www.arves.org - Gatti 10 AT

Studies awarded for the

Daniele Gatti 10th Anniversary Tournament.

On December 24, 2025, it marked exactly 10 years since the publication of his first chess problem.

He therefore thought of celebrating this milestone, symbolically coinciding with the achievement of my 1000th composition.

Judged by Gatti, Daniele 1987 of course.

With this award is a free ebook given:

Computational-Monasticism-Daniele-Guglielmo-Gatti

The tournament PDF report is in the Awards Files

In the PDF report also the award for Secion B: Orthodox selfmates (S#) with 10 or more moves (Free theme) is presented.

Final Award:

[Event "GATTI 10th AT - 2nd PRIZE"] [Date "2026"] [White "Michael Pasman"] [Result "1/2-1/2"] [FEN "8/1P6/6B1/6r1/RB6/N7/6P1/1N1q1k1K w - - 0 1"] 
 {Black has mate threats like Kf2+ and Rh5+. So meantime white has no time for promotion of b7 pawn} 1. Be1 $1 {Thematic try :} (1. b8=Q $2 1. .. Kf2+ 2. Be1+ Qxe1+) (1. Bc5 $2 Rh5+) 1. .. Qxe1 (1. .. Kxe1 $4 2. Rd4 $1 Qxd4 3. Nc2+) 2. Nc2 $1 (2. Re4 $2 2. .. Qf2) ({Thematic try :} 2. b8=Q $2 2. .. Kf2+) (2. Rf4+ $2 Ke2+ 3. Kh2 Qg3+) 2. .. Qc1 {$1 î€… The threat is still Kf2+ with mate following} (2. .. Qxb1 $4 3. Ra1) 3. Ra2 $1 {Thematic try :} (3. b8=Q $2 Kf2+) 3. .. Rxg2 {White is prepared to meet} (3. .. Kf2+ {with} 4. Ne1+ $1) (3. .. Rxg6 4. b8=Q Rh6+ 5. Qh2 Kf2+ 6. Ne1+ Kxe1 7. Rd2 Rxh2+ 8. Kxh2 Qxb1 9. Rd7 $11) 4. Bd3+ $1 (4. Bh5 $2 4. .. Rg1+ 5. Kh2 Qf4+) (4. Ne3+ $2 Qxe3 5. Rxg2 Qh3+ 6. Rh2 Qf3+) 4. .. Re2 $1 (4. .. Kf2+ $4 5. Ne1+) 5. Bxe2+ {white still has no time for promotion} Kf2+ {$1 [#]} 6. Ne1 $1 (6. Bd1 $2 Qh6+) 6. .. Qxe1+ 7. Bf1+ $1 Kxf1 8. Nd2+ $1 (8. Nc3 $2 8. .. Qh4+ 9. Rh2 Qg3) ({Thematic try :} 8. b8=Q $2 Qe4+ 9. Kh2 Qh4#) 8. .. Kf2+ 9. Nf1+ $1 Kxf1 10. Ra1 {$1 sacrifices the last piece} {Thematic try :} (10. b8=Q $2 Qe4+ 11. Kh2 Qh4#) 10. .. Qxa1 {White sacrificed all of his pieces and now remains just with one pawn. All the pieces were sacrificed on the first rank} 11. b8=Q {The pawn could be promoted from the first move, but is promoted only now, while all other white pieces have been sacrificed} Kf2+ 12. Kh2 Qg1+ 13. Kh3 1/2-1/2

[Event "GATTI 10th AT - 3rd PRIZE"] [Date "2026"] [White "Frank Fiedler & Brigitte Blechschmidt"] [Result "1-0"] [FEN "7R/2p1p3/p1PbP3/P1pKp3/p1P1P3/P3k3/6P1/5n2 w - - 0 1"] 
 {[%evp 0,49,798,1038,1240,1240,1668,1712,3499,29406,29957,29958,29959,29960, 29961,29962,29963,29964,29965,29966,29967,29968,29969,29970,29971,29972,29973, 29974,29975,29976,29977,29978,29979,29980,29981,29982,29983,29984,29985,29986, 29987,29990,29991,29992,29993,29994,29995,29996,29997,29998,29999,-30000]} { Theme: Bishop underpromotion} 1. Rh3+ $1 (1. g4 $2 Nd2 $1 2. g5 Nxe4 $1 { threatens Nc3#} 3. Rh3+ Kf4 4. Rh4+ Kf5 5. Rxe4 Kxg5 6. Re1 Kf4 7. Rf1+ Ke3 8. Rf8 e4 {draw, e. g.} 9. Rf1 Ke2 10. Rb1 Ke3 {or Kd3 or Kf3} 11. Re1+ Kf3 12. Rf1+ Ke2 13. Rf7 Kd3 14. Rf3+ e3 15. Rxe3+ Kxe3 {stalemate}) (1. Rh1 $2 Nd2 $11 (1. .. Ng3 $11)) (1. Rf8 $2 Nd2 $11 (1... Nh2 $11)) (1. Rd8 $4 Ke2 2. Rxd6 Ne3+ $19) 1... Kf2 {or Kd2 or Ke2} (1... Kf4 2. Rf3+ $18) 2. g4 (2. Rf3+ $2 Kxg2 { draw}) 2... Ne3+ (2... Kg2 3. Rd3 $18 (3. Rc3 $18)) 3. Rxe3 Kxe3 4. g5 Kf4 ( 4. .. Kd2 {or Kd3} 5. g6 Kc3 6. g7 Kb3 {or Kb2} 7. g8=Q $18 {e. g.} Kxa3 8. Qc8 Kb2 9. Qxa6 a3 10. Qb5+ Ka1 11. a6 a2 12. Qa4 Kb1 13. a7 a1=Q 14. Qxa1+ Kxa1 15. a8=Q+ Kb2 16. Qd8 Kc3 17. Qxd6 $18) 5. g6 Kg5 6. g7 Kf6 7. g8=B $1 (7. g8=Q $2 {stalemate}) (7. g8=N+ $2 Kg6 8. Nh6 Kxh6 {stalemate}) 7. .. Kg5 (7. .. Kg7 8. Bf7 Kf8 9. Bh5 $18) 8. Bf7 (8. Bh7 $2 Kf4 9. Bg6 Ke3 10. Bh5 (10. Be8 Kd2 11. Bd7 Kc3 12. Bc8 Kb3 13. Bxa6 Kxa3 14. Bb5 Kb3 15. Bxa4+ Kxa4 16. a6 Ka5 17. a7 Kb6 18. a8=B {draw} (18. a8=Q $2 {stalemate}) (18. a8=N+ Ka6 {Black wins})) 10. .. Kd2 11. Bg4 Kc3 12. Bd1 Kb2 13. Bxa4 Kxa3 14. Bb5 Kb4 15. Bxa6 Kxa5 $11) 8. .. Kf4 9. Be8 Ke3 {switchback (cf. move 3)} 10. Bd7 Kd2 {or Kd3} 11. Bc8 Kc3 {or Kc2} 12. Bxa6 Kb3 {or Kb2} 13. Bb5 Kxa3 14. a6 (14. Bxa4 $2 Kxa4 15. a6 Ka5 16. a7 Kb6 17. a8=B {draw} (17. a8=Q $2 {stalemate}) (17. a8=N+ $2 Ka5 18. Nxc7 Bxc7 19. Kxc5 Bb8 $19)) 14. .. Kb2 15. Bxa4 {win; unique move sequence until here, and further, e. g.} (15. a7 $2 a3 16. a8=Q a2 $11) 15. .. Ka3 16. Bd1 Kb2 17. a7 Kc1 18. Ba4 Kb2 19. a8=Q Kc3 20. Qf8 Kb4 21. Qf2 Ka5 (21. .. Kxa4 22. Qb2 Ka5 23. Qb5#) 22. Qd2+ Kb6 23. Qb2+ Ka6 24. Qb5+ Ka7 25. Qb7# 1-0

