www.arves.org - UAPA 16th 2021

Studies awarded for the UAPA 16th 2021 tournament

also the Jose Copie 80th Jubilee Ty.

Copie, José 1941

Section A: Studies up to 8 pieces. A1. Win

[Event "1.p. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Arpad Rusz"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/3k4/3r4/1P3P2/3b4/8/3K4/3Q4 w - - 0 1"] [PlyCount "25"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN} 1. Qa4 $1 ({Thematic try:} 1. Qg4 $2 Bf6+ 2. Ke3 Rb6 3. Qa4 Ke8 $1 4. Ke4 Bd8 {fortress} 5. f6 Bxf6 6. Kd5 Be7 (6... Bg5) 7. Kc4 Bg5 8. Kc5 Be3+ 9. Kd5 Bg5 10. Kc5 (10. Qe4+ Be7 11. Kc4 Kd7 $11) 10... Be3+ $1 (10... Bd8 $2 11. Qe4+ Kd7 12. Qd5+ Kc8 13. Qxd8+ $1 { queen sacrifice} Kxd8 14. Kxb6 Kc8 15. Ka7 $18) 11. Kd5 Bg5 {positional draw}) 1... Bb6+ 2. Kc3 Rf6 3. Qg4 $1 Kc8 $1 4. Kc4 Bd8 {A fortress? No!} 5. b6 $1 Bxb6 (5... Rxb6 6. f6+ $18) 6. Kd5 (6. Qg6 $2 Bd8 $1 $11 (6... Rxg6 $2 7. fxg6 $18)) 6... Bc7 (6... Bd8 7. Ke5 Be7 8. Qg7 Kd7 9. Qxf6 $1 Bxf6+ 10. Kxf6 Ke8 11. Kg7 $18) 7. Ke4 Ba5 8. Ke5 Bc3+ $1 (8... Bd8 9. Qc4+ Kd7 10. Qd5+ Ke8 11. Qxd8+ $1 {queen sacrifice} Kxd8 12. Kxf6 Ke8 13. Kg7 $18) 9. Kd5 Ba5 { Is this a positional draw similar to that from the thematic try? No! Now the extra h-file proves to be useful for some threats by the queen.} 10. Qc4+ $1 Bc7 11. Qc3 $1 (11. Ke4 $2 Kd7 $11) 11... Rxf5+ 12. Kc6 Be5 13. Qh3 $1 $18 1-0

[Event "2.p. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021.09"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/kP3K2/2P5/1n6/5N2/8/3b4/1N6 w - - 0 1"] [PlyCount "21"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN} 1. Ne6 $1 { Prevents Nd4 and moving the knight to better place} (1. Nxd2 $2 Nd4 $11) 1... Nd6+ (1... Bf4 2. Ke8 Bb8 3. Kd7 Nd6 4. Nc5 $18) (1... Be1 2. Ke7 $18) (1... Bb4 2. Ke8 $1 Nd6+ 3. Kd7 Nxb7 {is as main line}) 2. Ke7 Bb4 { Moving the bishop from an attack and preparing for the capture of b7 pawn} ( 2... Nxb7 3. Nxd2 Na5 4. c7 $18) 3. Kd7 $1 Nxb7 4. Na3 $3 { First sacrifice on a3 (which black can't accept)} (4. c7 Nd6 $11 { with Ba5 threat}) 4... Nd6 (4... Bxa3 5. c7 Nd6 6. Nd4 $1 Kb7 7. Nb5 $1 Nc8 8. Nxa3 Nb6+ 9. Kd8 $18) 5. Nd4 $1 (5. Nc7 $2 Bxa3 $11) (5. Nc2 $6 Nc4 $1 6. Nxb4 Ne5+ $13) 5... Ka8 $1 ({Still a3 untouchable} 5... Bxa3 6. c7 $1 Kb7 7. Nb5 $18 ) (5... Kb6 6. c7 Bxa3 7. Nf5 $1) 6. Ndb5 $1 ({Thematic try :} 6. Nab5 $2 Nc4 $1 7. Nc7+ Ka7 8. Ndb5+ Kb6 $1 9. Nd5+ Kc5 $3 (9... Kxb5 $2 10. c7 $18) 10. c7 Kxd5 $11) (6. c7 Ba5 $1 $11) 6... Nxb5 7. Nxb5 Ba5 8. Kc8 Bb4 9. Na3 $3 { Again - kni ght sacrifice on the same square. This time unexpected move with the knight backward. Looks strange, but I didn't find any study in this basic position. This is the only winning move. Other moves will only waste time and White needstoreturntothisposition} (9. Nd4 $2 Be1 10. Nb5 Bb4 $11) (9. Kc7 $5 Ba5+ 10. Kc8 (10. Kd7 Kb8 $11) 10... Bb4 $11) (9. Kd7 $5 Ba5 $11) 9... Be1 ({ Again - the knight is untouchable} 9... Bxa3 10. Kd7 $1 Bd6 11. Kxd6 Kb8 12. Kd7 $18) 10. Kd7 $1 (10. Kd8 $2 Ba5+ {returns back} 11. Kc8 $11) (10. Nc4 $2 Bg3 11. Kd7 Bb8 $1 $11) 10... Ba5 (10... Bg3 11. Nb5 $1 $18 {and Nd6}) 11. Nc4 $18 1-0

