd1 4. Nh4 $1 $18) 3.
Kf3 Kh2 4. Ne5 $1 $18) 2. Nh4 $3 (2. Ke4 $2 Kg3 3. Nf4 (3. Kxd4 f2 $11) 3...
Bc3 $1 4. Rg1+ Kh2 5. Rg4 (5. Rg6 Bd2 6. Rg4 Bxf4 7. Rxf4 Kg3 8. Ke3 Bxd3 $11)
5... Bd1 6. d4 Be1 7. Ke3 f2 8. Rg2+ Kh1 9. Rxf2 Bxf2+ 10. Kxf2 Bb3 $11) 2...
Be5+ $1 (2... Bxd3 3. Rh1# (3. Rd1 f2 4. Rh1# {- lost time})) 3. Kxe5 Bxd3 $1 (
3... f2 4. Rh1+ Kg4 5. Nf5 $1 Bxd3 6. Ne3+ Kf3 7. Kd4 $18) (3... Kxh4 4. Kf4 $1
Kh3 5. Ke3 $18) 4. Rd1 $1 ({Thematic try} 4. Rh1+ $2 Kg3 $1 5. Kd4 Bc2 $1 6.
Ke3 f2 7. Nf3 Be4 $3 {The second bishop's sacrifice!} (7... Bd3 $2 8. Nd2 Kg2
9. Rh5 $1 $18) 8. Kxe4 Kg2 9. Rh2+ Kg3 10. Rh1 Kg2 {Positional draw} 11. Kf4 $5
Kxh1 $11 (11... f1=Q $4 12. Rh2#)) (4. Rb3 $2 Bc2 $1 (4... Bc4 $2 5. Rxf3+ Kxh4
6. Rf4+ $18) 5. Rc3 Kxh4 6. Rxc2 Kg3 $11) 4... Be2 $1 (4... Bc2 5. Rc1 Kxh4 6.
Kf4 $18) (4... Kxh4 5. Rxd3 f2 6. Rf3 $18) 5. Rh1+ Kg4 $1 6. Nf5 $1 f2 7. Ne3+
Kf3 (7... Kg3 8. Ra1 Kf3 9. Kd4 Bb5 10. Rb1 Ba6 11. Rb6 Be2 12. Rf6+ $18) 8.
Rh3# $1 {Ideal mate with two active blockings. Echo with 3.Rh1#, but in the
middle of the board.} (8. Kd4 $2 f1=Q 9. Nxf1 Kg2 $11) 1-0

[Event "Tarasiuk-50 JT, 1st-5th Prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "1. Popov G."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "5B2/PPPPPPPP/q7/3rppp1/2p4p/3p3n/5p2/3N1Kbk w - - 0 1"]
[PlyCount "35"]
[EventDate "2018.??.??"]

1. a8=Q $1 (1. a8=R $2 Qxb7 $19) 1... Qa5 2. Qxa5 Rxa5 3. b8=Q $1 (3. e8=Q $2
Ra1 4. Qa8 Rxd1#) 3... Ra1 4. Qa8+ $1 Rxa8 5. e8=Q $1 ({Thematic try:} 5. d8=Q
$2 Ra1 6. Qa8+ Rxa8 7. e8=Q Ra1 8. Qa8+ Rxa8 9. Ba3 Rxa3 10. f8=Q Ra1 11. Qa8+
Rxa8 12. g8=Q Ra1 $19) 5... Ra1 6. Qa8+ $1 Rxa8 7. Ba3 $3 Rxa3 8. g8=Q $1 (8.
f8=Q $2 Ra1 9. Qa8+ Rxa8 10. g8=Q Ra1 11. Qa8+ Rxa8 12. c8=Q Ra1 13. Qc6+ e4
14. Qa4 Rxa4 15. h8=Q Ra2 16. d8=Q Re2 $19) 8... Ra1 9. Qa8+ $1 Rxa8 10. c8=Q
$1 Ra1 11. Qc6+ e4 12. Qa4 $1 Rxa4 13. h8=Q $1 Rb4 $1 (13... Ra2 14. d8=Q Re2
15. Qc3 $18) 14. Nc3 $1 (14. Nb2 $2 Nf4 $1 15. d8=Q Rxb2 16. Qxb2 e3 17. Qa8+
Kh2 18. Qxf2+ Bxf2 19. f8=Q Kg3 20. Qf3+ Kxf3 21. Qa8+ Kg4 22. Qf3+ Kxf3 {
stalemate}) 14... Nf4 $1 15. d8=Q $1 (15. f8=Q $2 e3 16. Qa8+ Kh2 $19) 15... e3
16. Qxh4+ gxh4 17. Qxh4+ Bh2 18. f8=Q 1-0

[Event "Marwitz-100 MT, Special Prize (version)"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "1. Rusz A."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "K6Q/5Prr/8/8/8/5p1p/k1P5/8 w - - 0 1"]
[PlyCount "107"]
[EventDate "2016.??.??"]