[Event "GATTI 10th AT - 4th PRIZE"] [Date "2026"] [White "Oleg Pervakov"] [Result "1-0"] [FEN "8/4NP2/1Npn4/1q6/2bPk3/4P1K1/p7/2BB4 w - - 0 1"] 
 1. Nbd5!  (1.f8=Q? Qg5+ 2.Kf2 (2.Bg4 Be2!) 2. ..Qh4+ 3.Kg2 Qg5+) 1. ..Nf5+ (1...a1=Q 2.Bc2+ Bd3 3.Nf6#)  2.Kf2 (2.Nxf5? Qb8+)  2....Nxe3! (2...Nxe7 3.f8=Q)  3.Bc2+! (3.f8=Q? Nxd1) (3.Bf3+? Kd3! 4.Be2+ Kc2! 5.Nxe3+ Kxc1=)  3...Nxc2 4.f8=Q Kxd4! (4...Bxd5 5.Qf4+ Kd3 6.Qd2+ Kc4 (6...Ke4 7.Nc8!) 7.Qxc2+ Kb4 8.Bd2+ Ka3 9.Nxd5! Qxd5 (9...cxd5 10.Bc1+ Kb4 11.Qxa2) 10.Qc3+ Ka4 11.Qb4# {First model mate}) (4...cxd5 5.Qf4+ Kd3 6.Qd2+ Ke4 7.Qxc2+ Kxd4 (7...Bd3 8.Qc7) 8.Be3+ Ke5 9.Qf5+ Kd6 10.Nc8+ Kc7 11.Bf4+ Kd8 12.Qf8+ Qe8 13.Bg5+ Kd7 14.Nb6+)  5.Qf6+! {you must block a3-square} {Logical try:} (5.Qf4+? Kc5 6.Nf5 Qa5! 7.Be3+ (7.Ba3+ Qxa3! 8.Qd6+ Kb5 9.Nd4+ Nxd4 10.Qxa3 cxd5) 7...Nxe3 8.Qd6+ Kb5 9.Nd4+ Ka4! 10.Qxc6+ Ka3=) (5.Nf5+? Kd3! 6.Nf4+ Kc3 7.Qf6+ Kb4 =) 5...Kc5 6.Ba3+ Nxa3 7.Nf5 Qa5! {(Best defense. Otherwise mate or loss of Queen)} (7...Kxd5 8.Qd6+ Ke4 9.Ng3# {Second model mate}) (7...Bxd5 8.Qd4#) (7...cxd5 8.Qd6#) (7...Qb2+!? 8.Qxb2 Nc2 9.Qb6+ Kxd5 10.Ne3+! Nxe3 11.Qd8+! Ke4 12.Qe7+ Kd3 13.Qxe3+ Kc2 14.Qd4 Kb1 15.Qd1+ Kb2 16.Qd2+! Kb1 17.Qb4+ Kc2 18.Qxc4+) (7...Qb8 8.Qd4+! Kb5 9.Qb2+ {Skewer}) (7...Qb1 8.Qd4+ Kb5 9.Qb6+ Ka4 10.Nc3#) 8.Qd6+ Kb5 9.Nd4+ Ka4! (9...Ka6 10.Qxc6+ Ka7 11.Qd7+ Ka6 12.Qc8+! Ka7 13.Nc6#) 10. Qxc6+ Bb5 11.Nc3+! {The main plan must be started by first eliminating the pawn a2} (11.Nb6+? Qxb6!=) 11...Kb4 12.Nxa2+ Ka4 13.Nc3+ (13.Qc1? Qa7! {Pin} 14.Nc3+ Kb4 15.Nd5+ Ka4 16.Qd1+ Ka5 17.Qe1+ Ka6) 13...Kb4 14.Nd5+ (14.Qe6? Ba4! 15.Na2+ Kc5 16.Qe5+ Kb6 17.Qd6+ Kb7 18.Qxa3 Qd2+ 19.Ne2 Bb5=) 14...Ka4  15.Nb6+ {Time. White Knight is back on route b6-d5-c3-a2-c3-d5-b6!} 15...Kb4 16.Qd6+ Kc3 17.Qf6 {! Crucial battery. White Queen also is back on route f6-d6-c6-d6-f6!} 17...Kd3 {Away from the a1-h8 diagonal!} (17...Kb4 18.Qe7+! Kc3 19.Qe1+ {Another skewer}) {But} 18.Qf3+ Kxd4 19.Qe3# {Third model mate} 1-0