[Event "4.p. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021.01.07"] [Round ""] [White "Sergey Osintsev"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "4B3/4P3/k4K2/8/8/8/4n3/4r3 w - - 0 1"] [PlyCount "39"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN} 1. Bb5+ $1 Kxb5 2. e8=Q+ Kc4 3. Qe4+ (3. Qe3 $2 Rf1+ $1 $11) (3. Qa4+ $2 Kd3 $1 $11) 3... Kc3 4. Qe3+ Kc2 5. Ke7 $3 (5. Ke5 $2 Nc1 (5... Ng1) (5... Nd4) (5... Nf4) 6. Qxe1 Nd3+ $11) (5. Ke6 $4 Nd4+ $19 (5... Nf4+)) (5. Kf5 $2 Rf1+ $1 $11) 5... Kd1 6. Qd3+ Kc1 7. Kf6 $1 Ng1 ( 7... Rf1+ 8. Ke5 Re1 9. Kf5 $18) 8. Kf5 (8. Qc3+ $2 Kd1 9. Qd3+ $11) 8... Ne2 ( 8... Rd1 9. Qc3+ Kb1 10. Ke4 $1 Ne2 11. Qb3+ Kc1 12. Qc4+ Kd2 13. Qa2+ Ke1 14. Qa5+ $1 Kf1 15. Qf5+ Kg1 16. Qg4+ Kf2 17. Qf3+ Ke1 18. Ke3 $18) 9. Kg5 $1 (9. Kg4 $5 Rg1+ $11) 9... Rg1+ (9... Ng1 10. Kf4 Ne2+ 11. Kf3) 10. Kf6 $3 Rf1+ 11. Ke5 Re1 12. Kf5 $1 Rf1+ (12... Ng1 13. Kf4 Ne2+ 14. Kf3 $18) 13. Ke4 Re1 (13... Rf6 14. Qc4+ Kd2 15. Qa2+ Kc3 16. Qa1+ $18) 14. Kf3 $1 Ng1+ 15. Kf2 Rd1 16. Qc3+ Kb1 17. Ke3 Rc1 18. Qb3+ Ka1 19. Kd2 $18 {win} Rb1 20. Qa3# 1-0

[Event "1.hm. UAPA 16th (tt) JT80 J.Copie"] [Site "16th UAPA"] [Date "2021"] [Round ""] [White "Itay Richardson"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/2p4N/1pbP4/5k2/3K4/8/8/7N w - - 0 1"] [PlyCount "29"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN} 1. Ng3+ (1. dxc7 $2 Bb7 2. Nf8 (2. Ng3+ Ke6 3. Nf8+ Kd6 $10) 2... Kf6 3. Ng3 Ke7 4. Ng6+ Kd7 $10) 1... Ke6 2. Nf8+ $1 ( 2. dxc7 $2 Kd7 $10) 2... Kf7 ({Main} 2... Kxd6 3. Nf5# $1) 3. dxc7 Bb7 4. Nd7 ( 4. Nh7 $2 Ke6 $10 {White can't stop the Black king from capturing the pawn}) 4... Ke7 {/e6} 5. Nxb6 Kd6 6. Na8 $1 ({Thematic try:} 6. Nd5 $2 Kd7 7. Kc5 Bxd5 8. Kb6 Be6 $10) 6... Kd7 7. Kc5 Bxa8 8. Kb6 Bd5 9. Nf5 Bc4 ({Main} 9... Be6 10. Kb7 Ke8 11. Ng7+ $18) 10. Nd6 $1 (10. Ne7 $2 Ba6 $1 $10) 10... Ba6 $1 11. Nb7 ( 11. Kxa6 $2 Kxc7 $10) 11... Bf1 {/e2} (11... Kc8 12. Nc5 Bf1 13. Ne4 $18 { transposes to the main line}) 12. Nc5+ Kc8 13. Ne4 {threatening Sd6+} Ba6 14. Nf6 Bb5 ({Main} 14... Bc4 15. Ne8 $18 {There is no way to stop Sd6}) 15. Nd5 $18 {There is no way to stop Se7} 1-0

[Event "3.hm. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Janos Mikitovics, & Mario G"] [Black "Twin: A"] [Result "1-0"] [SetUp "1"] [FEN "1N6/k7/4p1n1/8/7P/7K/8/2N5 w - - 0 1"] [PlyCount "15"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN A) Diagram B) bNg6=>e5} 1. Nc6+ $1 (1. h5 $2 Nf4+ $1 {fork} 2. Kg4 Nxh5 $11 {active sacrifice}) (1. Nd7 $2 Nxh4 { active sacrifice} 2. Kxh4 e5 $3 {active sacrifice} 3. Nf6 e4 $1 { active sacrifice} 4. Ng4 e3 $1 $11 {active sacrifice}) 1... Kb6 2. Nd4 Kc5 3. Nce2 $3 {White is forbidden to accept passive sacrifice on e6!} (3. Nxe6+ $2 Kd6 $11) ({Thematic try} 3. Nf3 $2 Nxh4 $3 {active sacrifice} (3... Kc4 $2 4. Kg3 $1 Nxh4 5. Nxh4 $3 e5 6. Nf5 e4 7. Ne3+ $18) 4. Nxh4 e5 $1 5. Nf5 e4 6. Kg3 e3 $11) 3... Nxh4 (3... Kc4 4. h5 $18) 4. Kxh4 Kc4 5. Kg3 $3 e5 6. Nf5 $1 (6. Nc2 $2 Kd3 $1 $11 {skewer} (6... e4 $2 7. Ne3+ $18 {main line})) 6... e4 7. Ne3+ $1 (7. Kf2 $2 e3+ $1 $11 {active sacrifice}) 7... Kd3 8. Kf2 $18 { Keywords: passive and active sacrifices; fork; Troitsky line} 1-0

