www.arves.org - UAPA 13th 2020

Studies awarded for the 13th UAPA tournament 2020.

3 Sections:

1. Theme: One or two rooks against Quen.

2. No theme: Win studies

3. no theme: Draw studies.

Section Thematic: One or two Rooks vs Queen

[Event "1.p. UAPA 13th Ty sec.tt"] [Date "2020"] [White "Peter Krug & Pavel Arestov"] [Result "1-0"] [FEN "8/7k/Q1PK3p/8/8/7r/8/1r6 w - - 0 1"] 1. c7 $1 (1. Qa7+ $2 Kg6 2. c7 Rc3 $11) (1. Qe2 $2 Rg3 2. Qc2+ Rg6+ $11) 1... Rc3 ({B)} 1... Rg3 $1 2. Qc4 $1 (2. c8=Q $2 Rg6+ $11) 2... Rg6+ 3. Ke5 $1 (3. Ke7 $2 Rg7+ $11) 3... Re1+ (3... Rg5+ 4. Kf4 $18) 4. Kf4 $1 (4. Kf5 $2 Rh1 $1 5. c8=Q Rh5+ 6. Kf4 Rh4+ 7. Kf3 Rxc4 $11) 4... Re8 (4... Rf6+ 5. Kg3 Rg1+ 6. Kh3 Rfg6 7. Qe4 $18) 5. Qf7+ $1 (5. c8=Q $2 Rxc8 $11) 5... Rg7 6. Qxe8 Rxc7 7. Qe4+ $1 Kg8 8. Qg6+ Rg7 9. Qxh6 $18) 2. c8=Q Rxc8 3. Qd3+ $1 Kh8 $1 (3... Kg7 { /g8} 4. Qxb1 $18) 4. Qd4+ $1 (4. Qxb1 $2 Rg8 $1 5. Ke7 Rg7+ 6. Kf8 Rg8+ 7. Kf7 Rg7+ $13) 4... Kh7 5. Qe4+ Kh8 6. Qe5+ Kg8 (6... Kh7 7. Qf5+ $18) 7. Qe6+ $1 ( 7. Qd5+ $2 {is loss of time}) 7... Kg7 8. Qd7+ $1 (8. Qe7+ $5 Kg8 9. Qe6+ Kg7 { loss of time}) (8. Qxc8 $2 Rd1+ 9. Ke5 Rg1 $1 $11) 8... Kf6 $1 (8... Kg6 9. Qxc8 Rd1+ 10. Ke7 Re1+ 11. Kf8 Rf1+ 12. Kg8 $18) 9. Qe7+ $1 (9. Qxc8 $4 Rd1+ 10. Kc7 Rc1+ $19) 9... Kg6 10. Qe4+ $1 Kf6 11. Qxb1 $18 {win} 1-0

[Event "Sp.c. UAPA 13th Ty sec.tt"] [Date "2020"] [White "Michal Hlinka & Luboš Kekely"] [Result "1/2-1/2"] [FEN "7K/r7/5P2/4PRPp/7p/8/4p3/2k5 w - - 0 1"] 
 1. f7 $1 (1. g6 $2 Ra8+ 2. Kh7 e1=Q 3. f7 Qe4 $19) 1... Rxf7 ({B)} 1... Ra8+ 2. f8=Q Rxf8+ 3. Rxf8 e1=Q 4. g6 h3 $1 (4... Qxe5+ 5. g7 h3 6. Kh7 Qe4+ 7. Kh8 Qd4 8. Rf3 $1 {as in line A) after 3..Qxe5}) 5. g7 h2 6. Rc8+ $1 Kd2 (6... Kb2 7. Rb8+ Ka3 8. g8=Q Qxe5+ 9. Kh7 $11) 7. Rd8+ $1 (7. g8=Q Qxe5+ 8. Kh7 h1=Q 9. Qa2+ Ke3 10. Qa7+ Kf4 11. Rf8+ Kg3 12. Rg8+ Kh4 $19) 7... Kc3 8. Rc8+ $1 (8. g8=Q $2 Qxe5+ 9. Kh7 h1=Q 10. Rc8+ Kd2 11. Qa2+ Ke3 {as after 7.g8Q}) 8... Kd4 (8... Kb4 9. g8=Q Qxe5+ 10. Kh7 $11) 9. Rd8+ $1 (9. g8=Q $2 Qxe5+ 10. Kh7 h1=Q 11. Qd8+ Qhd5 12. Qb6+ Ke4 13. Qb4+ Kf3 14. Rc3+ Ke2 15. Rc2+ Ke3 16. Rc3+ Qxc3 $19) 9... Kc3 (9... Kc5 10. Rd5+ $1 Kxd5 11. g8=Q+ Kd4 12. Qd8+ Ke4 13. Qa8+ Kf4 14. Qf8+ $1 $11) 10. Rc8+ Kb2 11. Rb8+ $1 (11. g8=Q $2 Qxe5+ 12. Kh7 Qe4+ 13. Kh8 Qd4+ 14. Kh7 Qa7+ 15. Kh6 Qb6+ 16. Kg5 Qg1+ $19) 11... Kc1 12. Rc8+ $1 (12. g8=Q $2 Qxe5+ 13. Kh7 Qe4+ 14. Kh6 Qe3+ 15. Kh7 Qd3+ 16. Kh6 h1=Q 17. Qg5+ Kd1 $19) 12... Kd2 13. Rd8+ $11) 2. Rxf7 e1=Q 3. g6 h3 (3... Qxe5+ 4. g7 h3 5. Kh7 Qe4+ 6. Kh8 Qd4 7. Rf3 $1 h2 8. Rf1+ Kd2 9. Rh1 Qe5 10. Rxh2+ Qxh2 11. g8=Q Qe5+ 12. Kh7 $1 $11) 4. g7 h2 5. Rc7+ $1 (5. g8=Q $2 Qxe5+ 6. Rg7 h1=Q 7. Qc4+ Kb1 8. Qb3+ Qb2 $19) 5... Kb2 $1 6. Rb7+ Ka3 $1 (6... Kc3 7. g8=Q Qxe5+ 8. Kh7 Qe4+ 9. Kh8 Qxb7 10. Qg3+ $11) 7. Ra7+ $1 (7. g8=Q $2 Qxe5+ 8. Kh7 Qe4+ 9. Kh8 Qxb7 10. Qf8+ Ka2 11. Qf7+ Qb3 12. Qa7+ Kb1 13. Qh7+ Qc2 $19) 7... Kb4 8. Rb7+ $1 (8. g8=Q $2 Qxe5+ 9. Kh7 h1=Q 10. Qf8+ Kb5 $19) 8... Ka3 (8... Ka5 9. g8=Q Qxe5+ 10. Kh7 Qe4+ 11. Kh8 Qxb7 12. Qa2+ $11) 9. Ra7+ {positional draw} Kb4 10. Rb7+ Kc5 11. g8=Q Qxe5+ 12. Kh7 Qe4+ 13. Kh8 Qxb7 14. Qf8+ $11 {draw} 1/2-1/2