[Event "GATTI 10th AT - 6th PRIZE"] [Date "2026"] [White "Peter Boll & Sergey Osintsev"] [Result "1/2-1/2"] [FEN "6kB/3r4/8/p7/r6R/2p3p1/6P1/3R3K w - - 0 1"] 
 1. Bd4 $1 (1. Rxa4 $4 Rxd1#) 1... c2 2. Rh8+ (2. Rg4+ $2 Kh7 $1 $19) 2... Kf7 3. Rf1+ Ke6 4. Bb2 (4. Re8+ $2 Kd5 $19) (4. Re1+ $2 Kd5 $19) 4... Rd1 (4... Rb4 5. Bc1 Rd1 6. Re8+ Kd7 7. Ree1 Rbd4 8. Kg1 a4 9. Re2 Rh4 10. Ree1 Rhd4 11. Re2 $11 {Positional draw with the black Rook on the fourth rank}) 5. Re8+ Kd7 6. Ree1 Rad4 7. Kg1 $1 ({Thematic try} 7. Bxd4 $2 {counterplay to stalemate} c1=Q 8. Rf7+ Kc6 9. Rf6+ Kb5 $1 ({No} 9... Kd5 $2 10. Bg1 Rxe1 11. Rd6+ (11. Rf5+) 11... Kxd6 $11 {stalemate with the Bishop pin}) 10. Bg1 Qc4 $1 ({No} 10... Qc7 $2 11. Rb6+ $1 Qxb6 (11... Ka4 12. Re4+ {check} Ka3 $11) 12. Re5+ Ka6 13. Rxa5+ $1 Kb7 14. Ra7+ Kc6 15. Rc7+ Kb5 16. Rc5+ Qxc5 $11 { stalemate with the Bishop pin}) 11. Rb6+ Ka4 12. Re4 {without check} Rxg1+ $1 ( {No} 12... Qxe4 $2 13. Rb4+ $1 Qxb4 $11 {stalemate with the Bishop pin}) 13. Kxg1 Qxe4 $19) 7... Rd6 ({main line} 7... R4d3 8. Re2 $1 ({loss of tempo} 8. Bc1 $2 a4 9. Re2 Rc3 10. Ree1 Rxe1 11. Rxe1 { Position A1 with bRc3 - there is a move 11...a3} a3 12. Kf1 a2 $19) 8... Rc3 $1 (8... R3d2 9. Rxd2+ Rxd2 10. Re1 Rd1 11. Kf1 Rd2 $11) 9. Ree1 Rcd3 (9... Rxe1 10. Rxe1 Rb3 11. Bc1 $11) 10. Re2 $11 { Positional draw with the black Rook on the third rank}) ({main line} 7... R4d2 8. Bc1 Rd3 9. Re2 {Positional draw with the black Rook on the third rank} Rc3 10. Ree1 (10. Re4) 10... Rcd3 11. Re2 $11) 8. Bc1 ({Thematic try} 8. Re2 $2 Re6 $1 9. Rxc2 Ree1 10. Rd2+ Rxd2 11. Rxe1 Rxb2 12. Kf1 Rf2+ $1 (12... Kc6 $2 13. Re3 Kc5 14. Rxg3 a4 15. Ke1 Kb4 16. Kd1 $11) 13. Kg1 Ra2 14. Kf1 a4 15. Re3 Ra1+ 16. Ke2 a3 17. Rxg3 a2 18. Ra3 Rg1 19. Rxa2 Rxg2+ $19 {skewer}) ({ Thematic try} 8. Ba3 $2 {Loss of tempo.} R6d3 $1 9. Bc1 a4 10. Re2 Rc3 11. Ree1 Rxe1 12. Rxe1 {Position A1 with bRc3 - there is a move 12...a3} a3 13. Kf1 a2 $19) 8... a4 9. Re2 (9. Rf7+ $2 Kc6 $1 $19) 9... Rc6 10. Ree1 { Position B with wRe1} ({Thematic try} 10. Re3 $2 Re6 $1 11. Rxg3 Ree1 { Position B1 with bRe1. The black and white Rooks have swapped places!} 12. Rgf3 Rxc1 $19) 10... Rcd6 11. Re2 Rf6 12. Ree1 $1 (12. Rfe1 $2 Rf2 $19) 12... Rfd6 ( 12... Rxe1 13. Rxe1 $11 {Position A with bRf6 - no move 13...a3}) 13. Re2 $11 { Positional draw with the black Rook on the sixth rank. Game without captures!}

[Event "GATTI 10th AT - 8th PRIZE"] [Date "2026"] [White "Mario Micaloni"] [Result "1/2-1/2"] [FEN "8/1P2p2P/3bP3/8/2b5/p1K4Q/4ppnp/1k6 w - - 0 1"] 
 1. Qf5+ (1. b8=Q+ {? Thematic Try} Bxb8 {!} 2. Qf5+ (2. Kxc4 e1=N {!!!} 3. Qb3+ Kc1 {!} 4. h8=Q f1=Q+ {! -+}) 2. .. Ka1 {!} 3. h8=Q h1=R {!!} 4. Qd4 Ba7 {!! -+}) 1. .. Ka1 (1. .. Ka2 2. Qc2+ {! Draw}) 2. h8=Q h1=R {!!} (2. .. h1=Q 3. b8=Q {!} Bxb8 4. Kd2+ {!} Qxh8 5. Qb1+ {! Forces stalemate = =}) 3. Qd4 {!!} (3. b8=Q {?} Bxb8 {!} 4. Kd2+ Rxh8 {!} 5. Qb1+ Kxb1 {not stalemate -+}) 3. .. Rh4 (3. .. Ne3 4. Kd2+ {!} Ka2 5. Qc2+ {!} Nxc2 6. Qxc4+ {!} Ka1 7. Qc3+ {! Perpetual check = =}) 4. Qfxf2 {!} (4. Qdxf2 {?} 4. .. e1=Q+ {!} 5. Qxe1+ Nxe1 {! -+}) (4. Kxc4+ {?} 4. .. Rxd4+ {! -+}) (4. b8=Q {? Thematic Try} f1=Q {!} 5. Qxf1+ exf1=R {!!} (5. .. exf1=Q {?} 6. Qd1+ {!!} Qxd1 7. Qb2+ {!! Forces stalemate}) 6. Qd1+ Rxd1 {!} 7. Qb2+ axb2 {Not stalemate -+}) 4. .. Rxd4 5. Qxd4 Kb1 6. Qe4+ Ka1 7. Qd4 e1=Q+ 8. Kc2+ Ka2 9. Qxc4+ Ka1 10. Qd4+ Ka2 11. Qc4+ {perpetual check} *

[Event "GATTI 10th AT - 1st SPECIAL PRIZE"] [Date "2026"] [White "Serhiy Didukh"] [Result "1-0"] [FEN "8/4p3/2p1p1p1/2p1P3/B1Kp2p1/p1P5/3P1P1P/k7 w - - 0 1"] 
 {The Pe7 was the last piece added by Daniele Gatti in his study with the Babson task. The pawn made the solution correct and the position remained legal. Thus an impossible task has been achieved in a study for the first time. The Pe7 is the most dangerous of all black pawns in my study. White has to stop its promotion.} 1. Kb3 g3 $1 {This early sacrifice makes White calculate 10 moves ahead.} 2. hxg3 $1 ({Logical try} 2. fxg3 $2 a2 3. Kc2 d3+ 4. Kc1 c4 5. Bd1 g5 6. Bg4 c5 7. Bxe6 g4 8. Bxc4 e6 9. Bxd3 c4 10. Bf5 exf5 11. e6 f4 12. e7 f3 $1 13. e8=Q f2 14. Qe2 f1=Q+ {(excelsior)} 15. Qxf1 {stalemate.}) 2... a2 3. Kc2 d3+ 4. Kc1 c4 $1 {(stopping Bb3). Now a funny part of the study - the bishop's dance to prevent stalemate.} 5. Bd1 g5 6. Bg4 c5 7. Bxe6 g4 8. Bxc4 e6 9. Bxd3 (9. Bd5 $2 c4 $11 {zz}) 9... c4 10. Bf5 $1 exf5 11. e6 f4 12. e7 f3 13. d3 $18 1-0