[Event "3.hm. UAPA 16th (tt) JT80 J.Copie"] [Site "-"] [Date "2021"] [Round ""] [White "Janos Mikitovics, & Mario G. Garcia"] [Black "Twin: B"] [Result "1-0"] [SetUp "1"] [FEN "1N6/k7/4p3/4n3/7P/7K/8/2N5 w - - 0 1"] [PlyCount "23"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN} 1. Nc6+ $1 ({Thematic try} 1. Nd7 $2 { active sacrifice (11th WCCT)} Nxd7 $1 (1... Ng6 $2 2. Nc5 Nxh4 3. Kxh4 e5 4. Ne4 $18 {Troitsky line}) 2. h5 Kb7 (2... e5 $2 3. h6 $1 Nf6 4. Kh4 $1 Kb6 5. Kg5 Nh7+ 6. Kg6 Nf8+ 7. Kf5 $18) 3. h6 Nf8 4. Kg4 Kc7 (4... e5 $2 5. Kf5 e4 6. Kxe4 $18) 5. Kg5 e5 $1 6. Kf6 e4 $1 (6... Kd7 $2 7. Nd3 e4 8. Nc5+ $18 {fork}) 7. Kf7 Nh7 8. Kg7 Ng5 9. Kg6 Ne6 10. Kf5 (10. h7 Nf8+ $18 {fork}) 10... Nf8 11. Kxe4 Kd7 12. Kf5 Ke7 $11) 1... Nxc6 2. h5 $1 (2. Kg4 $2 Ne5+ $1 {switchback} 3. Kg5 (3. Kf4 Ng6+ $18 {fork}) 3... Nf3+ $11 {fork}) (2. Nd3 $2 Ne7 $1 (2... e5 $2 3. Nf2 $1 $18) 3. h5 Ng8 $1 4. Kh4 Kb7 {/b6} 5. Kg5 Kc7 {/c6} 6. Kg6 Kd6 7. Kg7 Ne7 8. Nf4 Nf5+ 9. Kf6 Kd7 10. Nxe6 Nh6 11. Nf4 Ng4+ 12. Kg5 Ne5 13. Ng6 Nf7+ 14. Kf6 Nh6 15. Ne5+ Ke8 16. Kg6 Ng8 17. Kg7 Ne7 18. h6 Nf5+ {fork}) 2... Ne5 {switchback} 3. Kg3 $1 (3. Kh4 $2 Nf7 $11) 3... Kb6 (3... Nf7 4. Kf4 $1 (4. Nd3 $2 e5 $1 $11) 4... Kb6 5. Nd3 $18 {main line}) 4. Kf4 Nf7 5. Nd3 Kc7 6. Ne5 $1 {Umnov} Nh6 7. Kg5 $1 (7. Ng4 $2 Nf7 $1 8. Ne5 $18 {loss of time}) 7... Nf5 8. Kf6 $1 (8. Kg6 $2 Kd6 9. Kf6 Kd5 10. Nf3 Ke4 11. Nh4 {active sacrifice} Nh6 $1 12. Kg5 Nf7+ $11 (12... Ng8 $2 13. Ng6 $1 e5 (13... Kd5 14. Ne7+ $18 { active sacrifice}) 14. Ne7 $3 $18 {active sacrifice})) 8... Kd6 (8... Kd8 9. Kf7 $1 $18 (9. Kxe6 $2 Ng7+ $11 {fork}) (9. Nc4 $2 Ke8 $1 $11 (9... Kd7 $2 10. Kf7 $18))) 9. Nc4+ $1 ({Thematic try} 9. Ng4 $2 Kd5 $1 (9... Kc5 $2 10. Nh2 $3 Kd4 11. Nf1 $18 {main line}) 10. Nh2 Ke4 11. Kg5 Nd6 $1 (11... Ke5 $2 12. Nf1 Kd6 13. Kf6 $1 (13. Ng3 $2 {/Se3? active sacrifice} Ke7 $1 $11) 13... Kd7 14. Kf7 $18) 12. Ng4 Kd4 $3 (12... Nf5 $2 13. Nf6+ Ke5 14. Ne8 Ke4 15. Ng7 $3 $18 { active sacrifice}) 13. Kf6 Nf5 $1 14. Nf2 Ke3 $1 $11 (14... Kd5 $2 15. Nh1 $3 Ke4 (15... Kd6 16. Ng3 $3 $18 {active sacrifice}) 16. Ng3+ $3 $18 { active sacrifice / main line})) 9... Kc5 (9... Kd7 10. Kf7 $18 (10. Ne5+ $2 Ke8 $11)) 10. Nd2 $1 ({Thematic try} 10. Ne5 $2 Kd5 $1 (10... Kd4 $2 11. Nc6+ $1 Ke4 12. Kg5 Kd5 13. Ne7+ $18 {active sacrifice}) (10... Kd6 $2 11. Nc4+ $1 { main line}) 11. Ng6 Ke4 $1 (11... Kd6 $2 12. Nh4 $3 $18 {active sacrifice}) 12. Nh4 $1 {active sacrifice} Nh6 $1 13. Kg7 Ng4 $11) 10... Kd4 11. Nf1 $1 ({ Thematic try} 11. Nb3+ $2 Ke3 (11... Ke4 $2 12. Kg5 Kd5 13. Nd2 Ke5 14. Nf1 Kd6 15. Kf6 Kd7 16. Kf7 Kd6 17. Ne3 $3 $18 {active sacrifice}) 12. Nc5 Kf4 $1 13. Nxe6+ Kg4 14. Ng7 Nh6 $1 15. Kg6 Ng8 16. Kf7 Nh6+ 17. Kf6 Nf5 $3 $11 { active sacrifice}) (11. Kxe6 $2 Ng7+ $1 $11 {fork} (11... Nh6 $2 12. Kf6 Ke3 13. Kg5 $3 Nf7+ 14. Kg6 Kf4 15. Nc4 $1 Nh8+ $1 16. Kf6 $3 (16. Kg7 $2 Nf7 17. Kg6 $1 Nh8+ 18. Kf6 {loss of time}) 16... Nf7 $1 {active sacrifice} 17. Ne3 $3 $18 {active sacrifice})) 11... Ke4 12. Ng3+ $18 {active sacrifice [Keywords: - the theme of the 11th WCCT; - Task = mutual active sacrifices; - forks; - switchback - Troitsky line. .]} 1-0