Section: No Theme, Win studies

[Event "sp.p. UAPA 13th Ty sec.win"] [Date "2020"] [White "Sergei Didukh"] [Result "1-0"] [FEN "rr6/5ppk/1p5p/1p1b4/6BB/5QRP/2P1pPPK/3q4 w - - 0 1"] 
 {The white army storms violently and takes the BK by his throat, while leaving his own king naked. The study scores very high on originality, but the initial crowded position is painful to watch. I put creativity before economy, naturalness, and airy position; hence, a prize.} 1. Bf5+ g6 (1... Kg8 2. Qg4 g5 (2... Qg1+ 3. Kxg1 e1=Q+ 4. Kh2 Qe5 5. f4 Qa1 6. c3 $18) 3. Bxg5 hxg5 4. Qxg5+ Kf8 5. Qg7+ Ke8 6. Qf6 $1 $18) 2. Qh5 Qg1+ $1 {Another queen will defend g6.} ( {The rook can't stop White's attack:} 2... Rg8 3. Bg5 Rg7 4. Qxh6+ Kg8 5. Bf6 Rh7 6. Rxg6+ $1 fxg6 7. Qxg6+ Kf8 8. Qxh7 $18) 3. Kxg1 e1=Q+ 4. Kh2 Qe8 5. Bg5 Qf8 6. Bf6 $1 (6. Bf4 $2 Qg7 7. Be5 Qg8 8. Rg4 Be6 $1 (8... Bc4 $2 9. Qxh6+ $1 Kxh6 10. Rh4+ Kg5 11. Bg4 $1 Ra3 12. f4+ Kxh4 13. Bd4 $1 $18) 9. f4 gxf5 $1 $11 ) 6... Qe8 $1 (6... Qg8 7. Rg4 $1 Ra4 8. f4 $18 {Qxh6 and Rh4# will follow.}) 7. Rg5 $3 {All-in! White intends to undress his king and cut off his heavy pieces by another weird move g4. If Black stops mate the white king will remain alone against enemy canons.} ({Straightforward attack} 7. Rg4 $2 Ra4 8. f4 {is countered by sacrifices:} Bf3 $1 9. gxf3 (9. Bg5 Kg8 $1 10. Qxh6 Qf8 11. gxf3 Qxh6 12. Bxh6 Kh7 $19) 9... Rxf4 $1 10. Rxf4 Qe2+ 11. Kg3 Qe1+ 12. Kg4 Qg1+ $11) ({A little subtlety} 7. f4 $2 {is met by} Bc4 $1 (7... Ra4 $2 8. Be5 $18) 8. Rg4 Be2 $19) 7... Rb7 $1 (7... Ra4 8. g4 $1 Qg8 9. h4 $1 (9. Rxg6 $2 fxg6 10. g5 Rh4 $1 11. Qxh4 Qf8 $11) 9... Rf4 10. Qxh6+ Kxh6 11. Rh5+ gxh5 12. g5+ Qxg5 13. hxg5#) ({After} 7... Be6 8. Rg4 $1 {works again:} Ra4 9. f4 Rxf4 10. Rxf4 Bxf5 11. Qxh6+ Kxh6 12. Rh4#) 8. g4 $1 Qb8+ 9. Kg1 Ra1+ 10. Bxa1 Qe8 11. Be5 $1 Re7 ({No time for} 11... Bf3 12. h4 $1 (12. Qh4 $2 Qe7 13. Rxg6 fxg6 14. Bxg6+ Kg8 $1 $11) 12... Rd7 13. Qxh6+ Kxh6 14. Rh5+ gxh5 15. g5#) 12. f4 $1 ({The WQ will suffocate after} 12. h4 $2 Rxe5 13. Bxg6+ fxg6 14. Rxe5 Qf7 $19) 12... Rxe5 {Mate has dissapeared together with the bishop. The white prisonners must think about their own safety.} 13. Bxg6+ $1 (13. fxe5 $2 Kg7 $11) 13... fxg6 14. Rxe5 Qf8 (14... Qd8 15. Rxd5 Qe7 16. Qe5 $18) 15. Qh4 Qc5+ 16. Qf2 $1 {Just in time!} 1-0

[Event "1.hm.UAPA 13th Ty sec.win"] [Date "2020"] [White "Peter Krug & Mario Garcia"] [Result "1-0"] [FEN "4bN1k/6p1/1R6/6PP/1pp1Bq2/1Pp3P1/3p1r2/1K5R w - - 0 1"] 
 {Interesting play and counterplay, decided by the accurate 10.Ra2!} 1. Ng6+ $1 (1. gxf4 $2 Re2 2. Ng6+ Kh7 $11) 1... Bxg6 2. hxg6+ Rh2 $1 3. Rxh2+ Kg8 4. Bc2 $1 (4. Bd5+ $2 Kf8 5. Rh8+ Ke7 6. Rb7+ Kd6 7. Rd8+ Kc5 8. Rb5+ Kxb5 9. Bxc4+ Qxc4 10. bxc4+ Kxc4 $11 {positional draw}) 4... Qxg3 (4... Qf1+ 5. Ka2 Qf8 6. Ra6 $18) 5. Rf2 $1 (5. Re2 $2 Kf8 6. Rbe6 Qg1+ 7. Ka2 Qa7+ 8. Kb1 Qg1+ $11) (5. Rh1 $2 Qe1+ 6. Ka2 Kf8 $11) 5... d1=Q+ (5... Qxf2 6. Rb8+ Qf8 7. Rxf8+ Kxf8 8. bxc4 $18) 6. Bxd1 c2+ 7. Bxc2 (7. Rxc2 $2 Qxb3+ 8. Ka1 Qa3+ 9. Kb1 Qb3+ $11) 7... cxb3 (7... Qxf2 8. Rb8+ Qf8 9. Rxf8+ Kxf8 10. bxc4 $18) 8. Rb8+ Qxb8 9. Bxb3+ Kh8 10. Ra2 $1 (10. Rc2 $2 Qc7 11. Rxc7 $11 {stalemate} (11. Ba2 Qxc2+ 12. Kxc2 b3+ 13. Kxb3 Kg8 $11)) (10. Re2 $2 Qe5 11. Bc4 (11. Rxe5 $11 { stalemate}) 11... Qxe2 12. Bxe2 $11 {positional draw}) (10. Rf3 Qc8 11. Bd5 ( 11. Rf4 Qf5+ {/c1=}) 11... b3 12. Rf2 Qc2+ 13. Rxc2 bxc2+ 14. Kxc2 $11 { stalemate}) 10... Qf4 (10... Qe8 11. Rh2#) 11. Ra8+ Qb8 12. Rxb8# 1-0

[Event "2.hm.UAPA 13th Ty sec.win"] [Date "2020"] [White "Michael Pasman"] [Result "1-0"] [FEN "7k/3K2p1/4P1Pn/8/8/8/b6P/8 w - - 0 1"] 
 {5.Ke5! is surprising. Afterwards play is dictated by the idea of forcing a knight exchange, white executing a triangle, with some minor duals.} 1. e7 Be6+ $1 2. Kxe6 $1 ({Thematic try :} 2. Kd8 Bd7 $1 3. Kxd7 Ng8 4. e8=N Nh6 $11 { and the knight is out}) (2. Kc7 Bd7 $1) 2... Ng8 $1 3. e8=N $1 (3. e8=Q { Stalemate}) (3. e8=R {Stalemate}) (3. e8=B $11) (3. Kf7 Nxe7 $11) 3... Nh6 4. h3 $1 {blocks the knight} (4. Nc7 $2 Ng4 $11) 4... Kg8 $1 (4... Ng8 5. Kd7 $1 ( 5. Nd6 $2 Nf6 $11) 5... Nh6 6. Nd6 $1 Kg8 7. Ke7 Kh8 8. Kf8 $18) 5. Ke5 $1 (5. Ke7 $2 Nf5+ $2) (5. Nd6 $2 Kf8 $1 $11) (5. Nc7 Kh8 { wastes time - now no better then go back} 6. Ne8 (6. Ke5 $2 Ng8 $1 {threat Ne7} 7. Nd5 Ne7 $3 $11)) 5... Kf8 ({In case of} 5... Kh8 { White executes the same plan , but with another path with the knight} 6. Nd6 $1 ({thematic try :} 6. Nc7 $2 Ng8 $1 7. Nd5 Ne7 $1 $11) 6... Kg8 7. Ne4 Kf8 8. Ng5 Kg8 9. Ke4 {/f4} Kf8 10. Ne6+ $1 Kg8 11. Kf4 $1 Kh8 12. Ng5 $1 Kg8 13. Nh7 $1) 6. Nc7 $1 (6. Nd6 $2 Ng8 $1 7. h4 Ne7 8. h5 Ng8 9. Ke6 Nh6 10. Nf7 Ng4 { is already draw}) 6... Kg8 (6... Ng8 7. Ne6+) 7. Ne6 $1 Kh8 8. Ng5 {/d8} Kg8 9. Ke4 {/f4 Triangle with the King} (9. Ke6 Kf8 $1 { and the only move is to return to e5, because} 10. Nh7+ Ke8 11. Ng5 $11 Ng8 $1 {Knight is out}) 9... Kf8 (9... Kh8 10. Nf7+) 10. Ne6+ Kg8 (10... Ke7 11. Ke5 $1 {and Nxg7}) 11. Kf4 $1 Kh8 12. Ng5 $1 (12. Ke5 $2 Ng8 $1 $11) 12... Kg8 13. Nh7 $1 {Other moves are just waste of time, for example :} (13. Nf3 Kf8 14. Nd4 Kg8 15. Ne6 Kh8 { and White has no better then to return to previous position with} 16. Ng5) ({or } 13. Ke4 Kf8 14. Ne6+ Kg8 15. Kf4 Kh8) 13... Kh8 14. Ke5 $1 (14. Ke4 $2 Ng8 $1 {and Ne7 next is draw}) 14... Kg8 (14... Ng8 15. Ke6 Nh6 {the same}) 15. Ke6 Kh8 16. Ng5 Kg8 17. Nf7 $1 (17. Ke5 Kf8 18. Ne6+ Kg8 19. Ke4 Kh8 20. Ng5 Kg8 21. Nh7 Kh8 { just wastes time - and White has nothing better than to return to the main line } 22. Ke5 Kg8 23. Ke6 Kh8 24. Ng5 Kg8 25. Nf7) 17... Nxf7 18. gxf7+ Kf8 19. h4 g6 20. Kf6 g5 21. h5 $18 1-0