[Event "GATTI 10th AT - 3rd SPECIAL PRIZE"] [Date "2026"] [White "Sergey Osintsev"] [Result "1-0"] [FEN "b7/8/3ppn1B/Q4p2/2k1p2b/4Pr2/1p1K4/1R2n3 w - - 0 1"] 
 1. Qc7+ $1 (1. Qa2+ $2 Kc5 2. Qa7+ Kc6 $6) (1. Qc3+ $2 Kd5 2. Qa5+ Kc6 $3 3. Qxa8+ Kc7 4. Rxb2 Rf2+ 5. Kc3 Nd5+ 6. Kb3 Rxb2+ 7. Kxb2 Nd3+ $11) 1... Kd5 2. Rxb2 (2. Bf8 $2 Rf2+ 3. Kd1 Nc2 4. Qa5+ $11) (2. Qa5+ $2 Kc6 $1 $11) 2... Rf2+ (2... Nd3 3. Rb5+ Nc5 4. Bf8 $18) 3. Kc3 Ke5 $1 (3... Rxb2 4. Qc4+ Ke5 5. Qd4# (5. Bf4#)) 4. Rb5+ (4. Rd2 $2 Nd3 5. Qa7 $11) 4... Nd5+ 5. Rxd5+ $1 (5. Kb3 $2 f4 $1 6. Qh7 fxe3 7. Bxe3 Rf3 8. Qh5+ Kf6 9. Qxh4+ Kf7 10. Qh7+ Kf6 $11) 5... Bxd5 (5... exd5 6. Qf7 $1 Rc2+ 7. Kb3 (7. Kb4 $2 Nd3+ 8. Kb3 Rg2 9. Qe8+ Kf6 10. Qxa8 $11)) (5... Kxd5 6. Qc4+ Ke5 7. Qd4#) 6. Qg7+ (6. Bg7+ $2 Bf6 7. Qf7 Rc2+ 8. Kb4 Rb2+ $11) (6. Bf4+ $2 Kf6 7. Qd8+ Kf7 8. Qxh4 $11) 6... Bf6 7. Bf4+ $1 (7. Qg3+ $2 f4 8. Qxf2 Kf5+ 9. Kd2 $11) 7... Rxf4 8. Qa7 $1 Nc2 $1 (8... Be7 9. Qd4#) 9. Qd4+ $1 Nxd4 10. exd4# $1 {A ideal mate with one pawn. All the squares around the black King are blocked by black pieces. This is a first. Three black pieces and both Kings have come to their place.} *

[Event "GATTI 10th AT - 3rd HONORABLE MENTION"] [Date "2026"] [White "Branislav Djurasevic"] [Result "1-0"] [FEN "7B/q3p2Q/2Bpk3/8/1p2P3/1P6/3Kp3/8 b - - 0 1"] 
 {White is significantly superior and threatens three checkmates 1.Qf5/g6/g8#, so Black must check the white king and hoping for perpetual checks. Black has objectively only three active moves: 1....Qa2 (the first main line), 1.... Qe3+ (the second main line) and additional attempt 1...e1Q+.} 1... Qa2+ (1... Qe3+ 2. Kc2 $3 {One more spectacular move on the very beginning play in another main line.} (2. Kxe3 $2 e1=Q+ $11 {As it was shown in the thematic try of the first main line 1...Qa2+! white could not escape from the perpetual check on both king and queen sides.} 3. Kd3 (3. Kf3 Qf1+ 4. Kg4 Qg2+ $11) 3... Qd1+ $1 4. Kc4 Qc2+ $11) (2. Ke1 $2 Qc1+ $1 $11 (2... Qg1+ $2 3. Kxe2 $18)) 2... Qc5+ (2... e1=N+ 3. Kd1 $1 (3. Kb1 $2 Qxb3+ 4. Bb2 Qd3+ 5. Ka2 Qc4+ 6. Ka1 Qa6+ 7. Kb1 Qd3+ $11) 3... Qd3+ 4. Kxe1 Qe3+ 5. Kd1 $1 Qd3+ 6. Kc1 Qe3+ 7. Kc2 Qe2+ 8. Kb1 $18 {Position A.} Qf1+ 9. Ka2 Qa6+ 10. Ba4 Qe2+ 11. Bb2 {Both white bishops actively protect the king on the queen's side.}) (2... Qc1+ 3. Kxc1 e1=Q+ 4. Kc2 Qe2+ 5. Kb1 $18 {etc, Position A.}) 3. Kb2 (3. Kd3 Qe3+ { Waste of time}) 3... Qg5 $5 4. Qh3+ $1 Kf7 5. Qf3+ $1 (5. Bd5+ $2 Kg6 $1 $11) 5... Kg8 6. Qxe2 {White queen plays actively.}) (1... e1=Q+ {A less favorable option.} 2. Kxe1 Qe3+ 3. Kd1 $1 (3. Kf1 $2 Qc1+ $1 $11) 3... Qd3+ 4. Kc1 Qe3+ 5. Kc2 Qe2+ 6. Kb1 $18 {etc. Position A.}) 2. Bb2 $3 {The mysterious sacrifice, whose effect will only be visible ten moves later, is a typical example of the annihilation theme. This move is the highlight of the study!} ({Thematic try:}  2. Ke1 $2 Qb1+ 3. Kxe2 Qc2+ 4. Kf3 (4. Ke3 Qc1+ $1 5. Kd3 Qd1+ $1 6. Kc4 Qc2+ 7. Kxb4 Qc5+ 8. Ka4 Qa7+ 9. Kb5 Qc5+ $11 {Perpetual check on queen's side.}) 4... Qd1+ 5. Kf4 Qd2+ 6. Kg4 Qg2+ 7. Kh5 Qh3+ 8. Kg6 Qg4+ 9. Kh6 Qf4+ $1 (9... Qh4+ $2 10. Kg7 Qf6+ 11. Kg8 $18) 10. Kg7 Qf7+ 11. Kh6 Qf4+ $11 {Perpetual check on king's side. To summarize, in the thematic try the white king is not safe and cannot escape from the perpetual check on both (queen's or the king's) sides.}) 2... Qxb2+ 3. Ke1 Qc1+ 4. Kxe2 Qc2+ 5. Kf3 Qd1+ 6. Kf4 Qd2+ 7. Kg4 Qg2+ 8. Kh5 Qh3+ 9. Kg6 Qg4+ 10. Kh6 Qf4+ 11. Kg7 Qf7+ 12. Kh8 $3 {It is the only place on the board where the white king can hide from perpetual check!} 1-0