[Event "5.hm. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Paavo Tikka"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "6k1/p5P1/7P/n7/P7/5K2/P7/8 w - - 0 1"] [PlyCount "49"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN Duel wK vs bN} 1. Ke4 $1 Nc6 2. Kd5 (2. Kf5 $2 Kf7 $11) 2... Nb4+ $1 { Knight must threat to capture a2-pawn to stop white attack on the Q-side.} ( 2... Ne7+ 3. Kd6 Nf5+ 4. Kc6 Nxh6 5. a5 Kxg7 6. Kb7 $18) 3. Ke6 $1 {!} (3. Kc5 $2 {?} Nxa2 4. Kc6 (4. Kb5 Nc3+ {!}) 4... Nc1 {!} 5. Kb7 (5. a5 Nb3 6. a6 Nd4+ $1 7. Kb7 Nb5 $11) 5... a5 6. Kb6 Nb3) (3. Ke5 $2 Kf7 $11) 3... a5 $1 { ! Prevents white gaining tempo for Q-side attack with a4-a5.} (3... Nxa2 4. Kf6 Nc3 5. Kg6 $18) (3... Nd3 4. a5 $1 a6 5. a3 Nc5+ (5... Nb2 6. Kd5) 6. Ke7 {!} Ne4 (6... Nb7 7. Kf6 Kh7 8. Kf7 Nd8+ 9. Ke7 Nc6+ 10. Kf8 $18) 7. Kd7 Nf6+ 8. Kc6 Kh7 9. Kb6 Kxh6 10. Kxa6 Kxg7 11. Kb7 $18) 4. Ke7 $1 (4. Kf6 $2 {<main try> } Nd3 $1 {White is in Zugzwang and can't gain tempo anymore.} 5. Ke7 Nc5 $1 6. Kf6 Nd3 7. Ke6 Nc5+ 8. Ke7 Ne4 $1 9. Ke6 Nc5+ 10. Kf6 Nd3 $11) (4. a3 $2 { Now black knight can safely defend a5 from b3.} Nd3 $1 5. Kd5 Kf7 6. Kc4 Nc1 7. Kb5 Nb3 $11) 4... Nd5+ 5. Kd6 (5. Kd7 {wins also because} Nb6+ (5... Kf7 6. Kc6 $18 {wins}) 6. Ke6 {leads to main line}) 5... Nb6 $1 {By threatening to capture a4 black can still stop whites Q-side attack. Capturing a2 is a tempo slower.} (5... Nc3 {<main>} 6. Ke6 Ne4 (6... Ne2 7. Kf6 Nf4 8. h7+ $1 Kxh7 9. Kf7) 7. Kf5 $1 (7. Kd5 $2 Nc3+ 8. Ke6 {delays win}) 7... Nd6+ 8. Kg6 $18 { and mate in 1}) (5... Nb4 6. Kc5 Nxa2 7. Kb5 Nc3+ 8. Kxa5 Kh7 9. Kb4 Nd5+ 10. Kc5 Ne7 11. a5 Kxh6 12. a6 Kxg7 13. a7 $18) 6. Ke6 (6. Kc5 $2 Nxa4+ 7. Kc4 Nb6+ 8. Kb5 Nd5 9. Kxa5 Ne7 10. a4 Kh7 11. Kb6 Kxh6 12. Kb7 Kxg7 13. a5 Nf5 14. a6 Nd6+ $11) 6... Nc4 (6... Nxa4 7. Kf6 $18) 7. Kf6 Kh7 8. Kf7 Ne5+ 9. Kf8 $1 (9. Ke6 $2 Ng4 10. Kd6 Nxh6 11. Kc6 Kxg7 $11 { draws because black is one tempo ahead of the main line}) 9... Ng6+ 10. Ke8 Ne5 11. Kd8 Ng4 12. Kc7 Nxh6 13. Kb6 Kxg7 14. Kxa5 Kf6 15. Kb6 Ke6 16. a5 Nf5 ( 16... Kd7 17. a6 $1 {!} Kc8 18. a7 $18) 17. a6 Nd6 18. a7 Nc8+ 19. Ka6 (19. Kb7 {also}) 19... Nxa7 20. Kxa7 Kd6 21. Kb6 {!} Kd7 22. Kb7 Kd6 23. a4 Kc5 24. a5 Kb5 25. a6 $18 1-0