{The try, the thematic try, and the solution all feature different systematic
movements.} 1. Qxh7 $1 ({Try:} 1. f8=Q $2 Ra7+ $1 (1... Rxh8 $2 2. Qxh8 f2 3.
Qxh3 $18) 2. Kb8 Rab7+ $1 (2... Rhb7+ $2 3. Kc8 Rc7+ 4. Kd8 Rd7+ 5. Ke8 Re7+ 6.
Qxe7 $18) 3. Kc8 Rbc7+ 4. Kd8 Rcd7+ 5. Ke8 Rde7+ 6. Qxe7 (6. Kd8 Rd7+ {
perpetual check}) 6... Rxh8+ 7. Kd7 h2 8. Qf7+ Kb1 9. Qb3+ Kc1 $11 (9... Ka1 $2
10. Qc3+ $18)) ({Getting another queen didn't work so white has to try
capturing one of the rooks before promotion. At first sight, it seems more
logical to leave a rook on g7 (and not on h7 behind a passed pawn). Thematic
try:} 1. Qxg7 $2 Rxg7 2. f8=Q h2 $1 3. Qxf3 Rg8+ $3 {
Paradoxically, black lets the white king to escape from the eight rank!} ({
The immediate} 3... Rg1 $2 {
loses because of a Queen staircase on the a and b-files from b3 to b8!} 4. Qb3+
Ka1 5. Qa3+ Kb1 6. Qb4+ Ka1 (6... Kc1 7. Qf4+ $18) 7. Qa5+ Kb1 8. Qb6+ Ka1 (
8... Kc1 9. Qh6+ $18) 9. Qa7+ Kb1 10. Qb8+ $18) (3... Rh7 $2 {would lose after}
4. Qh1 $18) 4. Kb7 Rg1 $1 {Only now!} ({Another check would be fatal:} 4...
Rg7+ $2 5. Kc8 $3 {
In order to win, the white king needs to go back to the 8th rank!} (5. Kc6 $2
Rg1 6. Qb3+ Ka1 7. Qa3+ Kb1 8. Qb4+ Ka1 9. Qa5+ Kb1 10. Qb6+ Kc1 $1 $11 {
and 11.Qh6+ is impossible}) 5... Rg8+ 6. Kd7 $1 $18) 5. Qb3+ Ka1 6. Qa3+ Kb1 7.
Qb4+ Ka1 (7... Ka2) 8. Qa5+ Kb1 9. Qb6+ Ka1 (9... Ka2) 10. Qa7+ Kb1 $11 (10...
Kb2)) 1... Rxh7 {Surprisingly, it is better for white to leave a rook behind
one of the dangerous pawns than to have it on g7 as in the thematic try.} 2.
f8=Q f2 $1 (2... h2 3. Qg8+ $18) 3. Qxf2 (3. Qg8+ $2 Ka1 $1 4. Qxh7 f1=Q $11) (
3. c4 $2 Rh8 $1 4. Qxh8 f1=Q $11) 3... h2 {
Unfortunately for white, the queen cannot reach h1 in one move.} 4. c4+ $1 Kb3
5. Qf3+ Kb4 $1 (5... Kxc4 6. Qe4+ $18) 6. Qh1 Kc5 $1 {Now the white king is
stuck on the eight rank. The plan that looks logical is starting to move the
white king towards the rook. But it doesn't work yet! While the black king is
on c5 the rook can leave the seventh rank (e.g. by moving to h5).} 7. Qd5+ Kb4
8. Qd2+ Kc5 9. Qf2+ Kb4 10. Qb2+ Kc5 11. Qb5+ Kd4 12. Qd5+ Kc3 13. Qh1 Kd4 {
The black king is not on c5 so the white king can make a move towards the rook!
} 14. Kb8 $1 {The 1st step.} Kc5 {Back to c5... White needs to repeat this
8-move-long manoeuvre to gain a tempo for another king move.} 15. Qd5+ Kb4 16.
Qd2+ Kc5 17. Qf2+ Kb4 18. Qb2+ Kc5 19. Qb5+ Kd4 20. Qd5+ Kc3 21. Qh1 Kd4 22.
Kc8 $1 {The 2nd step.} Kc5 23. Qd5+ Kb4 24. Qd2+ Kc5 25. Qf2+ Kb4 26. Qb2+ Kc5
27. Qb5+ Kd4 28. Qd5+ Kc3 29. Qh1 Kd4 30. Kd8 $1 {The 3rd step.} Kc5 31. Qd5+
Kb4 32. Qd2+ Kc5 33. Qf2+ Kb4 34. Qb2+ Kc5 35. Qb5+ Kd4 36. Qd5+ Kc3 37. Qh1
Kd4 38. Ke8 $1 {The 4th step.} Kc5 39. Qd5+ Kb4 40. Qd2+ Kc5 41. Qf2+ Kb4 42.
Qb2+ Kc5 43. Qb5+ Kd4 44. Qd5+ Kc3 45. Qh1 Kd4 46. Kf8 $1 {The 5th step.} Kc5
47. Qd5+ $1 ({It is too early to attack the rook:} 47. Kg8 $2 Rh5 $1 48. Kg7
Kb6 $1 $11) 47... Kb4 48. Qd2+ Kc5 49. Qf2+ Kb4 50. Qb2+ Kc5 51. Qb5+ Kd4 52.
Qd5+ Kc3 53. Qh1 Kd4 54. Kg8 $1 {The last step along the 8th rank. The white
king will finally escape from the eight rank. White has a winning position.
The last move was exactly the 50th one since the last capture or pawn push (4.
c4+) so, according to the FIDE rules, this position would be a draw!
Fortunately, endgame study composition codex doesn't care about that
artificial "draw by 50 moves" rule!} 1-0

[Event "Malyshko-105 MT, 2nd Prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "2. Rusz A."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "3n4/8/3P4/3p4/3K4/8/3N4/3k4 w - - 0 1"]
[PlyCount "23"]
[EventDate "2017.??.??"]

1. Nf3 $1 ({Thematic try:} 1. Nb3 $2 Ne6+ $1 ({Black thematic try:} 1... Nc6+
$2 2. Kxd5 Nb8 3. Nc5 Kc2 4. Na6 $1 Nd7 5. Ke6 Nb6 6. Nc7 Kb3 7. Na8 $3 {
The white knight leaves the d5 square empty for the king.} Na4 8. Kd5 $1 $18)
2. Ke5 $1 (2. Kxd5 Nf8 3. Nd4 Kd2 4. Ne6 Nd7 5. Kc6 Ne5+ 6. Kd5 Nd7 {
positional draw}) 2... Nf8 3. Nc5 d4 ({or} 3... Kc2 4. Kf6 d4) 4. Kf6 Kc2 5.
Kf7 d3 6. Nxd3 Nd7 7. Ke8 Nf6+ $1 (7... Nb6 $2 8. Nc5 Kc3 9. Na4+ $1 $18) 8.
Ke7 Nd5+ 9. Ke6 Nb6 10. Nb4+ Kb3 {(Position X')} 11. Nd5 {
The white knight blocks the d5 square for the king.} Na4 $1 12. d7 Nc5+ $11)
1... Nc6+ $1 {In order to avoid some sacrifices, the black knight tries to
stay on the other flank compared to the white knight's position.} (1... Ke2 2.
Ne5 Ne6+ 3. Kxd5 Nf8 4. Ng6 $1 $18) (1... Ne6+ 2. Kxd5 Nf8 3. Ne5 (3. Nh4) 3...
Kd2 4. Ng6 $18) 2. Kc5 $1 (2. Kxd5 $2 Nb8 3. Nd4 Kd2 4. Nc6 Nd7 5. Ke6 Nc5+ 6.
Kd5 Nd7 {positional draw}) 2... Nb8 3. Ne5 d4 $1 4. Kb6 $1 {
There is no time to pick up the pawn!} Ke2 5. Kb7 $1 {
The black knight seems caught but it will manage to escape.} d3 6. Nxd3 {
There was no time to capture the black knight.} Nd7 7. Kc8 $1 {
This is the best square to avoid some nasty knight forks.} (7. Kc6 $2 Nf8 $1 8.
Ne5 Kd2 $1 (8... Ke3 $2 9. Kd5 $18 {mutual zugzwang}) 9. Ng6 Nxg6 10. d7 Ne5+
$11) 7... Nb6+ $1 {Before going to the longer flank, the black knight tries to
chase the king to a less favourable square.} 8. Kc7 Nd5+ 9. Kc6 Nf6 {By pushing
the white king to c6, black has managed to dismiss g4 as a square for a knight
sacrifice.} 10. Nf4+ Kf3 {(Position X) We have a situation similar to the
initial position: the attacked knight has to decide again which way to go.} 11.
Nh5 $3 {
The white knight finds another square to sacrifice itself using the extra file.
} (11. Nd5 $2 {is bad because it blocks the d5 square.} Ng4 $1 12. d7 Ne5+ $11)
11... Ng4 12. Kd5 $1 {The white king returns to the d-file which was the
symmetry axis of the initial position. This move is the reason why the d5
square was left empty! It is paradoxical that the knight is better placed on
the edge of the board (h5) or even on a corner square (a8) than in the centre
(d5)!} 1-0