[Event "GATTI 10th AT - 6th HONORABLE MENTION"] [Date "2026"] [White "Gonzalez, Luis Miguel"] [Result "1-0"] [FEN "7k/3b2p1/5PP1/3n4/2K3Pb/5P2/p1P1B3/1n2R3 w - - 0 1"] 
 1. f7 Nb6+ $1 2. Kc5 $1 (2. Kd3 $2 Bb5+ $1 3. Ke4 Bc6+ 4. Kf5 Bd7+ {$11 perpetual check}) 2. .. Bf2+ 3. Kd6 Bg3+ 4. Ke7 $1 {Thematic try:} (4. f4 $2 Bxf4+ 5. Ke7 Bg5+ 6. Kd6 Bf4+ 7. Kc5 Be3+ 8. Kb4 Bd2+ 9. c3 $1 Bxc3+ 10. Kb3 $1 (10. Kc5 Bd4+ $1 11. Kd6 Be5+ $1 12. Ke7 Bf6+ 13. Kd6 (13. Kf8 {$2 without f3-pawn!} Bc6 {$1 $19}) 13. .. Be5+ $11) 10. .. Be6+ 11. Kc2 Bxe1 $1 12. f8=Q+ Bg8 13. Qd6 Bd2 14. Qh2+ Bh6 15. Kb2 Na4+ 16. Ka1 Nbc3 $1 17. g5 Nc5 $1 18. Bd1 Nxd1 19. gxh6 Nc3 $1 20. hxg7+ Kxg7 21. Qe5+ Kxg6 22. Qg3+ Kf5 $1 23. Qf3+ Kg6 $1 24. Qg3+ Kf5 25. Qxc3 Ne4 26. Qf3+ Ke5 27. Qh5+ Kf4 $1 28. Qh2+ Kf5 {$1 $11 positional draw}) 4. .. Bh4+ 5. g5 $1 Bxg5+ 6. Kd6 $1 Bf4+ 7. Kc5 Be3+ (7. .. Na4+ 8. Kd5 $1 Nbc3+ 9. Kd4 Nxe2+ 10. Kd5 $1 Nac3+ (10. .. Nb6+ 11. Kc5 Be3+ 12. Kb4 Nd5+ 13. Kc4 Nb6+ 14. Kd3 $18) 11. Kc5 Na4+ 12. Kb4 Bd6+ 13. Ka5 a1=Q 14. Rxa1 Ng3 15. Re1 $18) 8. Kb4 Bd2+ 9. c3 $1 (9. Kb3 $2 Be6+ $1 10. c4 Nd7 11. Rh1+ Bh6 12. Kb2 Nf8 $11) 9. .. Bxc3+ 10. Kc5 $1 (10. Kb3 $2 Be6+ 11. Kc2 Bxe1 $1 12. f8=Q+ Bg8 13. Qd6 Bd2 14. Qh2+ Bh6 $11) 10. .. Bd4+ $1 11. Kd6 $1 Be5+ $1 12. Ke7 $1 Bf6+ 13. Kf8 {$1 with f3-pawn!} Bh3 14. Rh1 Nd7+ 15. Ke8 Bg5 16. Rxh3+ 1-0

[Event "GATTI 10th AT - 7th HONORABLE MENTION"] [Date "2026"] [White "Vladislav Tarasiuk"] [Result "1-0"] [FEN "2n3B1/5p2/1b2qP2/2Pnpk1b/2P2P1K/2P5/2N1P3/2Q5 w - - 0 1"] 
 1. Bh7+ $1 {Try:} (1. e4+ $2 Kxe4 $1 (1. .. Kxf6 $2 2. f5 $1 Qe8 3. Qg5#) 2. Bh7+ Bg6 {draw.}) 1. .. Bg6 (1. .. Kxf6 2. f5 {$1 $18}) 2. Bxg6+ fxg6 {$1 The best move, but the black pawn blocked the square for its king.} {Loses immediately} (2. .. Kxg6 3. Qg1+ Kh7 4. Qg7#) (2. .. Kxf6 3. cxd5 Qxd5 4. cxb6 fxg6 5. Qe3 $18) 3. cxd5 Qxf6+ 4. Kg3 Bxc5 5. Nd4+ $1 {Misses a win} (5. Ne3+ $2 Bxe3 6. Qxe3 Nd6 7. c4 e4 $19) 5. .. Bxd4 (5. .. exd4 6. Qb1+ d3 7. Qxd3#) 6. cxd4 Nd6 $1 (6. .. Ke4 7. dxe5 {$1 $18}) 7. fxe5 $1 {Thematic try:} (7. dxe5 $2 Ne4+ 8. Kf3 Qh8 {$1 draw. Position X with Pf4, without Pd4 - no 9. Qf4#}) 7. .. Ne4+ 8. Kf3 Ng5+ $1 {main} (8. .. Qh8 {Position X without Pf4, with Pd4 -} 9. Qf4#) (8. .. Qh4 9. Qc8+ Kg5 10. Qd8+ $18) 9. Qxg5+ $1 (9. Kg3 $6 Ne4+) 9. .. Qxg5 {Blocking of the second square for the Black king.} 10. e4# {$1 Premature pawn advance is a mistake: the move 1. e4? is just an illusion. The pawn move will become the final mating blow after the center of the board is controlled by the remaining pawns. In the final, an ideal checkmate with four pawns in the center of the board with two active blocked squares.} 1-0

[Event "GATTI 10th AT - 1st SPECIAL HONORABLE MENTION"] [Date "2026"] [White "Volker Hergert"] [Result "1/2-1/2"] [FEN "8/6n1/6p1/5p1p/4p2P/B3P1PK/3k1P2/8 w - - 0 1"] 
 1. Kg2 $1 (1. Be7 $2 Ke1 $1 2. Kg2 Ke2 $19 {mutual zugzwang}) (1. Bb2 $2 Ne6 2. Kg2 Ke2 $19) 1... Ke2 2. Be7 $1 {White should not allow the knight to reach any of the key squares d1, d3 or g4. This is a situation of mutual zugzwang and from here onwards it‘s all about corresponding squares between bishop and knight in ongoing zugzwangs for Black.} Ne8 (2... Ne6 3. Bd6 $10) 3. Bd8 Nd6 4. Bf6 Nc8 (4... Nc4 5. Bd4 Na5 (5... Nd2 6. Bb2 Nf3 7. Bc3 $11) 6. Bc5 Nc6 (6... Nb3 7. Ba3 $11) 7. Bd6 $11) (4... Nb5 5. Be5 Na7 6. Bc7 $11) (4... Nf7 5. Bg7 $10) 5. Bd8 Na7 6. Bc7 Nc6 7. Bd6 Na5 8. Bc5 Nb3 9. Ba3 Nd2 10. Bb2 Nf3 11. Bc3 {The solution explores 14 corresponding squares between bishop and knight: g7/e7, e6/d6, e8/d8, d6/f6, c8/d8, c4/d4, b5/e5, f7/g7, a5/c5, d2/b2, c6/d6, b3/a3, f3/c3, and a7/c7!} Ne1+ {Finally breaking the series of zugzwangs and corresponding squares, but the pawns endgame is also a draw.} 12. Bxe1 Kxe1 13. Kg1 Ke2 14. Kg2 $11 1/2-1/2