[Event "sp.c, UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Poul Rewitz"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "4N3/8/8/k4P1P/2p2K2/8/8/3n4 w - - 0 1"] [PlyCount "25"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN [#]} 1. Kf3 $1 ({Try:} 1. Ke4 $2 c3 2. Kd3 Kb4 $1 3. h6 Kb3 4. h7 c2 5. Kd2 Kb2 6. h8=Q+ Kb1 7. Qa1+ Kxa1 8. Kc1 (8. Kxc2 Ne3+ $11) 8... Ka2 $1 9. f6 Kb3 $1 $11) (1. f6 $2 c3 2. f7 c2 3. f8=Q c1=Q+ 4. Kf5 Ne3+ 5. Kg6 Qb1+ $11 ({or} 5... Qc2+ $11) (5... Qg1+ $2 6. Kf7 $1 $18)) (1. h6 $2 c3 2. h7 c2 3. h8=Q c1=Q+ $11) (1. Nd6 $2 c3 $11) 1... c3 2. Ke2 c2 3. Kd2 Kb4 4. Kxc2 (4. h6 $2 Kb3 5. h7 {(see the 1.Ke4 ... 5.Kd2 line)}) 4... Ne3+ 5. Kd3 (5. Kd2 $2 Nxf5 6. Ng7 Nd6 ({or} 6... Nh6 7. Ke3 Kc5 $11) ( 6... Nxg7 $2 7. h6 $18) 7. Ke3 Kc5 8. Kf4 Nf7 9. Kf5 Kd6 10. Kf6 Nh6 11. Kg6 Ng4 $11) 5... Nxf5 6. Ng7 $3 (6. Ke4 $2 Ng3+ $11) 6... Nxg7 (6... Nh6 7. Ke4 ({ or} 7. Kd4 $18) 7... Kc5 8. Ke5 $18) (6... Nd6 7. Kd4 $18 ({or} 7. Ne6 $18)) 7. h6 Ne6 ({or} 7... Nh5 8. h7 Nf4+) 8. h7 Nf4+ 9. Ke4 Ng6 10. Kf5 Nh8 11. Kf6 Kc5 12. Kg7 Kd6 13. Kxh8 $18 1-0

[Event "sp.c, UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021.09.25"] [Round ""] [White "Pavel Arestov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/2p1N3/8/K7/8/5P2/1P1k4/1n6 w - - 0 1"] [PlyCount "39"] [EventDate "2021"] 
 {Sec. A.1.Studies up to 8 pieces -WIN} 1. f4 Kd3 $1 (1... Ke3 2. f5 Nd2 3. f6 Nc4+ 4. Ka6 Ne5 5. b4 $18) 2. f5 Nd2 3. f6 Nc4+ 4. Ka6 $1 (4. Kb5 $2 Ne5 $1 5. Kc5 Nd7+ $11) 4... Nd6 $1 5. Nc8 $1 (5. Nf5 $2 Nf7 $1 6. Kb7 Ke4 $11) 5... Nf7 $1 (5... Nxc8 $2 6. f7 $18) 6. Kb7 c5 7. Kc7 $1 (7. Kc6 $2 Kd4 $1 8. Nd6 Ne5+ $11) 7... Kd4 8. Nd6 Nh8 $1 (8... Ne5 9. b3 $1 Kd5 10. Nc4 $1 Nf7 11. Kd7 $18) (8... Nh6 9. Nf5+ $1 Nxf5 10. f7 $18) (8... Ng5 9. Kc6 $1 c4 10. Kb5 c3 11. bxc3+ Kxc3 12. Kc5 Kd3 13. Kd5 Ke3 14. Ke5 $18) 9. Kc6 $1 c4 10. Kc7 $3 { switchback} (10. Kd7 $2 Kd5 {zz} 11. Kc7 Ng6 $1 $11) 10... Kc5 $1 (10... Kd5 11. Kd7 {zz} Ng6 12. Nc8 Ke5 13. f7 Kf6 14. Ke8 $18) 11. Nf5 $1 (11. Kd7 $2 Kd5 {zz} 12. Kc7 Ng6 $11) 11... Kd5 (11... Nf7 12. Kd7 Kd5 13. Ke7 $18) 12. Ne3+ ( 12. Kd7 $2 Ke5 $11) 12... Kd4 13. Ng4 Ke4 14. Kd7 $3 ({Try:} 14. Kd6 $2 Kf5 $1 15. Ne3+ Kxf6 16. Nxc4 Nf7+ $1 17. Kd7 Ng5 $1 18. b4 Ne6 {/e4=}) 14... Kf5 ( 14... Kf4 15. Nh6 Kg5 16. Ng8 Kf5 17. Ke7 Ke5 18. Nh6 $1 Ng6+ 19. Kf7 Nf4 20. Ng4+ Kf5 21. Ne3+ $18) 15. Ne3+ Kxf6 16. Nxc4 Ng6 (16... Nf7 17. b4 $18) 17. b4 Nf8+ 18. Kd6 Ne6 19. b5 Nd4 20. b6 $18 1-0

Section A: Studies up to 8 pieces. A2. Draw.