[Event "JPA-85 JT, Special HM"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "3. Rusz A."]
[Black "WCCI 9"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/4P2p/1R6/r7/8/pK3k1r/8/8 w - - 0 1"]
[PlyCount "20"]
[EventDate "2017.??.??"]

1. Rh6 $3 ({Black has exactly twice as much material than white so it looks
very natural to start with a queen promotion. But that would be wrong as black
wins by an inner study with two echo checkmates:} 1. e8=Q $2 a2 2. Rf6+ Kg2+ 3.
Kc2 (3. Kc4 Ra4+ $1 4. Qxa4 Rh4+ $19) 3... a1=N+ $1 {
Black chooses to promote the pawn to a knight!} (3... Rc3+ $2 4. Kd2 Rd5+ 5.
Ke2 Rc2+ 6. Ke3 Rc3+ 7. Ke2 $11) 4. Kd1 (4. Kb2 Rb3+ 5. Kc1 Rc5+ 6. Kd2 (6. Kd1
Rb1+ 7. Ke2 Rc2+ 8. Kd3 Rd1+ 9. Ke3 Re1+ $19) 6... Rc2+ 7. Kd1 Rb1# {
echo checkmate}) 4... Rh1+ 5. Kd2 Ra2+ 6. Kd3 Rd1+ 7. Kc3 Rc2+ 8. Kb4 Rb1+ 9.
Ka3 Rb3+ 10. Ka4 Ra2# {echo checkmate}) 1... a2 $1 (1... Rxh6 2. e8=Q a2 3.
Qf7+ $1 (3. Qf8+ $2 Kg2 4. Qg7+ (4. Qxh6 a1=Q $19) 4... Rg6 5. Qb2+ Kh3 6. Qc3+
Rg3 $19) 3... Kg2 4. Qb7+ $1 Kg1 5. Qg7+ Rg6 6. Qd4+ $11) 2. Rxh3+ Kg2 3. Rh1
$3 (3. e8=Q $2 a1=Q 4. Qe4+ Kxh3 5. Qf3+ Kh4 6. Qf4+ Kh5 $19) 3... Kxh1 (3...
Re5 4. Ra1 Rxe7 5. Rxa2+ Kg3 6. Ra5 Rc7 7. Rd5 $1 Kg4 8. Rd4+ Kg5 9. Rd5+ Kg6
10. Rd6+ Kg7 11. Rd5 $1 Rc6 12. Kb4 $1 Kg6 13. Kb5 Rc8 14. Rd6+ Kg5 15. Rd5+
Kg4 16. Rd4+ Kg3 17. Rd3+ (17. Rd5 $2 Rh8 $19) 17... Kg4 18. Rd4+ Kg5 19. Rd5+
Kg6 20. Rd6+ {perpetual check}) 4. e8=Q {Finally, the pawn promotes to a queen.
} a1=Q 5. Qe4+ Kh2 6. Qh4+ Kg2 7. Qg4+ Kf2 8. Qf4+ Ke2 9. Qe4+ Kd2 (9... Kf2
10. Qf4+ Kg2 11. Qg4+ Kh2 12. Qh4+ {perpetual check}) 10. Qd4+ $1 Qxd4 {
stalemate} 1/2-1/2

[Event "Tarasiuk-50 JT, Special HM"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "4. Rusz A."]
[Black "WCCI 8.25"]
[Result "1-0"]
[SetUp "1"]
[FEN "4N2k/3p1p2/1K2p2P/p1P5/4Q1N1/6q1/1p5p/8 w - - 0 1"]
[PlyCount "17"]
[EventDate "2017.??.??"]

1. Qd4+ e5 2. Nxe5 f6 $1 3. Nxf6 b1=Q+ (3... h1=Q 4. Nf7#) 4. Ka7 Qgb3 (4...
Qh7 5. Nxh7 Kxh7 6. Qxd7+ Kxh6 7. Ng4+ Kg5 8. Nxh2 $18) 5. Qb2 $3 {
Sandwich Theme} Qb7+ $1 {Domino Theme} (5... Q1xb2 6. Ng6#) (5... Q3xb2 6. Nf7#
) (5... h1=Q 6. Qxb3 Qxb3 7. Ng6#) 6. Qxb7 Qxb7+ 7. Kxb7 h1=Q+ 8. Kb6 $1 {
The king returns to its initial square after drawing a triangle on the board.}
(8. Ka7 $2 Qxh6 9. Nf7+ Kg7 10. Nxh6 Kxf6 11. Kb6 a4 $11) (8. Kc7 $2 Qh2 $11) (
8. Kc8 $2 Qa8+ $11) (8. c6 $2 Qxc6+ $1 9. Nxc6 dxc6 10. Kxc6 a4 $11) 8... Qxh6
9. Nf7+ 1-0

[Event "Joita MT, 1st Honourable Mention"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Rusz A."]
[Black "WCCI 8.25"]
[Result "1-0"]
[SetUp "1"]
[FEN "7n/p1p2p2/2B2R1p/P6P/P5b1/6Pp/2K2P1P/k2r4 w - - 0 1"]
[PlyCount "15"]
[EventDate "2018.??.??"]