[Event "GATTI 10th AT - 3rd SPECIAL HONORABLE MENTION"] [Date "2026"] [White "Volker Hergert"] [Result "1-0"] [FEN "8/8/4k2P/8/1nn5/n7/8/3K3B w - - 0 1"] 
 {[#]} 1. h7 Nd3 $1 {Threatens the fork on f2.} 2. Ba8 $3 (2. h8=Q $2 Nf2+ 3. Ke2 Nxh1 4. Qxh1 Nb5 5. Qe4+ Ne5 $11) (2. Bc6 $2 Ne3+ 3. Kd2 Nac4+ (3... Ne5 4. Be8 Nac4+ $11) 4. Kc3 Nde5 $11) (2. Ke2 $2 Nf4+ 3. Kf2 Ng6 $11) 2... Ne3+ (2... Ncb2+ 3. Kd2 Nbc4+ {same position as main line}) 3. Kd2 (3. Ke2 $2 Nf4+ 4. Kxe3 Ng6 $11) 3... Nec4+ (3... Ne5 4. h8=Q $18) (3... Nac4+ 4. Kc3 $1 $18 {and the pawn will promote soon}) 4. Kc3 $1 (4. Kxd3 $2 Ne5+ $11 {as the knight stops the pawn}) (4. Kd1 Ne3+ 5. Kd2 {waste of time}) 4... Nb5+ $1 {the additional possibility compared to 3...Nac4+} 5. Kc2 $1 (5. Kxd3 $2 Ne5+ $11) (5. Kxc4 $2 Ne5+ $11 {or 5...Nd6+ (=)}) (5. Kb3 Nd4+ 6. Kc3 Nb5+ {waste of time}) 5... Nba3+ (5... Nd4+ 6. Kb1 Nd2+ 7. Ka2 Nc1+ 8. Kb2 Nd3+ 9. Kc3 Ne5 10. h8=Q $18) (5... Nb4+ 6. Kb3) 6. Kb3 $1 (6. Kc3 Nb5+ {loss of time}) (6. Kd1 Ne3+ 7. Kd2 Nec4+ 8. Kc3 Nb5+ {loss of time}) (6. Kxd3 $2 Ne5+ $11) 6... Nc5+ 7. Kc3 (7. Kb4 Nd3+ 8. Kb3 {loss of time}) (7. Ka2 Nd3 $1 8. Kb3 $1 {loss of time} (8. h8=Q $2 Nc1+ 9. Ka1 Nb3+ 10. Ka2 Nc1+ $11)) 7... Nb5+ $1 8. Kc2 $1 (8. Kb4 Nd3+ 9. Kb3 $1 {waste of time} (9. Kxb5 $2 Nd6+ 10. Ka5 Nf7 $11)) (8. Kxc4 $2 Nd6+ 9. Kxc5 Nf7 10. Bd5+ Kf6 11. Bxf7 Kg7 $11) 8... Nc7 (8... Nba3+ 9. Kd1 $18) (8... Nd4+ 9. Kb1 $18) (8... Nb6 9. Bg2 $18 {or 9.Bh1 +-}) 9. Bh1 $3 {switchback} (9. Bc6 $2 Ne5 10. h8=Q Nxc6 $11) (9. Bf3 $2 Ne5 10. Bh5 (10. h8=Q Nxf3 $11) 10... Nf7 11. Bxf7+ Kxf7 $11) (9. Bg2 $2 Ne3+ $11) 9... Kf7 {Black has no sensible checks anymore, and so, finally, White can promote the pawn successfully.} 10. h8=Q 1-0

[Event "GATTI 10th AT - 1st COMMENDATION"] [Date "2026"] [White "Thomas Niessen"] [Result "1-0"] [FEN "3R4/3p4/8/2p1P3/kpp5/P3P2K/1P5b/8 w - - 0 1"] 
 1. e6 {$1 Make a future c-pawn a passed pawn.} (1. Kxh2 $2 1. .. c3 2. bxc3 bxc3 3. e6 dxe6 4. Rd3 Kb3 5. a4 c4 6. Rxc3+ Kxc3 $11) (1. axb4 $2 Bxe5 2. bxc5 Bxb2 3. Rxd7 c3 $11) 1. .. dxe6 2. axb4 Bg1 (2. .. Be5 3. bxc5 Kb5 4. Rc8 c3 5. bxc3 Bxc3 $18) 3. bxc5 Kb5 4. Re8 $1 (4. Rc8 $2 Bxe3 5. c6 Kc5 6. Kg4 Bd2 7. Kf3 Ba5 $1 8. Ke4 c3 9. bxc3 Bxc3 {$11 See (X) below.}) 4. .. Bxe3 5. c6 $1 Kb6 6. Kg4 Bd4 (6. .. Bc1 7. Rc8 Bd2 8. Kf3 c3 9. bxc3 Bxc3 10. Kf4 {see main.}) 7. Rc8! Be5 (7. .. c3 8. bxc3 Bxc3 9. Kf4 {see main.}) (7. .. Kc5 8. c7 Be5 (8. .. Kc6 9. Rd8) 9. Kf3 Kc6 10. Ke4 Bxc7 11. Kd4 $18) 8. Kf3 c3 (8. .. Kc5 9. c7 Kc6 (9. .. Bd6 10. Ke3 (10. Ke4 $2 e5 $11) 10. .. e5 11. Kd2 Kc6 12. Kc3 {$18 e.g.} Kc5 13. Rd8 Bxc7 14. Rc8 Kd6 15. Kxc4) 10. Ke4 Bxc7 11. Kd4 $18) 9. bxc3 Bxc3 {With a passive rook and a cut-off king, White still has something to prove. Surprisingly, the long diagonal turns out to be too short for the bishop.} 10. Kf4 {$1 zz} (10. Ke4 $2 Kc5 {$11 zz (X)} 11. Rd8 Ba5 12. Rc8 Bc3 13. Rg8 Kd6 14. Rd8+ Kc7 15. Re8 Be1 16. Rxe6 Bg3 {Del Rio's draw setup.}) 10. .. Ba1 (10. .. Kc5 11. Ke4 {zz} Kd6 12. Kd3 {and Kc4-b5 etc}) 11. Ke4 Bg7 (11. .. Bc3 12. Re8 Kc7 13. Rxe6 Be1 14. Rg6 $18) 12. Rg8 Ba1 (12. .. Bc3 13. Re8 {see main.}) (12. .. Bf6 13. Re8 Kc7 14. Rxe6 Bh4 15. Rg6 $18) 13. Ra8 {$1 At least the pawn falls.} Bc3 {Best, because Black can still play for Del Rio's draw configuration .} (13. .. Bg7 14. c7 Kxc7 15. Ra7+ $18) 14. Re8 Be1 15. Rxe6 Bg3 (15. .. Kc7 16. Rg6 $18) 16. Rg6 Bh2 17. Rg2 $1 (17. Rh6 Bg3 18. Rh3 Bd6 19. Kd5 {Waste of time.}) 17. .. Bd6 {Another diagonal is too short.} 18. Kd5 1-0