[Event "1.p. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021.09"] [Round ""] [White "Michael .Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/6n1/4k3/N7/p7/N1p2K2/8/1b6 w - - 0 1"] [PlyCount "33"] [EventDate "2021"] 
 {Sec. A.2.Studies up to 8 pieces -DRAW} 1. Nb7 $3 { First white forces black to move the pawn to c2} ({Thematic try :} 1. Ke2 Nf5 $1 2. Nc6 Kd6 3. Nb4 Kc5 4. Nd3+ (4. Nxb1 Kxb4) (4. Na6+ Kd4 5. Nb5+ Kc4 6. Na3+ Kb3) 4... Bxd3+ 5. Kxd3 Kb4 $19) (1. Nxb1 $2 c2 $19) (1. Nc6 Kd6 $1 2. Nb4 Kc5 $1 3. Na6+ Kd4 $19) 1... c2 (1... Nf5 2. Nc5+ Kd5 3. Nxa4 $11) (1... Kd5 2. Nxb1 c2 3. Nc3+ $11) (1... Bg6 2. Nc5+ Kd5 3. Nxa4 $11) (1... Ke5 2. Nc5 c2 3. Nd3+ Kd4 {as main}) 2. Nc5+ Kd5 (2... Ke5 3. Nd3+ {the same}) 3. Nd3 Kd4 (3... Nf5 4. Ke2 Kd4 5. Kd2 $11 {with the king on d2 white draws, because c2 pawn is attacked with the knight also}) 4. Ke2 $1 Kc3 (4... Nf5 5. Kd2 $11) (4... Ne6 5. Kd2 $11) 5. Nb5+ $1 Kc4 6. Nd6+ $1 (6. Na3+ $2 Kb3 $19) 6... Kc3 7. Nb5+ $1 ({Thematic try :} 7. Ne4+ $2 Kd4 8. Nd6 Ne6 $1 9. Kd2 Ng5 $1 { white has no time to attack c2 pawn :} 10. Ne1 Kc5 $1 11. Nb7+ Kc6 $1 12. Na5+ Kb5 $1 13. Nb7 a3 $1 {and on} 14. Nxc2 {for example} a2 15. Na1 Kb4 16. Kc1 Ne4 $19 {etc.}) 7... Kb3 8. Nd6 $3 {Surprising switchback , moving away the knight from taking control on a3 square.} (8. Nc1+ Kb4 9. Nd6 Ne6 $1 $19) (8. Kd2 Nf5 $1 9. Nc1+ Kb4 $19) (8. Nd4+ Kc4 $1 $19) 8... Nf5 $3 (8... Ne6 9. Kd2 $13) ( 8... a3 9. Kd2 $1 Ne6 10. Nc1+ $11) (8... Kc3 9. Nb5+ Kb3 (9... Kc4 10. Nd6+ Kd5 11. Nb5 $11) 10. Nd6 $1 $11 {returns again}) 9. Nxf5 c1=N+ $1 {Phenix} ( 9... c1=Q 10. Nd4+ Kc4 11. Nxc1 Kxd4 12. Kd2 {is also draw}) 10. Nxc1+ Kc2 11. Nb3 $3 (11. Nd3 $2 Kc3 $1 12. Nc5 a3 $19) ({Logical try :} 11. Nd4+ Kxc1 12. Nb5 Bf5 {/g6} 13. Ke3 Kc2 $1 $19 (13... Kb2 14. Kd2 {is as main line position X })) 11... Kxb3 12. Nd4+ Kc3 $1 (12... Kb2 13. Nb5 Bf5 14. Kd2 $11 {position X}) 13. Nb5+ Kc2 {Similar to position X, but the bishop is on b1} 14. Ke3 $1 Ba2 15. Na3+ $1 (15. Kd4 Be6 $19 {/f7}) 15... Kb2 16. Kd2 $1 Kxa3 (16... Be6 17. Nb5 $11) 17. Kc2 $11 { zz 4 knight sacrifices - 2 for white and 2 for black, including black Phenix} 1/2-1/2

[Event "5.p. UAPA 16th (tt) JT80 J.Copie "] [Site ""] [Date "2021.11.09"] [Round ""] [White "Pavel Arestov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "3K2n1/1k6/8/8/8/2P1p3/6Rp/2n5 w - - 0 1"] [PlyCount "16"] [EventDate "2021"] 
 {Sec. A.2.Studies up to 8 pieces -DRAW} 1. Rb2+ $1 (1. Rxh2 $2 e2 2. Rxe2 Nxe2 3. c4 Nd4 4. c5 Nc6+ $19) 1... Ka6 $1 (1... Kc6 2. Rxh2 e2 3. Rxe2 Nxe2 4. c4 { /Kc8=}) 2. Rxh2 e2 3. Rxe2 $1 (3. Rh1 $2 Nd3 4. Kc7 Kb5 $1 5. Kd6 Nf6 6. c4+ Kxc4 $19) 3... Nxe2 4. Kc8 $3 (4. c4 $2 Nd4 5. Kc7 (5. c5 Nc6+ 6. Kc7 Nge7 $1 $19) 5... Ne7 $1 6. c5 Nec6 $19) (4. Kd7 $2 Kb7 $1 5. c4 Nd4 6. c5 Nc6 $19) (4. Kc7 $2 Ne7 $1 5. Kd7 Ng6 $1 6. Kc6 Ne5+ 7. Kd5 Nd3 $1 8. Kc6 Nef4 $1 9. c4 Nb4+ $1 10. Kc5 Nfd3+ 11. Kd6 Kb7 $1 12. c5 Nc6 $19) 4... Kb6 (4... Ne7+ 5. Kc7 $1 Nf4 6. c4 $11) (4... Ka7 5. Kc7 $1 (5. Kd7 $2 Kb7 $1 6. c4 Nd4 $19) 5... Ne7 6. Kd6 $1 Nc8+ 7. Kc7 Ne7 (7... Nb6 8. c4 $11) 8. Kd6 $11) 5. c4 $1 (5. Kb8 $2 Nf6 $1 6. c4 Nd7+ 7. Ka8 Nc5 $1 $19) 5... Ne7+ 6. Kb8 $1 (6. Kd7 $2 Nc6 7. c5+ Kb7 $1 $19) 6... Nc6+ 7. Ka8 $1 (7. Kc8 $2 Ned4 $19) 7... Ned4 (7... Kc5 8. Kb7 $11 ) 8. c5+ Kc7 $11 {stalemate} 1/2-1/2