{The a4 pawn prevents white's main plan (1.Rf4 followed by 2.Ra4#). In order
to win, white will try to reach the same position but without the a4 pawn. But
how does this magic trick of "disappearing pawn" work?} 1. Bf3 $1 ({
Logical try:} 1. Rf4 $2 Rd6 $1 $19) (1. f3 $2 Rf1 $1 $11) 1... Rd4 (1... Bxf3
2. Rxf3 {Saavedra's double attack (echo)} Rh1 3. Ra3#) (1... Rd6 2. Rxd6 Bf5+
3. Rd3 $1 $18) 2. Kc3 $1 ({
Due to the white king's poor position, the exchange doesn't work:} 2. Bxg4 $2
Rxg4 3. Rxh6 Rg8 4. Rc6 Rb8 $1 5. Rxc7 Rb2+ 6. Kc3 Rxf2 7. Rxa7 Rxh2 $11) 2...
Rxa4 3. Kb3 Bd7 $1 ({The rook cannot return to its previous place:} 3... Rd4 {
Now the exchange does work because the white king has an improved position.} 4.
Bxg4 $1 Rxg4 5. Rc6 $1 Kb1 6. Rxc7 a6 7. Rc6 $1 (7. Rc8 $2 Rg5 8. Rxh8 Rxh5 $11
) 7... Rg8 $1 8. Rxa6 (8. Rxh6 $2 Kc1 $11) 8... Kc1 9. Rd6 $1 f5 (9... f6 10.
Rd7 $1 $18) 10. Rxh6 (10. Rd7 $2 Rf8 11. a6 Nf7 12. f4 Ra8 13. a7 Nd8 $11 {
mutual zugzwang}) 10... Kd2 11. Re6 $1 Nf7 12. f4 Rxg3+ $1 13. Kb4 $1 $18) 4.
Bc6 $1 Rd4 (4... Bxc6 5. Rxc6 {Saavedra's double attack (echo)} Rxa5 6. Rc1#)
5. Kc3 $1 ({White cannot exchange yet:} 5. Bxd7 $2 Rxd7 6. Rxh6 Rd8 $11) 5...
Rd1 6. Kc2 Bg4 {Now we are back to the initial position but the a4 pawn has
disappeared! The magic trick worked! White can carry out its main plan:} ({
The rook move is again irreversible, the exchange wins due to the better
position of the white king:} 6... Rd4 7. Bxd7 Rxd7 8. Rf4 $1 $18) 7. Rf4 $1 Rd6
8. Ra4# 1-0

[Event "Moscow Ty, 1st Prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "6. Rusz A."]
[Black "WCCI 10.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/8/6P1/6P1/8/2p5/r1P3k1/2KR4 w - - 0 1"]
[PlyCount "21"]
[EventDate "2018.??.??"]

1. Kb1 (1. g7 $4 Ra1#) 1... Rb2+ 2. Ka1 $1 {
The king moves to the first corner square.} Rxc2 3. g7 Rd2 4. Rh1 $3 {
This surprising sacrifice to the second corner is the only way to win. Besides
attracting the black king to a worse square, the white rook has the idea - in
case if it is not captured by the king - of getting to the other side of the
yet unborn} ({Thematic try:} 4. Rf1 $2 {This move also attracts the black king
to a worse square, but as we will see, it has some negative effect few moves
later.} Rd8 (4... Kxf1 $2 5. g8=Q Rd1+ 6. Ka2 c2 7. Qc4+ $18) 5. Rf8 Rd1+ 6.
Ka2 c2 7. g8=Q $4 (7. Rc8 $11) 7... c1=Q $19 {In a QR/QR endgame, the winner
is usually one who gives the first check but now 8. Qa8+ is impossible, and
black is going to win!}) (4. g8=Q $2 Rxd1+ 5. Ka2 c2 $11) (4. Rxd2+ $2 cxd2 5.
g8=Q d1=Q+ $11) (4. Rc1 $2 Rd8 $11) 4... Rd8 (4... Kxh1 5. g8=Q Rd1+ 6. Ka2 c2
7. Qh7+ $18) 5. Rh8 $1 {This is the third move to a corner square!} Rd1+ 6. Ka2
c2 7. g8=Q c1=Q {Unlike in the thematic try, here the white rook doesn't block
the queen's path to the fourth corner.} (7... Ra1+ 8. Kb3 $1 (8. Kxa1 $2 c1=Q+
$11) 8... c1=Q 9. Qd5+ $18) 8. Qa8+ $1 {
White completes the task of visiting all corners of the board.} Kg3 9. Qb8+ Kg4
10. Qb4+ Qf4 11. Rh4+ $1 {The game suddenly ends with another rook sacrifice.}
1-0

[Event "A.Troitsky-150 MT, 1st prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "1. Sochnev A."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/K2p3p/2p3PN/4kP2/4P3/8/p7/8 w - - 0 1"]
[PlyCount "49"]
[EventDate "2017.??.??"]