[Event "5.hm.UAPA 13th Ty sec.win"] [Date "2020"] [White "Itay Richardson"] [Result "1-0"] [FEN "6B1/3NR3/P7/8/p4k2/PN2p3/2ppP3/5K2 w - - 0 1"] 
 {A wealth of combinational elements, all known but the synthesis is impressive. The composer, a grandson of the famous Yehuda Hoch, is 14 years old.} 1. Kg2 $1 (1. Re4+ $2 Kg5 (1... Kxe4 $2 2. Bh7+ Kd5 3. Bxc2 $18) 2. Kg2 d1=Q 3. Nc1 Qxd7 $11) 1... d1=Q (1... axb3 2. Re4+ Kxe4 3. a7 d1=Q 4. a8=Q+ $18) 2. Nc1 $1 Qxc1 3. Re4+ $1 (3. a7 $2 Qd1 4. Re4+ Kg5 $11) 3... Kxe4 (3... Kg5 4. Re5+ Kf4 (4... Kh6 5. a7 $18) 5. Bh7 (5. Be6 $2 Qf1+ $1 6. Kxf1 c1=Q+ 7. Kg2 Qc6+ 8. Bd5 (8. Kh2 Qg2+ 9. Kxg2 {stalemate}) 8... Qg6+ 9. Kh1 Qh6+ 10. Kg1 Qg6+ 11. Kf1 Qb1+ $11) 5... Qf1+ (5... Qb2 6. Rf5+ Kg4 (6... Ke4 7. Rb5+ $18) 7. Nf6+ Qxf6 8. Rxf6 c1=Q 9. a7 $18) 6. Kxf1 c1=Q+ 7. Kg2 Qc6+ 8. Re4+ $18) 4. a7 Qg1+ $3 (4... Qf1+ 5. Kxf1 $18 {with the same continuation}) 5. Kxg1 c1=Q+ 6. Kg2 $1 (6. Kh2 $2 Qc7+ 7. Kg2 Qxa7 $19) 6... Qc6 (6... Qc8 7. Bd5+ Kxd5 8. Nb6+ $18) 7. Bd5+ $1 (7. a8=Q $2 Qxa8 8. Bd5+ Qxd5 9. Nf6+ Kd4+ 10. Nxd5 Kxd5 $11) (7. Nf6+ $2 Kd4+ 8. Bd5 Qxf6 9. a8=Q Qg6+ 10. Kf1 (10. Kh3 Qh5+ $11) 10... Qb1+ $11) 7... Kxd5 (7... Qxd5 8. Nf6+ $18) 8. a8=B $1 (8. a8=Q $2 Kd4+ 9. Qxc6 $11 {stalemate }) 8... Qxa8 9. Nb6+ Kc6 10. Nxa8 $18 1-0

[Event "sp.hm.UAPA 13th Ty sec.win"] [Date "2020"] [White "Michael Pasman"] [Result "1-0"] [FEN "8/8/3p4/6p1/2P5/4P3/K5P1/2k5 w - - 0 1"] 
 {When Van der Heijden's study (Kh2/f2, 2003) with the astounding key 1. Kh2-h1!! came out, it attracted a lot of attention. Recently Sprenger added some content to this matrix (FMRE 2020) and now Pasman added another brick - white must carefully choose his second and third moves. Elaboration of Harold van der Heijden (2003) famous study.} 1. e4 $1 (1. Kb3 Kd2 2. e4 Kd3 $11) 1... Kd2 2. Kb1 $3 ({Thematic - logical try :} 2. Kb2 $2 g4 $1 3. Kb1 Ke3 $1 4. e5 ( 4. c5 dxc5 5. e5 Kd2 $1) 4... dxe5 5. c5 Kf2 6. c6 e4 7. c7 e3 8. c8=Q e2 { see main line 1 : the difference is that the White King is on b1 instead of b2, so White cannot continue Qxg4, because e1=Q comes with check.} 9. Qc5+ Kf1 10. Qc4 (10. Qf5+ Kg1 $1) 10... Kf2 11. Qf4+ Kg1 $1 12. Qe3+ Kf1 $11) (2. g4 Kd3 $11) (2. Kb3 Kd3 $11) 2... g4 3. Kb2 $1 {Main 1 :} ({Thematic try} 3. g3 $2 Ke3 $1 4. e5 dxe5 5. c5 e4 6. c6 Kf2 7. c7 e3 8. c8=Q e2 9. Qc2 Kf1 10. Qd3 Kf2 $11 ) (3. Ka2 Kd3 $1) 3... Ke3 $5 ({Main 2 :} 3... g3 $5 4. Kb1 $1 Ke3 $5 (4... Kd3 5. e5 dxe5 6. c5 e4 (6... Ke2 7. c6 Kf2 8. c7 Kxg2 9. c8=Q) 7. Kc1 $1 Ke2 8. c6 e3 9. c7 Kf2 10. c8=Q $18) (4... Kd1 $5 5. e5 (5. Ka2 Kd2) 5... dxe5 6. c5 e4 7. c6 e3 8. c7 e2 9. c8=Q e1=Q 10. Qc2#) (4... Ke1 5. e5 dxe5 6. c5 e4 7. c6 e3 8. c7 e2 9. c8=Q $18) 5. e5 dxe5 6. c5 e4 7. c6 Kf2 8. c7 e3 9. c8=Q $18 { now white is winning, because the square f3 is available for check}) 4. e5 $1 ( {Try :} 4. c5 dxc5 5. e5 Kd2 $1 6. Kb3 Kd3 $1 7. Kb2 Kd2 $1 $11) 4... dxe5 5. c5 e4 6. c6 Kf2 7. c7 e3 8. c8=Q e2 9. Qxg4 e1=Q 10. Qh4+ $18 1-0