[Event "GATTI 10th AT - 2nd COMMENDATION"] [Date "2026"] [White "Michal Hlinka & Lubos Kekely"] [Result "1/2-1/2"] [FEN "5b2/7P/1P6/1pnKR3/3pp1R1/q4k2/3P4/5B2 w - - 0 1"] 
 1. Be2+ $1 ({try} 1. Re8 $2 Qa2+ {/b3+} 2. Kc6 Qf7 $1 3. Rxf8 Qxf8 4. Rg8 Qh6+ 5. Kxc5 Qxh7 6. Rd8 Qe7+ 7. Rd6 b4 8. Bc4 e3 9. dxe3 dxe3 $19) 1... Kxe2 2. Rgxe4+ $1 (2. h8=Q $2 Qa2+ 3. Kc6 Qa8+ 4. Kc7 Qb7+ 5. Kd8 Qb8#) 2... Nxe4 (2... Kd1 3. Re1+ Kc2 4. h8=Q Qf3+ 5. R1e4 $1 $11) 3. h8=Q $1 {refutation to capture} (3. Rxe4+ $2 Kf3 4. h8=Q Qd6#) 3... Qa8+ 4. b7 $1 {forecasting} (4. Ke6 $2 Kxd2 5. b7 Qe8+ 6. Kf5 Nd6+ 7. Kg4 Qg6+ 8. Kf3 Qf7+ $19) 4... Qxb7+ 5. Kxd4 Bg7 {pin } 6. Qh5+ $1 ({try} 6. Qh2+ $2 Kd1 7. Ke3 (7. Kd3 Nc5+ $1 8. Rxc5 Qf3#) 7... Bxe5 8. Qxe5 Kc2 $1 9. Qxe4+ Qxe4+ 10. Kxe4 b4 $19) 6... Kxd2 7. Qe2+ $3 ({try } 7. Qh2+ $2 Kc1 8. Kd3 (8. Ke3 Bxe5 9. Qxe5 Kc2 $19) 8... Qd7+ $1 9. Kxe4 Qc6+ $19 {now after 10.Kf4 black wins: 10...Sxe5+ 11.Kxe5 Dc7+ skewer - compare with main, or...} 10. Kd4 (10. Ke3 Qc3+ $19) 10... Qd6+ $19) 7... Kc1 $1 (7... Kxe2 {stalemate}) 8. Kd3 $1 {unpin and mate threat} Qd7+ $1 9. Kxe4 Qc6+ (9... Bxe5 10. Qf1+ Kb2 11. Kxe5 $11) 10. Kf4 $1 (10. Kf5 $2 Qf6+ 11. Kg4 Qxe5 $19) 10... Qf6+ (10... Bxe5+ 11. Qxe5 Qc4+ 12. Kf5 $11) 11. Rf5 Bh6+ 12. Ke4 (12. Kg4 $2 Qg6+ $19) 12... Qe6+ (12... Qh4+ 13. Kd5 $11) 13. Re5 {Tries, mates, forecasting, ideal pin stalemate.} 1/2-1/2

[Event "GATTI 10th AT - 9th COMMENDATION"] [Date "2026"] [White "Beat Neuenschwander"] [Result "1-0"] [FEN "2r4k/6p1/1P1P2p1/q5n1/1RP5/3PP3/2Q2P2/6K1 w - - 0 1"] 
 {The study was inspired by the game Megan Paragua (12 years old!!) vs. Rose Atwell (16 years old!) of round 7 of the US Women's Championship 2025, in which Megan was trying to trick Rose in a lost endgame. For more details, see the commentary by Katerina Nemcova, Yasser Seirawan, and Maurice Ashley on the YouTube video (starting at 3:15:10) of the Saint Louis Chess Club .} 1. b7 (1. d7 $2 Rf8 $10) (1. Rb1 $2 Nf3+ 2. Kg2 Qh5 3. Rh1 Nh4+ 4. Kf1 g5 $10 5. Qe2 Qf7 6. Qg4 Rf8 $10) 1... Rb8 (1... Nf3+ 2. Kf1 Rb8 3. Qa4 $16) 2. Rb1 (2. Qb2 $2 Qf5 $1 $10) (2. Qb1 $2 Nf3+ 3. Kg2 Qh5 4. c5 Rxb7 $1 5. Rxb7 (5. c6 Rxb4 6. Qxb4 Ng5 $10) 5... Qg4+ 6. Kf1 Nd2+ 7. Ke1 Nxb1 8. d7 Qg1+ 9. Ke2 Qg4+ $10)  2... Nf3+ (2... Qf5 3. f4 $16) 3. Kg2 (3. Kf1 $2 Nd2+ 4. Ke2 Nxb1 $10) 3... Ne1+ (3... Nh4+ 4. Kh3 Qh5 5. Qd1 $1 Nf3+ 6. Kg2 Qg4+ 7. Kf1 Nh2+ 8. Ke1 Nf3+ 9. Ke2 $16) (3... Qh5 4. Qd1 $16) 4. Rxe1 Qxe1 5. c5 (5. d7 $2 Qb4 6. c5 Qg4+ 7. Kf1 Qxd7 8. c6 Qh3+ 9. Ke2 Rf8 $10) (5. d4 $2 Qb4 6. c5 (6. Qe4 Qxc4 7. d7 Qc7 8. Qe8+ Kh7 9. Qc8 Qd6 10. e4 g5 $10) 6... Qxb7+ 7. c6 Qf7 8. c7 (8. Qe4 Rf8 9. Qf4 Kg8 10. Qxf7+ Kxf7 11. e4 (11. d5 Re8 $10) 11... Ke6 12. e5 Kd5 13. c7 Ke6 $10) 8... Rc8 9. Qe4 Kg8 10. Qf3 (10. d5 Re8 $10) 10... Qd7 $10) 5... Rxb7 6. d7 $1 (6. c6 $2 Rb5 7. c7 Rg5+ 8. Kf3 Rf5+ 9. Kg2 Rg5+) 6... Rxd7 (6... Qa5 7. c6 Qg5+ (7... Rxd7 8. cxd7 Qd5+ 9. e4 Qxd7 10. Qd1 $16) 8. Kf1 Ra7 9. Qb2 $1 Kh7 10. Qd4 Ra8 11. c7 $16) 7. Qa4 $1 {Traps the rook!} 7... Rxd3 (7... Rb7 {<main>} 8. Qa8+) (7... Rc7 {<main>} 8. Qh4+ Kg8 9. Qd8+) (7... Rd8 {<main>} ) (7... Rd5 {<main>} 8. Qa8+) (7... Re7 {<main>} 8. Qh4+) (7... Rf7 {<main>} 8. Qe8+) (7... Qc3 8. Qxd7 Qxc5 {is hopeless, e.g.} 9. Qd8+ Kh7 10. Qh4+ Kg8 11. Qc4+) 8. Qh4+ Kg8 9. Qc4+ 1-0