1. g7 a1=Q+ 2. Kb8 $3 ({Logical try} 2. Kb7 $2 Qg1 3. g8=Q Qxg8 4. Nxg8 d5 5.
f6 Ke6 6. e5 d4 7. Nh6 d3 8. f7 Ke7 9. e6 d2 10. Ng8+ Kf8 11. Nf6 d1=Q 12.
Nxh7+ Ke7 13. f8=Q+ Kxe6 14. Qf6+ Kd7 15. Nf8+ Ke8 16. Ne6 Qd6 $1 {zz} 17. Kc8
Qd7+ 18. Kb8 Qe7 $1 19. Nc7+ Kd7 $1 20. Qd4+ Qd6 21. Qg7+ Kd8 22. Qg8+ Ke7 $1
23. Qg7+ Kd8 24. Qg5+ Kd7 {positional draw}) 2... Qg1 (2... Kxe4 3. g8=Q Qf6 4.
Qxh7 d5 5. Qg6 $18) 3. g8=Q Qxg8+ 4. Nxg8 d5 $1 (4... c5 5. Nh6 c4 6. Ng4+ Kxe4
7. f6 c3 8. Ne3 Kxe3 9. f7 c2 10. f8=Q c1=Q 11. Qh6+ $18) (4... h5 5. Kc7 h4 6.
Nh6 h3 7. Ng4+ $18) 5. f6 Ke6 6. e5 d4 7. Nh6 d3 8. f7 $1 (8. Ng4 $2 h5 9. Nf2
d2 10. Kc7 h4 11. f7 Kxf7 12. Kd7 h3 13. e6+ Kg7 14. e7 h2 $11) 8... Ke7 9. e6
d2 10. Ng8+ $1 (10. Nf5+ $2 Kxe6 11. f8=Q d1=Q 12. Ng7+ Ke5 13. Qf5+ Kd6 14.
Qf8+ Ke5 $1 15. Qf5+ Kd6 {positional draw}) 10... Kf8 (10... Kxe6 11. f8=Q d1=Q
12. Qf6+ Kd5 13. Qd8+ $18) 11. Nf6 d1=Q 12. Nxh7+ $1 (12. Nd7+ $2 Ke7 13. f8=Q+
Kxe6 14. Nc5+ Ke5 15. Qe7+ Kf4 {(f5), =}) 12... Ke7 13. f8=Q+ Kxe6 14. Qf6+ Kd7
15. Nf8+ Ke8 16. Ne6 $1 Qd6+ 17. Kb7 $1 {zz} Qe7+ 18. Nc7+ Kd8 (18... Kd7 19.
Qxc6+ Kd8 20. Qd5+ $18) 19. Qf4 Qa3 20. Qd4+ {(g5)+} Ke7 21. Qg7+ Kd8 22. Ne6+
Ke8 23. Qg8+ Kd7 24. Qc8+ Kd6 25. Qf8+ {1-0} 1-0

[Event "FIDE World Cup, 3rd prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Sochnev A."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "1b4K1/3b4/k2P4/N1B3P1/3p1p2/3P4/8/8 w - - 0 1"]
[PlyCount "27"]
[EventDate "2018.??.??"]

1. Nc4 (1. Nb3 $2 Bxd6 2. Bxd6 Be6+ 3. Kf8 Bxb3 4. g6 Kb5 5. Be5 Kc5 6. Bxf4
Kb4 $11) 1... Be6+ 2. Kh7 $1 ({Logical try} 2. Kh8 $2 Bxc4 3. dxc4 d3 4. d7 Bc7
({Didukh: Moglichkeit} 4... Be5+ $2 5. Kh7 Bc7 6. Bd6 d2 {
etc. Entwertung der Skizze.}) 5. Bd6 d2 6. Bxc7 d1=Q 7. d8=Q Qxd8+ 8. Bxd8 f3
9. g6 f2 10. g7 f1=Q 11. g8=Q Qf7 $1 {zz} 12. Qxf7 {stalemate.}) 2... Bxc4 3.
dxc4 d3 4. d7 Bc7 5. Bd6 $1 d2 (5... Kb7 6. Bxf4 Kc6 7. g6 Kxd7 8. g7 Bxf4 9.
g8=Q $18) 6. Bxc7 d1=Q 7. d8=Q Qxd8 8. Bxd8 f3 9. g6 f2 10. g7 f1=Q 11. g8=Q
Qf7+ 12. Kh8 $1 {zz} (12. Qxf7 {stalemate.}) 12... Qh5+ 13. Kg7 Qg4+ 14. Kf8
$18 1-0

[Event "Ural Problemist-25, 1st-2nd prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "6. Sochnev A."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "5R2/3rP3/3p4/5N2/4k2q/1K1np3/p5p1/5N2 w - - 0 1"]
[PlyCount "59"]
[EventDate "2018.??.??"]

1. e8=Q+ Ne5 2. Qa8+ d5 3. Nxh4 a1=N+ $1 (3... g1=Q 4. Qa4+ $1 d4 5. Qa8+ Kd3
6. Ng2 $1 a1=N+ $1 7. Kb2 $1 Nc4+ 8. Kb1 $1 Kc3 9. Qxa1+ Kb4 10. Ne1 $1 Qg6+
11. Nc2+) 4. Qxa1 Rb7+ $1 5. Kc2 $3 ({Logical try-1} 5. Kc3 $2 d4+ $1 6. Kc2
Rc7+ $1 7. Kd1 g1=Q 8. Rf4+ $1 Kxf4 9. Qxd4+ Kg5 10. Qxe5+ Kxh4 11. Qh8+ Kg4
12. Qg8+ Kf3 13. Qxg1 e2+ 14. Kd2 Rd7+ $1 $11) 5... Rc7+ 6. Kd1 g1=Q 7. Rf4+ $1
(7. Qxe5+ $6 Kxe5 8. Nf3+ Ke6 9. Nxg1 Rf7 $1 10. Rxf7 Kxf7 $11) 7... Kxf4 8.
Qd4+ Kg5 9. Qxe5+ Kg4 10. Qe6+ Kh5 11. Qe8+ $1 Kxh4 12. Qh8+ Kg4 13. Qg8+ Kf3
14. Qxg1 e2+ 15. Kd2 $1 Rc2+ $1 16. Kd3 $3 ({Logical try-2} 16. Kxc2 $2 e1=Q
17. Nd2+ Ke2 18. Qg4+ Kf2 19. Qh4+ Ke2 20. Qh5+ Kf2 21. Qh2+ Ke3 {zz} 22. Qe5+
Kf2 23. Qh2+ Ke3 $11) 16... Rc3+ $1 17. Kxc3 $1 e1=Q+ 18. Nd2+ $1 Ke2 19. Qg4+
Kf2 20. Qh4+ Ke2 21. Qh5+ Kf2 22. Qh2+ Ke3 23. Kc2 $1 {zz} d4 (23... Qf2 24.
Qe5#) 24. Nc4+ Kf3 25. Ne5+ Ke4 26. Qh7+ Ke3 (26... Kxe5 27. Qe7+) 27. Qh6+ Ke4
28. Qc6+ Kf5 29. Qg6+ Kxe5 30. Qe8+ 1-0

[Event "Babich-110 & Olimpiev-80 MT, 1st Prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Stavrietsky A."]
[Black "WCCI 8"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "1B2b2k/2N1qr2/4n2p/4p1PQ/1r2N3/1p6/7P/2KB4 w - - 0 1"]
[PlyCount "35"]
[EventDate "2018.??.??"]