[Event "sp.c. UAPA 13th Ty sec.win"] [Date "2020"] [White "Mihail Croitor"] [Result "1-0"] [FEN "k7/4p1p1/8/8/8/8/4P1P1/K7 w - - 0 1"] 
 {It is quite surprising that in this simple symmetrical position, white's turn to move is decisive, due to opposition and ZZ. This work will be a valuable training material for students of the game. Yet we have to examine the human contribution to computer work. Now, right in the initial position, the software announces "mate in 41 moves". The author follows the moves on the screen, investing neither effort, nor a single drop of imagination, just paste and copy. Despite the intriguing initial position, while acknowledging the composer's general excellence, I feel that this work deserves at best a commendation.} 1. Kb2 (1. Ka2 $2 Kb8 2. Kb2 Kc8 3. Kc2 Kd8 4. Kd2 e5 $1 $11 5. Ke3 Ke7 6. Ke4 Ke6 7. g4 g6 $11) 1... Kb7 2. Kb3 $1 Kb6 3. Kb4 Kc6 4. Kc4 Kd6 ( 4... e5 5. e4 $1 Kd6 6. Kb5 $18) 5. Kd4 g6 $1 (5... e6 6. Ke4 g5 7. g4 $18) ( 5... Ke6 6. Ke4 Kf6 (6... g6 7. Kf4 Kf6 8. g3) 7. Kf4 g5+ (7... g6 8. g3) 8. Ke4 e5 9. g4 $18) 6. g3 $1 (6. Ke4 $2 e5 7. e3 Ke6 8. g3 Kd6 $11) (6. g4 $2 Ke6 7. Ke4 Kf6 8. Kf4 e5+ 9. Ke4 Ke6 $11) 6... Ke6 7. Ke4 Kf6 8. Kf4 e6 $1 (8... g5+ 9. Ke4 e6 10. g4 $11) 9. e3 $1 (9. e4 $2 g5+ 10. Kg4 Kg6 $11) 9... g5+ ( 9... e5+ 10. Kg4 g5 11. e4 Kg6 12. Kf3 Kh5 13. Kf2 Kg4 14. Kg2 Kh5 15. Kf3 $18) 10. Ke4 (10. Kg4 $5 Kg6 $11) 10... e5 11. Kf3 Kg6 (11... Kf5 12. e4+ $18) ( 11... Ke6 12. e4 Kf6 13. Ke3 Ke6 14. Kd3 Kd6 15. Kc4 Kc6 16. g4 $18) 12. e4 Kh5 13. Kf2 Kg4 14. Kg2 Kh5 15. Kf3 Kh6 (15... Kg6 16. Kg4 (16. Ke3 $2 Kh5 $11) 16... Kh6 17. Kf5 $18 Kh5 18. Kxe5 Kg4 $18) 16. g4 $18 {wins} Kg6 17. Ke3 Kf6 18. Kd3 Ke6 19. Kc4 Kd6 20. Kb5 $18 1-0

Section: No theme, Draw studies

[Event "1.p.13th UAPA sec.B.2.draw "] [Date "2020"] [White "Michael Pasman"] [Result "1/2-1/2"] [FEN "R7/KR6/5P2/2p5/1p5q/7k/P3B3/r7 w - - 0 1"] 
 1. Bc4 $3 (1. f7 $2 Rxa2+ 2. Ba6 Qf6 $19) 1... Qxc4 (1... Qxf6 $4) 2. Rh8+ $1 ( 2. f7 $2 Rxa2+ (2... Qxa2+)) (2. Rh7+ $2 Kg4 $1 3. Rg8+ $5 Kf5 $3) 2... Kg4 3. Rg8+ $3 Qxg8 (3... Kf5 4. f7 Qxa2+ (4... Rxa2+ 5. Kb8 Qf4+ 6. Rc7 $11) 5. Kb8 Qh2+ 6. Rc7 $11) 4. Rg7+ Kh5 $3 (4... Kf5 5. Rxg8 Kxf6 6. Kb6 $1 c4 7. Kb5 $1 c3 8. Rc8 Ke5 9. Kxb4 Rb1+ 10. Ka5 $1 Kd4 11. a4 $1 Kd3 12. Rd8+ $1 Kc4 13. Rc8+ $1 Kd3 14. Rd8+ Kc2 15. Ka6 $1 $11) (4... Qxg7+ $4 5. fxg7 Rxa2+ 6. Kb7 $18) 5. Rxg8 b3 $1 6. Rb8 $1 ({Not} 6. f7 $2 b2 $1 7. Rg1 (7. f8=Q Rxa2+ 8. Kb7 b1=Q+ $19) 7... Rxg1 8. f8=Q b1=Q $19) 6... Rxa2+ (6... c4 7. f7 Rxa2+ 8. Kb6 $1 Rf2 9. Kc5 $1 $11) (6... bxa2 7. Rb2 $11) 7. Kb7 $1 ({Try :} 7. Kb6 $2 Ra8 $3 8. Rxa8 (8. Rb7 c4 $1) 8... b2 9. Rh8+ Kg6 $1 10. Rh1 c4 11. Rf1 Kf7 $1 12. Kc5 c3 13. Kd4 c2 $19) 7... c4 (7... Kg6 8. Kc6 $1 c4 {the same as main}) 8. Kc6 $1 (8. f7 $2 Rf2 9. Kc6 Rxf7 10. Kd5 Rf4 $19 (10... Rc7 $19)) 8... Kg6 9. Kd5 $1 Rc2 10. Ke6 $1 Re2+ 11. Kd5 $1 Rc2 12. Ke6 Rf2 13. Kd5 $1 Rf4 14. f7 $1 (14. Kc5 $2 Kxf6 $19) (14. Rb6 $2 Rxf6 15. Rb4 Rf4 $19) 14... Kxf7 15. Rb6 $1 Kg7 $5 (15... Rh4 16. Kc5 $1 $11 { And Black can't improve his position, for example} Ke7 17. Kd5 Kd7 18. Kc5 Kc7 19. Rc6+ Kb7 20. Rb6+ Ka7 21. Rb4) 16. Kc5 $1 Rf6 17. Rb4 $3 (17. Rb8 $2 Rf8 $1 18. Rb7+ Rf7 $1 $19) 17... Rf4 18. Rb6 $1 $11 1/2-1/2

[Event "3.p.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Petr Kiryakov & Pavel Arestov"] [Result "1/2-1/2"] [FEN "8/8/5r2/5n2/8/k5pQ/p7/6K1 w - - 0 1"] 
 1. Qf1 Nd4 $1 (1... Kb2 2. Qb5+ $11) 2. Qc1+ $1 (2. Qxf6 $2 a1=Q+ 3. Kg2 Qb2+ $1 4. Kxg3 Ne2+ $19) 2... Kb3 3. Qd1+ (3. Qe3+ $2 Kc4 4. Qc1+ Kd5 5. Qg5+ Ke4 $1 $19) 3... Kc3 (3... Nc2 4. Qd5+ Kb2 5. Qe5+ $11) (3... Kc4 4. Qa4+ $11) 4. Qa1+ Kd3 $1 (4... Kb3 5. Qxd4 $11) 5. Qd1+ $1 (5. Qxa2 $2 Ne2+ $1 6. Kg2 Rf2+ 7. Kh3 Ng1+ $19) 5... Ke3 6. Qc1+ $1 (6. Qe1+ $2 Ne2+ $19) 6... Ke4 7. Qe1+ Kf5 8. Qa5+ Kg4 9. Qxa2 Nf3+ 10. Kg2 $1 (10. Kf1 $2 Nd2+ $1 11. Ke1 Rf1+ 12. Ke2 Rf2+ 13. Kd3 Kh3 $1 $19) (10. Kh1 $2 Rh6+ 11. Kg2 Rh2+ 12. Kf1 Rh1+ (12... Nd2+ 13. Kg1 Nf3+ 14. Kf1) (12... Rxa2 $4 {ïàò}) 13. Ke2 Re1+ $19) 10... Nh4+ 11. Kg1 Kh3 12. Qe2 $1 (12. Qc2 $2 Re6 $1 13. Qd1 Re1+ $19 (13... Nf3+ $19)) 12... Rf5 13. Qc2 $1 (13. Kh1 $2 Re5 $1 14. Qxe5 g2+ 15. Kg1 Nf3+ $19) (13. Qe6 $2 Nf3+ 14. Kh1 g2#) 13... Rf8 (13... Nf3+ 14. Kh1 $1 $11) 14. Qe2 Rf6 $1 15. Kh1 $1 (15. Qc2 $2 Re6 $1 16. Qc3 Re1+ 17. Qxe1 Nf3+ $19) 15... Rc6 (15... Rf2 16. Qxf2 $1 gxf2 {stalemate 1}) (15... g2+ 16. Kg1 Nf3+ 17. Qxf3+ $1 Rxf3 { stalemate 2}) 16. Qh2+ $1 Kg4 (16... gxh2 {stalemate 3}) 17. Qe2+ Kh3 18. Qh2+ $11 {positional draw} 1/2-1/2