[Event "3.hm. UAPA 16th (tt) JT80 J.Copie"] [Site ""] [Date "2021.12.13"] [Round ""] [White "Sergey Osintsev"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/6K1/8/1p6/1p6/2p5/3k4/2R3N1 w - - 0 1"] [PlyCount "17"] [EventDate "2021"] 
 {Sec. A.2.Studies up to 8 pieces -DRAW} 1. Ra1 $1 (1. Rf1 $2 b3 $1 (1... c2 $2 2. Nf3+ Ke3 3. Ne5 $1 b3 4. Rf3+ $1 Ke4 5. Rxb3 c1=Q 6. Rxb5 $11) 2. Nf3+ Ke2 3. Rc1 (3. Rb1 c2 $1 4. Rxb3 c1=Q 5. Nd4+ Kd2 6. Rxb5 Qg1+ $19) 3... b2 $1 4. Nd4+ Kd3 $1 5. Rd1+ Kc4 6. Kf6 b4 7. Ke5 b3 8. Ne2 c2 $19) (1. Rb1 $2 c2 2. Nf3+ Kc3 3. Re1 b3 4. Re3+ Kb2 $1 5. Ne1 c1=Q 6. Nd3+ Kc2 $1 7. Nxc1 b2 $1 8. Re2+ Kxc1 9. Kf6 b1=Q 10. Re1+ Kc2 11. Rxb1 Kxb1 $19) 1... c2 (1... b3 2. Nf3+ $11) 2. Nf3+ (2. Kf6 $2 b3 3. Nf3+ Kc3 $1 $19) 2... Ke3 (2... Kc3 3. Ra8 (3. Ra7) (3. Ra6) 3... b3 (3... c1=Q 4. Rc8+ Kb2 5. Rxc1 Kxc1 6. Nd4 $1 $11) 4. Rc8+ Kd3 5. Ne1+ Kd2 6. Nf3+ Kd3 7. Ne1+ $11) 3. Ne1 $1 (3. Ne5 $2 Ke4 $1 (3... b3 $2 4. Ra3 $1 c1=Q 5. Rxb3+ Ke4 6. Rxb5 Qc8 7. Nf7 $1 $11) 4. Re1+ Kd5 $1 5. Nf3 (5. Nd3 b3 6. Nb2 Kd4 7. Kf6 Kc3 $19) 5... b3 6. Re5+ Kd6 7. Rxb5 c1=Q 8. Rxb3 Qf4 $1 9. Rb6+ (9. Ra3 Kc5 $1 $19) 9... Ke7 $1 10. Rb7+ Ke8 $1 11. Rb3 Qf7+ $19) 3... b3 4. Kf6 Kd2 (4... b2 5. Nxc2+ $11) 5. Ke5 b4 $1 (5... c1=Q 6. Rxc1 Kxc1 7. Nd3+ (7. Kd4) 7... Kc2 8. Kd4 b2 9. Nxb2 Kxb2 10. Kc5 $11) 6. Kd5 $3 (6. Kd4 $2 b2 7. Nxc2 b3 $1 8. Rb1 (8. Rh1 bxc2 $1 $19) 8... Kxc2 $1 9. Rh1 b1=Q $19) (6. Ke4 $6 b2 (6... Kc3 7. Rc1 Kd2 8. Ra1) 7. Nxc2 Kxc2 8. Rh1 b1=Q $19) (6. Nf3+ $2 Kc3 $1 7. Re1 b2 8. Re3+ Kc4 $19) 6... b2 7. Nxc2 b3 $1 (7... Kxc2 8. Rh1 b1=Q 9. Rxb1 Kxb1 10. Kc4 $11) 8. Nd4 $3 bxa1=N 9. Nxb3+ $11 1/2-1/2

Section B: Theme Free B1. Win.