1. Nd5 Rc4+ 2. Kb1 Rc1+ $1 3. Kb2 Rf2+ $1 4. Nxf2 Rb1+ $1 5. Kxb1 Qh7+ 6. g6 $1
Bxg6+ 7. Bc2 $3 bxc2+ 8. Kc1 Bxh5 9. Bxe5+ Ng7 10. Ne7 Bg4 $1 11. h4 $1 (11.
Bf4 $2 Bh3 $1 $19) 11... h5 12. Bf4 Ne8 13. Be5+ Ng7 14. Bf4 Bd7 15. Bd2 Ne6
16. Bc3+ Ng7 17. Bd2 Ba4 18. Bf4 {positional draw} 1/2-1/2

[Event "Zinchuk-80 MT, special HM"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Stavrietsky A."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "5N1k/4q3/7r/1p4b1/Qp1N4/2p5/K3R3/8 w - - 0 1"]
[PlyCount "15"]
[EventDate "2018.??.??"]

1. Ng6+ $1 Rxg6 2. Qa8+ Rg8 3. Qh1+ Qh7 4. Rh2 Bh4 $1 (4... Bh6 $1 5. Rxh6 Rg2+
6. Nc2 $1 Rxc2+ 7. Ka1 Rc1+ 8. Qxc1 $18) 5. Rxh4 Rg2+ 6. Ne2 $1 Rxe2+ 7. Ka1
Re1+ 8. Qxe1 1-0

[Event "5th Fide World Cup, 4th Prize (version)"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "1. Tarasiuk V."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "2K5/p7/kPp5/7p/1PP4p/B1r5/p4P2/8 w - - 0 1"]
[PlyCount "25"]
[EventDate "2017.??.??"]

1. b7 Rg3 $3 (1... Rf3 2. b5+ $1 Ka5 3. b8=Q a1=Q 4. Qxa7#) (1... a1=Q 2. b8=Q
Rxa3 3. Qb7#) 2. fxg3 a1=Q 3. Bb2 $3 ({Try:} 3. b8=N+ $2 Kb6 4. Nd7+ Ka6 5.
Nc5+ Kb6 6. Na4+ Ka6 $11) 3... Qxb2 (3... Qe1 4. b8=N+ $1 Kb6 5. Bd4+ c5 6.
Bxc5#) (3... Qd1 4. Kc7 $18) 4. b8=N+ $1 (4. b8=Q $2 Qh8+ $19) 4... Kb6 5. Nd7+
Ka6 6. Nc5+ Kb6 7. Na4+ Ka6 8. Nxb2 hxg3 9. Na4 $1 (9. Nd3 $2 Kb6 $1 $11) 9...
g2 10. Nc5+ Kb6 11. Nd7+ Ka6 12. Kc7 g1=Q 13. Nb8# {The b7-passer lives up to
White's hopes for success, promoting, quite unexpectedly, to knight! And the
logical bishop sacrifice 5.Bb2!! (decoying the queen) are followed by the
newly emerged rider's final 8-move-long journey ending with mate from the
promotion square! - author.} 1-0

[Event "6th Fide World Cup, 1st Prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "2. Tarasiuk V."]
[Black "WCCI 9"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/q5p1/1b2n1pk/8/7K/2R5/2pR4/1Q6 w - - 0 1"]
[PlyCount "29"]
[EventDate "2018.??.??"]

1. Qh1 $1 (1. Rh2 $2 Qb8 2. Qc1+ Kh7 3. Rcxc2 Qe5 4. Kg4+ Kg8 5. Rc8+ Kf7 6.
Qf1+ Ke7 $11) 1... Nf4 2. Rc8 Kh7 $1 (2... Qe7+ 3. Kg4+ Nh5 4. Rh8#) 3. Kg5+
Nh5 4. Rh8+ $1 Kxh8 5. Kxg6 Qa5 6. Rh2 $1 ({Try:} 6. Qe4 $2 Qg5+ $1 7. Kxg5
c1=Q 8. Qe8+ Kh7 9. Qxh5+ Kg8 10. Qe8+ Kh7 11. Qe4+ g6 $1 12. Qxg6+ Kh8 $11) (
6. Rxc2 $2 Bd8 $1 7. Qxh5+ Qxh5+ 8. Kxh5 Kh7 $1 $11) 6... c1=Q $1 7. Qxc1 (7.
Rxh5+ $2 Qxh5+ 8. Qxh5+ Qh6+ $1 $11) 7... Qa6 $1 8. Rxh5+ Kg8 9. Rh8+ $1 (9.
Qc6 $2 Qd3+ 10. Rf5 Qg3+ 11. Rg5 Qd3+ {positional draw}) 9... Kxh8 10. Qh1+ Kg8
11. Qd5+ Kh8 (11... Kf8 12. Qf7#) 12. Qd6 $1 (12. Qe6 $2 Qd3+ $19) 12... Qc8 (
12... Qa2 13. Qb8+ $1 Qg8 14. Qh2+ Qh7+ 15. Qxh7#) 13. Qh2+ Kg8 14. Qh7+ Kf8
15. Qh8+ $1 {wins. "This is a very entertaining study. White must sacrifice
both his rooks at h8. After one has recovered from the surprise, White
finishes off by the excellent quiet move 12.Qd6! The inactive black Bb6 is a
blemish, and also the initial position of the white Queen being attacked by
the black pawn c2 is a pity" - judge Harold van der Heijden.} 1-0

[Event "18th Championship of Ukraine, 1st Place"]
[Site "?"]
[Date "2016.??.??"]
[Round "?"]
[White "3. Tarasiuk V."]
[Black "WCCI 9.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/P4PPP/K1P1k3/P7/8/1nPr3n/1q2bPBB/8 w - - 0 1"]
[PlyCount "29"]
[EventDate "2016.??.??"]