[Event "4.p.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Pavel Arestov & Mario Garcia & Vladislav Tarasiuk"] [Result "1/2-1/2"] [FEN "8/8/8/P7/8/7n/B1K1kP2/6r1 w - - 0 1"] 
 1. a6 $1 (1. Bc4+ $2 Kxf2 2. a6 Ke3 {/Nf4-+}) 1... Rg7 2. Bc4+ $1 (2. Kc3 { /Bd5?} Nxf2 3. Bd5 Rc7+ $1 4. Kd4 (4. Kb4 Nd3+ 5. Kb5 Rc5+ 6. Kb6 Rxd5 7. a7 Rd8 $19) 4... Nd1 $1 5. Bb7 Nc3 $1 6. a7 Nb5+ $19) 2... Kxf2 (2... Kf3 3. Bd5+ Kf4 4. Bb7 $11) 3. Kc3 $1 ({Try:} 3. Bd5 $5 Rc7+ 4. Kb3 Nf4 5. Bb7 Nd3 $1 6. Ka4 Nb2+ 7. Kb5 Nc4 8. Bd5 Nd6+ 9. Kb6 Re7 $1 10. Kc5 Nc8 11. Bb7 Rc7+ 12. Kb5 Nd6+ 13. Ka5 Nc4+ 14. Kb5 Ke3 $19) ({or} 3. Kb3 $2 Ke3 $1 4. Bd5 Kd4 5. Bb7 Kc5 6. a7 Rxb7+ $19) ({or} 3. Kd3 $2 Nf4+ {/Rc7} 4. Kd4 Rc7 $19) 3... Nf4 $1 (3... Ke3 4. Bd5 $1 Nf4 5. Bb7 Ne6 6. Kc4 $1 $11) 4. Kb4 $1 (4. Kd4 $2 Rc7 {/g5-+}) 4... Ke3 5. Kc5 $1 (5. Kb5 $2 Kd4 $19) 5... Rc7+ 6. Kb5 $1 (6. Kb6 $2 Rxc4 7. a7 Nd5+ $19) 6... Kd4 7. Bb3 $1 ({Thematic Try:} 7. Ba2 $2 Rh7 $3 (7... Nd3 $2 8. Kb6 Rh7 9. a7 $11) (7... Rd7 $2 8. Kb6 $1 Rd6+ 9. Kb5 Ne2 10. a7 Nc3+ 11. Ka5 Rd8 12. Kb6 $1 $11) (7... Rg7 $2 8. Kb6 $1 Rg6+ 9. Ka5 $1 ({no} 9. Kb5 Ne2 10. a7 Nc3+ 11. Ka5 Rg5+ 12. Kb6 Na4+ 13. Kb7 Rg7+ 14. Kb8 Nb6 15. a8=Q Nxa8 16. Kxa8 Kc5 17. Kb8 Kc6 $19) 9... Rg2 10. Bf7 $1 Nd5 (10... Nd3 11. a7 Rg1 12. Kb6 $11) 11. Bxd5 Kxd5 12. Kb6 Kd6 (12... Rb2+ 13. Kc7 $13) 13. Kb7 Kd7 (13... Rb2+ 14. Kc8 Ra2 15. Kb7 Kd7 16. a7 Rb2+ 17. Ka8 $11) 14. a7 Rb2+ 15. Ka8 $11) 8. Kb6 Rh6+ $1 9. Kb5 Ne2 $1 10. a7 Nc3+ 11. Ka5 Rh5+ $1 12. Ka6 Nb5 13. Bf7 Rc5 14. a8=Q Nc7+ 15. Kb7 Nxa8 16. Kxa8 Rc7 17. Bb3 Kc5 18. Kb8 Kb6 $19) 7... Rh7 8. Kb6 Rh6+ (8... Nd3 9. a7 $11) 9. Kb5 $1 (9. Kb7 $2 Nd3 10. a7 Nc5+ $19) (9. Ka5 $2 Rh3 (9... Kc5 10. a7 Rh8 11. Ka6 Kc6) 10. a7 Rxb3 11. Ka4 Rb1 $19) 9... Rh3 (9... Nd5 10. Bxd5 Kxd5 11. a7 Rh8 12. Kb6 Kd6 13. Kb7 $11) (9... Ne2 10. a7 (10. Ka5 Nc3 11. a7) 10... Nc3+ 11. Ka5 Rh5+ 12. Ka6 (12. Kb6) 12... Nb5 13. Bd1 (13. Kb6)) 10. a7 $1 (10. Bf7 $2 Ra3 11. Kb6 Nd3 12. a7 Nc5 13. Be8 Ra6+ $19) 10... Rxb3+ 11. Kc6 Rc3+ 12. Kb7 $11 1/2-1/2

[Event "5.p.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Michal Hlinka & Luboš Kekely"] [Result "1/2-1/2"] [FEN "8/5PP1/8/3P3r/1P6/5K2/k5p1/5br1 w - - 0 1"] 
 1. g8=Q $1 (1. Kf4 $2 Rf5+ 2. Kxf5 Bd3+ 3. Kf6 Rf1+ 4. Ke7 g1=Q 5. f8=Q Qa7+ $19) (1. f8=Q $2 Be2+ 2. Ke3 Re1 3. g8=Q Bg4+ 4. Kf4 g1=Q 5. d6+ Re6 6. Qa8+ Kb1 $19) 1... Rf5+ (1... Bc4 2. f8=Q Rf1+ 3. Kxg2 Rxf8 4. Qxf8 $11) 2. Ke4 $1 ( 2. Kg4 $2 Bd3 3. d6 Kb2 4. Kg3 (4. f8=Q Rxf8 5. Qxf8) 4... Rgf1 5. Kxg2 Be4+ 6. Kg3 Rxf7 7. Qh8+ R7f6 8. d7 Rg1+ $19) 2... Bd3+ $1 {sacrifice} (2... Rxf7 3. Qxf7 Bd3+ $1 4. Kxd3 {as main}) 3. Kxd3 Rxf7 4. Qxf7 Rd1+ 5. Kc3 $1 (5. Kc2 $2 g1=Q 6. d6+ Ka1 7. Qf6+ Rd4 $19) 5... g1=Q (5... Rc1+ 6. Kd2 $1 g1=Q 7. d6+ Kb2 8. Qf6+ Ka3 9. Qf3+ Ka2 10. Qf7+ $1 (10. Qa8+ $2 Kb2 11. Qh8+ Kb3 12. Qh3+ Kxb4 13. Qh4+ Rc4 $19) 10... Kb2 11. Qf6+ Kb1 12. Qf5+ Ka2 13. Qf7+ $11 { 3-fold repetition} (13. Qa5+ $2 Kb3 14. Qd5+ Rc4 $19)) 6. d6+ {from battery} Ka1 7. Qf6 $1 Qe3+ $1 (7... Ka2 8. Qe6+ Ka1 9. Qf6 $1 {as main}) 8. Kc2+ { from second battery} Rd4 9. Qf1+ Ka2 10. Qf7+ (10. Qa6+ $2 Qa3 $19) 10... Ka3 11. Qa7+ Kxb4 12. Qb6+ (12. Qb7+ $2 Kc5 13. Qc7+ Kd5 14. Qb7+ Kxd6 $19) 12... Kc4 13. Qc6+ {perpetual check} 1/2-1/2