[Event "GATTI 10th AT - 10th COMMENDATION"] [Date "2026"] [White "Volodymyr Samylo"] [Result "1/2-1/2"] [FEN "8/BK6/2Pk4/1Ppnp3/5b2/8/8/8 w - - 0 0"] 
 1. c7 $1 ({try} 1. Bb8+ $2 Ke6 $1 2. c7 Ne7 3. c8=Q+ Nxc8 4. Kxc8 c4 $1 5. b6 c3 6. b7 c2 7. Bc7 c1=Q 8. b8=Q e4 $1 9. Qb3+ $6 Ke7 {(f6)-+ see solution}) ({ also} 1. b6 $2 Ne7 $1 2. c7 Kd7 3. Ka8 e4 4. b7 Bxc7 5. Bxc5 Nc6 $19) 1... Ne7 (1... Nxc7 $6 2. Bb8 $1 Kd7 3. Bxc7 c4 $1 4. Ba5 e4 5. Bc3 $1 (5. b6 $2 Be5 $1 6. Ka6 c3 $1 7. b7 c2 8. Bd2 Kc6 $1 9. Bc1 Bc7 $1 $19) 5... Kd6 6. b6 Kd5 7. Ka6 e3 8. Kb5 $1 (8. b7 $2 Ke4 $1 $19) 8... e2 9. b7 Bg3 10. Be1 $1 Be5 11. Bc3 $1 Bd6 12. Bb4 Bb8 13. Bc3 $3 Bg3 14. Be1 $11 {pos.draw}) 2. c8=Q Nxc8 3. Kxc8 Kd5 $1 4. Bb8 $1 c4 5. b6 c3 6. b7 c2 (6. .. Be3 7. Bxe5 $1 $11) 7. Bc7 c1=Q 8. b8=Q e4 $1 9. Qb5+ $1 (9. Qb7+ $2 Kd4 $1 10. Qb6+ Kd3 $19) 9. .. Kd4 10. Qd7+ ( 10. Qb6+ $2 Kd3 $1 $19) 10... Ke3 11. Qh3+ Kd2 $1 (11. .. Kf2 12. Qh4+ $11) 12. Qg2+ Kd3 $1 13. Qh3+ Kd2 14. Qg2+ Ke3 15. Qh3+ $1 $11 {Two positional draw on capture a pawn c on different squares, return theme.} (15. Qg1+ $6 Qxg1 16. Bb6+ Kf3 $1 17. Bxg1 Be3 $1 $19) 1/2-1/2

[Event "GATTI 10th AT - 11th COMMENDATION"] [Date "2026"] [White "Aayush Wadhwa"] [Result "1-0"] [FEN "7k/8/3p1p2/B1N3Pb/1p1PpP1r/7p/4R1PK/8 w - - 0 1"] 
 1. g4! {Novotny.} (1. Rxe4? hxg2+ 2. Kxg2 {Black gains equality now due to the rook's vision being open along the fourth rank.} dxc5 (2. .. Rg4+ {[or]} 3. Kh3 dxc5 4. dxc5 fxg5 {$10 White cannot recapture due to the pin.}) 3. dxc5 fxg5 {White cannot recapture due to the pin.}) 1. .. Bxg4 {First move of the rundlauf of Black's bishop.} (1. .. Rxg4 {The attack on the White rook is blocked, White emerges a piece up.} 2. Ne6 $18 (2. Nxe4 {[or]})) 2. Rxe4 dxc5 3. gxf6 Kg8 4. f5! {A Pin on the Black bishopâ€”only possible due to White's first move, forcing the Black bishop to interfere with the Black rook.} Kf7 (4. .. cxd4 5. Rxd4 Kf7 6. Rd7+ Kxf6 7. Bd8+ Kxf5 8. Bxh4 $18) 5. Bd8! {First move of the rundlauf of White's bishop.} (5. dxc5? Kxf6 6. c6 Kxf5 $10) 5. .. cxd4 (5. .. b3 6. Re7+ Kf8 7. Bb6! Rh5 (7. .. Rh6 8. Bxc5 Rxf6 9. Re4+ Kf7 10. Rxg4 b2 11. Rg1 $18) 8. Bxc5 {or Rg7 first.} Rxf5 9. Rg7+ Rxc5 10. dxc5 Bf3 11. Rd7! b2 12. Rd8+ Kf7 13. Rb8 $18) (5. .. Rh8 6. Re7+ Kxf6 7. Re8+ Kg7 8. f6+ Kh7 9. f7 $18) 6. Re7+ Kf8 7. Rg7! Bxf5 {Second move of the rundlauf of Black's bishop.} 8. Be7+ {Second move of the rundlauf of White's bishop.} Ke8 9. Bxb4! {Third move of the rundlauf of White's bishop.} (9. Bc5? Bg6! $10) 9. .. Bg6! {Third move of the rundlauf of Black's bishop.} 10. Re7+! (10. Rxg6? Kf7 $10) 10. .. Kd8 11. Ba5+! {Final move of the rundlauf of White's bishop.} Kc8 12. Rc7+! Kb8 13. Rg7! Bh5 {Final move of the rundlauf of Black's bishop. Both White and Black bishops have returned to their starting squares after completing a rundlauf.} (13. .. Be8 14. Rg8 $18) 14. Rh7! {Echo-pin; compare to Move 4: the Black bishop, previously pinned to the rook on the fourth rank, is now pinned to the rook on the h-file. Black cannot prevent a loss of material.} Rf4 15. Bc7+ {$18 The White bishop makes one more move than its Black counterpart and it proves decisive! Theme: rundlaufs of both White and Black bishops on "echo-squares" of a5 and h5. The study is also connected by the echo-pins (Moves 4 and 14).} 1-0

[Event "GATTI 10th AT - SPECIAL COMMENDATION"] [Date "2026"] [White "Evgeni Egorov"] [Result "1/2-1/2"] [FEN "3k4/3r4/3n3p/3r4/3N4/3R4/3K3p/3R4 w - - 0 1"] 
 {8!} 1. Nc6+ $1 {7!} (1. Ne6+ $2 Ke7 2. Rxd5 Ne4+ 3. Ke3 Rxd5 $19) 1... Kc7 {6! } 2. Rxd5 {3+2!} Nc4+ $1 (2... Ne4+ 3. Ke3 Rxd5 4. Rh1 Ng3 5. Rxh2 Nf1+ 6. Ke4 $11) 3. Kc3 Rxd5 4. Rh1 Rc5 {5!} 5. Nd4 (5. Nb4 $2 Ne5+ 6. Kd4 (6. Kb3 Ng4 $19) 6... Kd6 7. Nd3 Rd5+ $19 {4!}) 5... Ne5+ 6. Kd2 Ra5 (6... Rd5 {2!} 7. Ke3 Ng4+ 8. Ke4 Nf2+ (8... Rh5 9. Kf3 $11) (8... Rd7 9. Ne6+ $11) (8... Kd6 {3!} 9. Nf5+ $11) 9. Kxd5 Nxh1 10. Nf3 $11) 7. Ke3 (7. Rxh2 $2 Ra2+ 8. Nc2 Nf3+ $19) 7... Ra4 8. Nf5 h5 9. Nh6 $1 {2+2!} (9. Ng3 $2 Ra3+ 10. Kf4 Ng6+ $19) 9... Ra3+ ( 9... Rh4 10. Kf2 Rf4+ 11. Ke3 (11. Kg3 Rf6 12. Rxh2 Rxh6 $19) 11... Rf6 12. Ke4 Nf3 13. Nf5 $11) (9... Ra2 10. Kf4 $11) 10. Kf4 $1 (10. Ke4 $2 Nf3 11. Nf5 Nd2+ 12. Ke5 Rh3) 10... Nf3 {2+2+2!} 11. Nf5 $1 {3+2!} (11. Kg3 Kd7 $1 $19) 11... h4 12. Nxh4 Nxh4 (12... Ra1 13. Rxa1 Ng1 14. Nf3 $11) 13. Rxh2 {1!} Ra8 14. Rxh4 Ra4+ 15. Kg5 Rxh4 16. Kxh4 {0!} 1/2-1/2