1. Kb7 $3 {
Maneuver the white king from under the battery B-R under another Q-N.} (1.
f8=N+ $2 Kf6 2. g8=N+ Kf7 3. Nh6+ Ke8 4. a8=Q+ Rd8+ 5. Ka7 Rxa8+ 6. Kxa8 Qxc3
7. c7 Nxa5 8. Bb7 Bf3 9. Kb8 Bxb7 10. Ng6 Ba6 11. h8=Q+ Qxh8 12. Nxh8 Nc6+ $11)
1... Nxa5+ 2. Ka8 $1 (2. Kc7 $2 Rd7+ 3. cxd7 Qxc3+ 4. Kd8 Qf6+ 5. Kc7 Qc3+ $11)
2... Rd8+ 3. Bb8 Qb7+ $3 (3... Nc4 4. f8=Q $1 Nb6+ 5. Kb7 Nd5+ 6. Qb4 Ba6+ 7.
Kxa6 Nxb4+ 8. cxb4 Qa1+ 9. Kb5 $18) 4. cxb7 Nc4 {Threat 5.Nb6#} 5. Bxh3+ ({Try:
} 5. f8=N+ $2 Ke7 $1 6. Ng6+ Kf6 7. g8=N+ Kg5 $1 8. f4+ Nxf4 9. h8=Q Nb6#) 5...
Kd5 6. Bg2+ Bf3 $1 (6... Ke6 7. f8=N+ $1 Ke7 $1 8. Ng6+ Kf6 9. g8=N+ $1 Kg5 10.
f4+ Kxg6 11. Ne7+ $18) 7. Bxf3+ Ke6 8. Bg4+ $3 ({Try:} 8. f8=N+ $2 Ke7 $1 9.
Ng6+ Kf6 10. g8=N+ Kg5 $1 {Position A with Bf3 - (no moves 11.f4+)} 11. h8=Q
Nb6#) 8... Kd5 9. Be6+ $1 Kxe6 10. f8=N+ $1 (10. f8=Q $2 Nb6#) 10... Ke7 $1 (
10... Kf6 11. g8=N+ $1 Kg7 12. Nd7 $18) 11. Ng6+ Kf6 12. g8=N+ $1 Kg5 {
Position A without Bf3} 13. f4+ Kxg6 14. Ne7+ Kxh7 15. Nc8 $1 {wins. Promotions
of white pawns to knights to avoid smothered mate, with foresight by both
sides of activation/deactivation of the white f2-pawn which decides the
outcome of the encounter in the finale - author.} 1-0

[Event "A.Malyshko-105 MT, 1st Prize"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "4. Tarasiuk V."]
[Black "WCCI 9"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "7N/3K4/8/pp4p1/k4Ppp/8/1PP3nP/8 w - - 0 1"]
[PlyCount "27"]
[EventDate "2017.??.??"]

1. f5 g3 $1 (1... Ne3 2. f6 Nd5 {no moves 2...Ng4} 3. f7 Nf6+ 4. Ke7 Nh7 5. Ng6
$11) 2. hxg3 Ne3 (2... h3 3. f6 h2 4. f7 h1=Q 5. f8=Q Qd1+ 6. Qd6 Qxd6+ 7. Kxd6
Ne3 8. Nf7 g4 9. Ne5 b4 10. Kc5 Nxc2 11. Nxg4 Kb3 12. Ne5 $11) 3. gxh4 $3 ({
Thematic try:} 3. f6 $2 Ng4 $1 4. f7 Ne5+ 5. Kd6 Nxf7+ 6. Nxf7 h3 $1 7. Nxg5 h2
8. Ne4 h1=Q 9. Nc3+ Kb4 10. Nd5+ Kc4 11. Ne3+ Kd4 12. Nf5+ Ke4 $19 {
Position A with pg3 - (no moves 13. Ng3+)}) 3... gxh4 4. f6 Ng4 $1 5. f7 Ne5+ (
5... Nf6+ 6. Kd6 Nh7 7. Ng6 $11) 6. Kd6 $1 (6. Ke6 $2 Nxf7 7. Nxf7 h3 8. Ng5 h2
$19) 6... Nxf7+ 7. Nxf7 h3 8. Ng5 h2 9. Ne4 h1=Q 10. Nc3+ $1 ({Try:} 10. Nc5+
$2 Kb4 11. Nd3+ Kc4 12. Ne5+ Kd4 $19) 10... Kb4 11. Nd5+ Kc4 12. Ne3+ Kd4 13.
Nf5+ Ke4 {Position A without pg3} (13... Kc4 14. Ne3+ Kb4 15. Nd5+ {
positional draw}) 14. Ng3+ {draw. "A look ten moves ahead. Black providently
gets rid of his pawn, so that his knight has the time to eliminate the white
passer. And then, from the faraway corner, HE enters the play - a Cossack
knight with speedy hooves! He runs at full speed towards the black king on the
other edge of the board and ensnares him into the center, so as to catch the
crowned runaway in the bottom corner. His own pawn doesn't prevent him from
forking - White made it disappear by waving a magic wand on the third move. On
the whole, nothing but magic!" - judge Sergiy Didukh.} 1/2-1/2

[Event "J.Stigter-64 JT, 1st-2nd Prize"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "5. Tarasiuk V."]
[Black "WCCI 9"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "6N1/2p1K1p1/8/5k2/8/8/8/8 w - - 0 1"]
[PlyCount "25"]
[EventDate "2018.??.??"]

1. Kf7 $3 ({Thematic try:} 1. Kd7 $2 c5 2. Ne7+ Ke4 3. Kd6 c4 4. Nd5 Kd4 $1 5.
Nb4 g5 6. Nc2+ Kd3 7. Nb4+ Ke3 $1 8. Ke5 g4 9. Nd5+ Kf3 10. Kd4 g3 11. Ne3 Kf2
$1 12. Ng4+ Ke2 $1 $19 {Position A - (black wins)}) 1... g5 2. Ne7+ $1 ({Try:} 
2. Nh6+ $2 Ke4 $1 3. Kf6 c5 4. Kxg5 c4 5. Ng4 (5. Nf5 c3 6. Nd6+ Kd3 $1 $19)
5... c3 6. Nf2+ Kd4 $1 $19) 2... Ke4 3. Kf6 $1 g4 4. Nf5 Kf4 $1 (4... c5 5. Kg5
c4 6. Nd6+ Kd3 7. Nxc4 $1 $11) 5. Nh4 c5 (5... g3 6. Ng2+ Kf3 7. Nh4+ Ke4 8.
Kg5 c5 9. Kg4 c4 10. Kxg3 c3 11. Nf3 c2 12. Nd2+ Kd3 13. Nb3 $11) 6. Ng2+ Kf3
7. Nh4+ $1 (7. Kf5 $2 c4 $1 8. Nh4+ Ke3 9. Kxg4 c3 10. Ng2+ Kd2 $1 $19) 7...
Ke3 8. Ke5 c4 9. Nf5+ Kd3 10. Kf4 c3 11. Ne3 Kd2 $1 12. Nc4+ $1 Ke2 {
Echo-symmetry of position A} 13. Na3 {(a5) draw. "This stunning logical
malyutka (a 5 men baby study) is based on the asymmetry of the chessboard. The
solution, just like the logical try, is surprisingly accurate despite the
length of the main line. A most remarkable discovery!" - judge Yochanan Afek.}
1/2-1/2

[Event "19th Championship of Ukraine, 1st Place "]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "6. Tarasiuk V."]
[Black "WCCI 8.5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/7n/2P5/8/1b3P2/3P1pKp/2P3n1/B6k w - - 0 1"]
[PlyCount "25"]
[EventDate "2018.??.??"]