[Event "sp.p.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Richard Becker"] [Result "1/2-1/2"] [FEN "8/4P3/p4q2/3k1b2/5P2/1K4P1/2B4P/8 w - - 0 1"] 
 1. Be4+ $3 ({Thematic try} 1. e8=Q $2 Qb6+ 2. Kc3 (2. Ka2 Bxc2 $1 $19) 2... Qd4+ 3. Kb3 Qc4+ 4. Ka3 Qc5+ 5. Kb3 Qxc2+ 6. Ka3 Qc1+ 7. Kb4 Qb2+ 8. Ka5 Qa3+ 9. Qa4 Qc5+ 10. Kxa6 Bc8#) 1... Bxe4 {MAIN B} (1... Kxe4 2. e8=Q+ Kd3 3. Qe1 $1 $11) ({MAIN A} 1... Kd4 2. e8=Q Qb6+ 3. Ka4 $1 (3. Ka3 $2 Bxe4 4. Qe5+ Kd3 5. f5 a5 6. f6 Qb4+ $19) (3. Ka2 $2 Be6+ $1 4. Ka1 Qb3 5. Qh8+ (5. Qd8+ Kxe4 6. Qd2 Kf3 $1 $19) 5... Kxe4 6. Qb2 Qa4+ 7. Kb1 Kd3 8. Qf2 Qd1+ 9. Kb2 Bd5 $1 $19) 3... Bxe4 4. Qe5+ Kd3 5. h4 $3 ({Thematic tries} 5. f5 $2 Bf3 $1 6. Ka3 Kc2 $19 ) ({and} 5. g4 $2 Qc6+ $1 6. Ka5 Kc4 7. f5 Qb5+ 8. Qxb5+ axb5 9. f6 Bd5 $1 10. h4 b4 11. h5 b3 12. h6 b2 $19) 5... Qc6+ (5... Bf3 6. Qf5+ $1 Kd4 7. Qc2 $11) ( 5... Bc6+ 6. Ka3 Bf3 7. Qe1 $1 Kc2 (7... a5 8. Qf1+ $11) 8. Qb4 Qe3+ 9. Ka4 Be2 10. Ka5 $11) 6. Ka5 $1 (6. Kb4 $2 Bd5 7. Qf5+ Kd2 $19) 6... Kc4 7. f5 Qb5+ 8. Qxb5+ axb5 9. f6 Bg6 (9... Bd5 10. h5 b4 11. h6 $11) 10. g4 b4 11. h5 Bf7 ( 11... b3 $2 12. hxg6 $18) 12. h6 b3 13. h7 b2 14. h8=Q b1=Q 15. Qc8+ $11) 2. e8=Q Qb6+ 3. Kc3 (3. Ka3 $2 Kd4 $1 {etc.}) 3... Qc5+ 4. Kb3 (4. Kb2 $2 Qb4+ 5. Ka2 Kd4 $1 6. Qe5+ Kd3 7. Qb2 Bd5+ $19) 4... Qc4+ 5. Ka3 Qc3+ 6. Ka2 Qc2+ 7. Ka3 Qc1+ 8. Kb4 (8. Ka4 $2 Bc2+ 9. Ka5 Qa3+ 10. Kb6 Qd6+ $19) 8... Qb2+ 9. Ka5 Qa3+ 10. Qa4 Qc5+ 11. Kxa6 Qc8+ 12. Ka7 Qc7+ 13. Ka8 Qb6 14. h3 $3 {zz} ({ Thematic tries} 14. g4 $2 Bf3 $1 15. Qa3 Ke4 16. Qc3 Kxf4+ $19) ({and} 14. h4 $2 Bf3 $1 15. Qa3 Ke4 16. Qc3 Bg2 17. Qd2 Kf3 18. Qe1 Kg4+ $19) 14... Bf3 15. Qa3 Ke4 16. Qc3 Bg2 17. Qd2 Kf3 18. Qe1 $1 Qc7 19. f5 Qb6 (19... Bxh3 20. Qd1+ Kxg3 21. Qe1+ Kh2 22. Qh4 $11) 20. f6 Qc7 21. f7 Qxf7 22. Kb8 $11 {Logical stud y with systematic maneuver and sacrificial key showing foresight effect. Each of two main lines is solved with a different unique move by the h-pawn.} 1/2-1/2

[Event "3.hm.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Amatzia Avni"] [Result "1/2-1/2"] [FEN "6k1/p2K4/P2P2p1/6Pp/4r3/4q3/8/1R3R1N w - - 0 1"] 
 1. Nf2 (1. Rb8+ $2 Kg7 2. Rff8 Qh3+ $19) 1... Rf4 (1... Re5 2. Rb8+ (2. Ng4 hxg4 3. Rb8+) 2... Kg7 3. Ng4 Qh3 (3... hxg4 4. Rff8 $11) 4. Rb7 $1 Kg8 5. Rb8+ Kg7 6. Rb7 Qxg4+ 7. Kc6+ Kg8 8. Rb8+ Kg7 9. Rb7+ $11) (1... Rd4 2. Ng4 $1 Qxg5 3. Nf6+ Kg7 4. Rbe1 $11 {e.g.} Qa5 5. Ke8 Qb5+ 6. Ke7 Qxa6 7. Ne8+ Kh6 8. Rf6 Qb7+ 9. Kd8 Qb3 10. Ree6 $11) (1... Re8 2. Rbe1 Qxe1 3. Rxe1 Rxe1 4. Nd3 $11) 2. Ng4 $3 {split} hxg4 (2... Rxg4 3. Rfe1 $1 { no Q-checks, as Rg4 blocks the h3-c8 diagonal} ({with Rf1. not} 3. Rbe1 $2 Qxg5 $19) (3. Rb8+ $2 Kg7 4. Rbf8 (4. Rff8 Qd4 $19) 4... Qb3 $19) 3... Qxg5 4. Rb8+ Kf7 (4... Kh7 $4 5. Re7+ Kh6 6. Rh8# {self block}) 5. Re7+ Qxe7+ 6. dxe7 Rd4+ 7. Kc6 Kxe7 8. Rb7+ Kf6 9. Rxa7 $11) (2... Rxf1 $2 3. Rb8+ $18) 3. Rbe1 $1 { Now with this rook; no Q-checks, as pawn g4 blocks the h3-c8 diagonal} Rf7+ ( 3... Qd2 4. Re8+ $11) 4. Rxf7 Qxe1 5. Re7 $1 Qa5 6. Re8+ Kf7 7. Re7+ $11 { Theme: change: 2...R:g4 3.Rfe1!; 2...h:g4 3.Rbe1!} 1/2-1/2

[Event "4.hm.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Alexey Gasparyan"] [Result "1/2-1/2"] [FEN "2q3k1/2np1Rp1/1P1K4/1B2Pr2/1Pp4N/8/8/8 w - - 0 1"] 
 1. Rxg7+ $1 (1. bxc7 $2 Rxf7 $19) (1. Rxf5 $2 Nxb5+ $19) ( 1. Nxf5 $2 Nxb5+ $1 2. Ke7 Nd4 $3 3. Nxd4 Qb8 $1 (3... Qb7) 4. e6 $6 dxe6 5. Nxe6 Qb7+) 1... Kf8 $1 (1... Kxg7 2. Nxf5+ Kf7 3. bxc7 $11) 2. bxc7 (2. Bxd7 $2 Ne8+ $19) (2. Nxf5 $2 Nxb5+ 3. Kd5 Qc6#) 2... Rf1 $1 (2... Rf2 3. Rg2 $1 Rf1 4. Ng6+ Ke8 5. Ne7 (5. Nf4 Rd1+ 6. Nd5) 5... Rd1+ 6. Nd5 Rxd5+ 7. Kxd5 Qxc7 $11 8. Re2 c3 9. Bd3) 3. Rg8+ $1 (3. Bxd7 $2 Rd1+ 4. Kc6 Qa6+ $19) (3. Rxd7 $2 Rd1+ 4. Ke6 Rxd7 $19) 3... Kxg8 4. Bxc4+ Rf7 (4... Kf8 5. Bxf1 Qb7 6. Kxd7 $132) 5. Ng6 $1 (5. Bxf7+ $2 Kxf7 6. e6+ dxe6 $19) 5... Kg7 (5... Qxc7+ 6. Kxc7 d5+ 7. Kd6 dxc4 8. e6 $1 $11) 6. Bxf7 Kxf7 7. e6+ $3 (7. Nf4 $2 Qe8 8. b5 Qe7+ 9. Kd5 Qf8 $1 10. b6 (10. Ke4 Qc5 11. b6 Ke8 12. Nd5 Qc6 $19) 10... Qa8+ $19) 7... Ke8 $3 (7... dxe6 8. Ne5+ $11) (7... Kf6 8. exd7 Qa6+ 9. Kc5 $1 Qa7+ 10. Kc6 Qa6+ 11. Kc5 $11) (7... Kxg6 8. exd7 Qa6+ 9. Kc5 $1 Qa7+ 10. Kc6 Qa6+ 11. Kc5 $11) 8. b5 $1 dxe6 9. Ne5 $1 Qb7 $1 (9... Qa8 10. Kxe6 $1 Qb7 11. Kd6 Qb6+ 12. Nc6 Qb7 $11 ) 10. Nc6 $1 Qc8 11. Ne5 $1 $11 1/2-1/2

[Event "5.hm.13th UAPA sec.B.2.draw "] [Date "2020"] [White "Jarl Henning Ulrichsen"] [Result "1/2-1/2"] [FEN "4K3/k7/8/4p3/8/3P2b1/4P3/8 w - - 0 1"] 
 1. Kf7 $1 {This is the only move that lets White obtain the opposition so that Black is forced to play Bg3â (+)h2. If Black has the opposition with his Bishop on g3 then White is lost.} ({A.} 1. Kd7 $2 Kb6 2. Kd6 e4+ 3. Kd5 e3 4. Ke4 Bf2 $19) ({B.} 1. Ke7 $2 Kb6 2. e3 Kc7 $1 {(opposition)} 3. Ke6 Kc6 4. Kf6 (4. Kf5 Kd5 5. Kg4 Bh2 (5... Bf2 6. Kf3 Bg1 $19 (6... Be1) (6... Bh4)) 6. Kf3 Bg1 $1 $19) 4... Kd5 (4... Kd6) 5. Kf5 Bf2 (5... Be1) (5... Bh4) 6. d4 e4 7. Kf4 Bg1 $19) 1... Kb6 2. e3 (2. Ke6 $2 Kc5 3. e3 Kc6 $1 $19 {(opposition)}) 2... Kb7 (2... Kc5 $2 3. d4+ $11) (2... Kb5 3. Kf6 $1 Kc6 4. Ke6 $1) 3. Kf6 $1 {Now White threatens to play d4 followed by Kf5.} (3. Ke7 $2 Kc7 {(opposition)} 4. Ke6 Kc6) (3. Kg6 $2 Kc6 {(opposition)} 4. Kf5 Kd5) 3... Kc6 4. Ke6 $1 { Finally White has the opposition!} Bh2 (4... Kc5 5. d4+ $11) 5. Kf5 Kd5 6. Kg4 Ke6 (6... Bg1 7. Kf3 $11) 7. Kf3 Kf5 8. Kg2 $11 { and the Black bishop is trapped.} 1/2-1/2

[Event "sp.hm.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Richard Becker"] [Result "1/2-1/2"] [FEN "8/3n4/4K1B1/2N4P/8/5pPk/2r5/8 w - - 0 1"] 
 1. Ne4 $1 (1. Kxd7 $2 Rd2+ $19) (1. Bxc2 $2 Nxc5+ $19) (1. Nxd7 $2 Re2+ $19) ({ 1st thematic try} 1. Nd3 $2 Nc5+ $1 2. Kf6 {(or Kf7)} Nxd3 3. Bxd3 Rd2 4. Bc4 Rd4 5. Bb5 ({Not} 5. Be2 $2) 5... Rd5 6. Bf1+ Kg4 7. h6 Rd6+ 8. Kg7 Kg5 9. h7 Rd7+ 10. Kg8 Kg6 $19) 1... Nc5+ 2. Kf7 $1 ({2nd thematic try} 2. Kf6 $2 Nxe4+ 3. Bxe4 f2 4. Bf5+ (4. Bd3 Rd2 5. Bb5 Rd6+ $1 6. Kg7 Rd5 7. Bf1+ Kg4 8. h6 Kg5 9. h7 Rd7+ 10. Kg8 Kg6 $19) 4... Kg2 $1 5. Be4+ (5. Bd3 Kf3 {(or Rd2)-+}) 5... Kf1 $1 6. h6 (6. Bxc2 Ke2 $19) (6. Bd3+ Re2 7. h6 Ke1 8. Bxe2 Kxe2 9. h7 f1=Q+ 10. Kg7 Qa1+ $19) 6... Re2 7. Bf5 Kg2 8. h7 f1=Q 9. h8=Q Qa1+ $19) 2... Nxe4 3. Bxe4 f2 (3... Re2 4. Bxf3 $1 $11) 4. Bf5+ $1 ({3rd thematic try} 4. Bd3 $2 Rd2 5. Bc4 Kg4 6. h6 Kg5 7. h7 Rd7+ 8. Kg8 Kg6 9. Bf7+ Rxf7 10. h8=Q f1=Q $19) 4... Kxg3 (4... Kg2 5. Be4+ (5. Bd3) 5... Kf1 6. Bd3+ (6. Bxc2 Ke2 7. h6 f1=Q+ 8. Kg8 $11) 6... Ke1 7. h6 Re2 8. Bxe2 Kxe2 9. h7 f1=Q+ 10. Kg8 $11) 5. Bd3 Rd2 6. Bc4 Rd4 7. Be2 Rd2 (7... Rd6 8. Kg7 Kf4 9. h6 Kg5 10. h7 Rd7+ 11. Kg8 Kg6 12. Bh5+ $1 Kg5 13. Be2 Kg6 14. Bh5+ Kxh5 15. h8=Q+ Kg6 16. Qh4 $11) 8. Bc4 Rd6 9. Kg7 Rd7+ 10. Kg6 Rd6+ 11. Kg7 Kg4 12. h6 Kg5 13. h7 Rd7+ 14. Kg8 Kg6 15. Bf7+ $1 Kg5 16. Bc4 Kg6 17. Bf7+ Rxf7 18. h8=Q Re7 19. Kf8 Rf7+ 20. Kg8 f1=Q 21. Qh7+ $1 Rxh7 {stalemate. Synthesis of three thematic tries from two old studies } 1/2-1/2