1. c7 Ng5 $1 2. fxg5 $1 (2. c8=Q $2 Be1+ 3. Kg4 f2 $19) (2. Bd4 $2 Ne6 $1 3.
c8=Q Nxd4 4. Qxh3+ Kg1 5. Qh2+ Kf1 6. Qh1+ Ke2 $19) 2... Bd6+ 3. Kf2 Bxc7 4. g6
Bb6+ 5. d4 Ne3 $1 6. Kxe3 (6. g7 $2 Ng4+ 7. Kxf3 Nf6 {(h6) =}) 6... h2 (6...
Bxd4+ 7. Bxd4 h2 8. Kf4 $1 $18) 7. Kf2 $1 ({Try:} 7. g7 $2 Bxd4+ $1 8. Bxd4 (8.
Kxd4 f2 $1 9. g8=Q f1=Q $11) 8... f2 9. Ke2 f1=Q+ $1 10. Kxf1 {- stalemate})
7... Bxd4+ $1 8. Kf1 $1 (8. Bxd4 $2 {- stalemate}) 8... Bc3 $1 9. Bb2 $3 (9.
Bxc3 $2 f2 10. Kxf2 {- stalemate}) 9... Bxb2 10. c4 Bd4 11. c5 $1 Bg1 $1 (11...
Bxc5 12. g7 $18) 12. g7 f2 13. Ke2 $1 {wins.} (13. g8=Q $2 {- stalemate. An
encounter of the two sides in which the queening of white pawns is associated
with Black's stalemate idea. To that end, Black sacrifices all of his officers,
but White twice avoids capturing the last piece, bishop. Then Black attempts
to self-stalemate that piece. However, his hopes are doomed to failure: the
white king is precise both in the middle of the play - 7.Kf2! 8. Kf1! - and on
the final move 13. Ke2! - author.}) 1-0

[Event "2nd prize, Timman-65 JT"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "1. Yarmonov I."]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "6B1/3p3p/3P3k/rN1P4/4Kp2/8/8/8 w - - 0 1"]
[PlyCount "25"]
[EventDate "2017.??.??"]

1. Nc7 $1 f3 $1 (1... Ra4+ 2. Kf3 Kg5 3. Be6 Ra3+ 4. Ke4 f3 5. Bxd7 f2 6. Bb5 {
wins}) 2. Kxf3 Kg7 3. Be6 Kf6 4. Bxd7 Ke5 5. Nb5 $1 {switchback} Kxd5 6. Bc8 $1
Ra1 7. d7 Rf1+ 8. Kg4 Rf8 9. Nc7+ Kd6 10. Ne6 $1 Rg8+ 11. Kh4 $1 (11. Kh5 $2
Ke7 {zz, draws}) 11... Ke7 12. Kh5 $1 {zz} Kd6 13. Kh6 {An enjoyable struggle
between 2 minor pieces and a rook to secure promotion decided by an original
reciprocal Zugzwang. There are plenty of surprising moments along the elegant
and entertaining solution.} 1-0

[Event "Springaren"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "(1) Amatzia Avni (ISR)"]
[Black "WCCI 8"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/1pb2P1N/q4p2/2p4R/2r5/3RK1B1/3P3P/7k w - - 0 1"]
[PlyCount "15"]
[EventDate "2017.??.??"]

1. Ng5 $3 (1. f8=Q $2 Qe6+ 2. Kf2 Qe4 $11) 1... Bf4+ $1 (1... Qa8 2. Nf3 Qf8 3.
Rd7 Bxg3 4. hxg3+ Kg2 5. Nh4+ Rxh4 6. gxh4 $18) (1... Rd4 2. Rxd4 cxd4+ 3. Kf2
Qa5 4. Nf3 Qxh5 5. f8=Q $18) 2. Bxf4 fxg5 3. f8=Q gxf4+ 4. Kf2 Qg6 $1 5. Qg8 $3
Qxg8 6. Rg3 $1 fxg3+ (6... Qf7 7. Rg1#) 7. hxg3+ Rh4 8. Rxh4# 1-0

[Event "Kondratyuk MT"]
[Site "?"]
[Date "2018.??.??"]
[Round "?"]
[White "(2) Amatzia Avni (ISR)"]
[Black "WCCI 9"]
[Result "1-0"]
[Annotator "1st Prize"]
[SetUp "1"]
[FEN "4B2N/7q/1P1k4/8/1R6/8/1P1pK3/3n4 w - - 0 1"]
[PlyCount "11"]
[EventDate "2018.??.??"]

1. b7 Nc3+ $1 2. Kxd2 Ne4+ (2... Nb1+ 3. Kc1 Qh1+ 4. Kc2 $18) 3. Rxe4 (3. Kd1
$2 Qh1+ 4. Kc2 Qg2+ 5. Kb1 Nd2+ 6. Kc1 (6. Ka2 Qd5+ 7. b3 Qa5+ 8. Ra4 Qb6 $11)
6... Nb3+ $1 7. Kb1 Nd2+ 8. Kc2 Ne4+ 9. Kb1 Nd2+ 10. Kc1 Nb3+ {perpetual check}
) 3... Qxb7 4. Nf7+ Kd5 (4... Kc7 5. Re7+ $18) 5. Bb5 $3 {
Pieces en prise defend each other indirectly.} Qxb5 (5... Kxe4 6. Nd6+ $18) (
5... Qxf7 6. Bc4+ $18) 6. Re5+ 1-0