[Event "c. 13th UAPA sec.B.2.draw"] [Date "2020"] [White "Daniele Gatti"] [Result "1/2-1/2"] [FEN "q7/pkPp2BB/p2P2K1/P2P3p/7p/8/8/8 w - - 0 1"] 
 1. Kf6 $1 (1. Kf7 $2 Kc8 $1 2. Bd3 Qxd5+ $1 $19) 1... h3 (1... Qe8 2. Bf5 $1 Kc8 3. Bd3 $1 Kb7 $11 {positional draw}) (1... Kc8 $2 2. Bd3 $1 Kb7 3. Ke7 $18) 2. Bf5 (2. Ke7 $2 h2 $1 3. Be4 Qg8 $1 4. Bf6 h4 $1 5. Kxd7 h1=Q 6. Bxh1 Qf7+ $1 7. Be7 Qf5+ $1 8. Kd8 Qc8#) 2... h2 (2... Qe8 3. Bxh3 $1 Kc8 4. Bf1 $1 Kb7 $11 {positional draw}) 3. Bxd7 h1=Q 4. Bc6+ Kc8 5. Bxa8 Qf3+ 6. Ke6 $1 (6. Ke7 $2 Qe4+ $1 7. Kf7 Qh7 $1 8. Bc6 h4 $1 9. d7+ Kxc7 10. d6+ Kd8 $19) (6. Kg5 $2 Qg3+ $1 7. Kf5 Qxg7 $19) 6... Qh3+ 7. Kf6 Qf3+ (7... Qc3+ 8. Kf7 $1 Qg3 9. Bf8 $1 $11 {positional draw}) 8. Ke6 Qg4+ (8... Qe4+ 9. Be5 $11 {positional draw}) 9. Kf6 Qf4+ 10. Ke6 Qg4+ 11. Kf6 h4 (11... Qg3 12. Bf8 $1 h4 13. Bc6 $1 h3 14. d7+ $1 Kxc7 15. Be7 $1 Qf4+ (15... Qh4+ 16. Kf7 $1 $11) 16. Kg6 $1 Qe4+ $11) 12. Bc6 h3 13. d7+ $1 Kxc7 14. Kf7 $1 Qf5+ (14... h2 $2 15. Be5+ $1 Kd8 16. Bf6+ $1 Kc7 17. d8=Q# $18) 15. Bf6 $1 (15. Ke7 $2 Qe4+ $1 16. Kf7 Qh7 $1 17. d6+ Kd8 $1 $19) 15... Qh7+ $11 {perpetual check} 1/2-1/2

[Event "c. 13th UAPA sec.B.2.draw"] [Date "2020"] [White "Poul Rewitz"] [Result "1/2-1/2"] [FEN "4n2k/p7/4K3/6P1/P5PB/6Pr/8/8 w - - 0 1"] 
 1. Ke7 (1. Kf7 $2 Nd6+ $19) (1. Kd7 $2 Ng7 $19) 1... Kg7 $1 (1... Nc7 2. Kf7 Rh1 3. g6 Rf1+ 4. Bf6+ Rxf6+ 5. Kxf6 $11) (1... Ng7 2. Kf7 Rh1 3. g6 Rf1+ ( 3... Rb1 4. Bf6 Rb7+ 5. Kf8 $11) 4. Bf6 a5 5. g5 $11) 2. Kxe8 Rh1 3. Kd7 (3. g6 $2 Ra1 $19 ({or} 3... Re1+ 4. Kd7 Ra1 $19)) 3... Ra1 4. Kc6 Rxa4 5. Kb5 Re4 ( 5... Rxg4 6. Ka6 ({or} 6. Ka5 $11) 6... Ra4+ 7. Kb5 Ra1 8. Kb4 a6 9. Kb3 Kg6 10. Kb4 Kf7 11. Kb3 Kg7 12. Kb4 Kg6 13. Kb3 a5 14. Kb2 $11) (5... Ra1 6. g6 $11 ) 6. Ka6 (6. g6 $2 Rxg4 $1 7. Ka6 Ra4+ 8. Kb5 Ra3 $19 ({or} 8... Ra1 $19)) 6... Re6+ (6... Re7 7. g6 $11) 7. Kxa7 Rg6 8. Ka8 $1 (8. Kb8 $2 Kf8 9. Kb7 (9. Ka8 Ke8 10. Ka7 Ke7 11. Kb7 Kd7) 9... Kf7 10. Kc8 Ke8 $1 11. Kc7 Ke7 12. Kc8 Kd6 13. Kb7 Kd7 14. Kb8 Kc6 15. Ka7 Kc7 16. Ka8 Ra6#) 8... Kg8 9. Ka7 Kf8 10. Kb8 Kf7 11. Kb7 Ke8 12. Kc8 ({or} 12. Ka8 Kd8 13. Kb8 Rb6+ 14. Ka7 Kc7 15. g6 $11) 12... Ke7 13. Kc7 $11 1/2-1/2

[Event "sp.c.13th UAPA sec.B.2.draw"] [Date "2020"] [White "Marc Gelly"] [Result "1/2-1/2"] [FEN "8/6pR/6Pb/N1p3pK/1p3p2/4p1P1/k7/1N6 w - - 0 1"] 
 1. Nb3 $3 ({Try:} 1. Rh8 $2 fxg3 $1 2. Rd8 Kxb1 3. Rd1+ Kc2 4. Rg1 e2 $19) 1... e2 $1 (1... Kxb3 2. g4 $1 (2. gxf4 $1 e2 3. Nd2+ Kc2 4. Nf3 b3 5. fxg5 b2 6. gxh6 b1=Q 7. hxg7 Qh1+ 8. Kg4 Qg2+ 9. Kf4 Qxg6 10. Rh2 Qf6+ 11. Ke3 Qxg7 12. Rxe2+ $11) 2... e2 (2... f3 3. Rh8 $11) 3. Nd2+ Kb2 4. Nf3 c4 5. Rh8 c3 6. Ne1 f3 7. Rf8 $11 b3 8. Rxf3 Ka2 9. Rf8 b2 10. Ra8+ $11) (1... Kxb1 2. Kg4 $1 (2. gxf4 $2 e2 3. Nd2+ Kc1 4. Nf3 b3 5. fxg5 b2 6. gxh6 b1=Q 7. hxg7 Qf5+ $19) 2... Kc2 3. Rxh6 $11) (1... fxg3 2. Nc1+ (2. Kg4 g2 3. Nc1+ Kxb1 4. Ne2 b3 5. Rxh6 b2 6. Rh8 Kc2 7. Rb8 b1=Q 8. Rxb1 Kxb1 9. Kf3 $11) 2... Kxb1 3. Ne2 g2 4. Rxh6 Kc2 5. Kg4 b3 6. Rh8 b2 7. Rb8 b1=Q 8. Rxb1 Kxb1 9. Kf3 Kc2 10. Kxe3 $11) 2. Nc1+ $1 (2. Nc3+ $2 Kxb3 $1 (2... bxc3 $1 3. Nc1+ Kb2 4. Nxe2 f3 5. Rh8 g4 $19) 3. Nxe2 f3 $19) 2... Kxb1 3. Nxe2 f3 $1 4. Nc3+ $1 (4. Rh8 $2 g4 $1 $19 (4... fxe2 $1 5. Re8 g4 6. Rxe2 c4 7. Re4 c3 8. Rxb4+ Ka2 $19)) 4... bxc3 (4... Kc2 5. g4 (5. Rh8 g4 6. Ne4 $11) 5... f2 6. Nd1 $1 b3 7. Rh8 f1=N $1 (7... b2 8. Rb8 b1=Q 9. Rxb1 Kxb1 10. Nxf2 $11) 8. Ne3+ $1 Nxe3 9. Rc8 $1 $11) 5. g4 $1 (5. Rh8 $2 g4 $1 $19) 5... f2 6. Rh8 f1=Q 7. Rb8+ Kc2 8. Rb2+ Kd3 9. Rd2+ Kc4 10. Rd4+ Kb5 11. Rb4+ Kc6 12. Rb6+ Kd5 13. Rd6+ Kc4 14. Rd4+ Kb3 15. Rb4+ Kc2 16. Rb2+ $11 {Theme:Self-incarceration. Compound move: 4.Nç3+!! "Tour folle".} 1/2-1/2