[Event "2.p UAPA 16th Win JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Oleg Pervakov, Karen Sumbatyan"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "1b5K/1Pkp1b2/6pP/4PPP1/p3N3/p7/4P3/8 w - - 0 1"] [PlyCount "21"] [EventDate "2021"] 
 {[#]} 1. e6 $1 (1. Kg7 $2 a2 2. h7 a1=Q 3. Kxf7 Qxe5 $11) (1. Nc3 $2 Kxb7 2. Kg7 Bxe5+ 3. Kxf7 Bxc3 $19) 1... dxe6 (1... a2 2. exf7 a1=Q+ 3. f6 Qa3 4. Kg7 $18) (1... Bxe6 2. fxe6 a2 3. e7 a1=Q+ 4. Nf6 Qe5 5. e8=Q Qxe8+ 6. Nxe8+ Kxb7 7. h7 a3 8. Kg8 Be5 9. Nd6+ $1 Ka6 10. Nc4 a2 11. Nxe5 $18) 2. Nc3 exf5 $1 ( 2... Kxb7 3. f6 $1 Be5 4. Na2 $18) (2... gxf5 3. Kg7 Be8 4. h7 Ba7 (4... Kxb7 5. Kf6 $18) 5. Nb5+ $1 Bxb5 6. b8=Q+ Bxb8 7. h8=Q $18) 3. Kg7 $1 (3. h7 $2 Kxb7 4. Kg7 Be5+ 5. Kxf7 Bxc3 $19) 3... Bb3 $1 ({ Without unblocking c3-square for white king:} 3... a2 4. Nxa2 Bxa2 5. h7 Kxb7 6. Kf6 Ba7 7. Ke5 Bb8+ 8. Kd4 Ba7+ 9. Kc3 $1 $18) 4. h7 Kxb7 5. Kf6 Ba7 6. e3 $1 (6. Ke5 $6 Bb8+ 7. Kd4 Ba7+ 8. Kd3 $2 (8. Ke5 Bb8+ 9. Kf6 Ba7 10. e3 $1 $18 {and so on}) 8... Bc2+ $1 9. Kc4 Bb3+ 10. Kd3 Bc2+ 11. Kxc2 Bd4 12. Nb5 Bh8 13. Nxa3 Kc6 $11) 6... Bxe3 7. Ke5 Bd2 8. Kd4 Bxc3+ (8... a2 9. Nxa2 Bxa2 10. h8=Q Bxg5 11. Qg7+ $18) 9. Kxc3 a2 10. Kb2 a3+ 11. Ka1 $1 $18 { The arrow of white king h8-a1 in the win study} 1-0

[Event "5.p UAPA 16th Win JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/5NK1/4P3/8/8/2kP4/R3n3/4r3 w - - 0 1"] [PlyCount "23"] [EventDate "2021"] 
 1. Ra3+ $1 ({Logical try :} 1. Ra1 $2 Rxa1 2. e7 Ra8 { difference from main line : no fork on c6}) (1. Ra4 $2 Nd4 $1 $11) 1... Kb4 ( 1... Kb2 2. Ra4 $1 (2. Ra6 Nf4 $1) 2... Nc3 (2... Ng3) 3. Ra6 $1 Nd5 4. Kf8 $18 ) ({black can't go too far with the king :} 1... Kc2 2. Nd8 $1 Nf4 3. Kf7 $1 Rf1 4. Nc6 $1 Nxd3+ 5. Kg7 Rg1+ 6. Kh6 Rh1+ 7. Kg5 Rg1+ 8. Kf5 Rf1+ 9. Kg4 Rg1+ 10. Kf3 Rf1+ 11. Kg2 $18) 2. Ra1 $3 { Rook sacrifice to allow white e-pawn to move forward} (2. e7 $2 Nd4 $1 3. Ra7 Nc6 $1 $11) 2... Rxa1 3. e7 Ra8 4. Nd8 $1 Nd4 $1 5. Kf6 $3 ({Try :} 5. e8=Q $2 Rxd8 $11) (5. Kg6 $2 Ra6+ 6. Kg5 $2 Ne6+ $11) 5... Ra6+ 6. Ke5 $1 (6. Kg5 $2 Ne6+ $11) 6... Rd6 $3 7. Ke4 $3 ({Thematic try :} 7. e8=Q $2 Rxd8 8. Qe7+ Kb5 9. Qb7+ Kc5 10. Qa7+ Kc6 $1 11. Qa6+ Kc7 $1 12. Qa5+ Kb7 $1 13. Qb4+ Kc7 $1 $11 ) (7. Kxd6 $2 Nf5+ $11) 7... Ne6 8. Nc6+ $1 ({Thematic try :} 8. e8=Q $2 Nxd8 $1 9. Qe7 Kc5 10. d4+ Kc6 $11) 8... Kc5 $1 (8... Rxc6 9. e8=Q $18) 9. d4+ $1 ({ Thematic try :} 9. e8=Q $2 Nc7 $3 (9... Rxc6 10. d4+ $18) 10. Qc8 Kxc6 $11) 9... Nxd4 10. Nxd4 (10. e8=Q {again draw}) 10... Re6+ $5 11. Nxe6+ Kd6 { The last position is known before from study of Haga, 1925 :} 12. e8=R $1 $18 { 7 times (including now) white could promote a queen without beeing captured. But he didn't do it , because it was leading do draw. Finally he promotes a rook (instead of sacrificed rook - Phenix) and winning.} (12. e8=Q $2 { Stalemate}) 1-0

[Event "3.hm UAPA 16th Win JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Jaroslav Polasek"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/4R1p1/5r2/1N6/8/2p4K/k5Bp/8 w - - 0 1"] [PlyCount "29"] [EventDate "2021"] 
 1. Bh1 $3 {The bishop released the square g2 for white rook} (1. Re2+ $2 Kb3 2. Bh1 Rf4 3. Re3 Rc4 4. Nd6 Rc7 5. Kxh2 Kb2 6. Nb5 c2 $11 (6... Rc4 $11)) (1. Kxh2 $2 c2 2. Re2 Kb3 $1 3. Nd4+ Kc3 4. Nxc2 Kd3 $11) (1. Bd5+ Kb2 2. Re2+ c2 3. Kxh2 Rf4 $1 4. Kg3 Rb4 $11) 1... c2 (1... Kb2 2. Re2+ c2 3. Nd4 Kc3 4. Nxc2 {see main line}) 2. Re2 Kb3 ({or} 2... Kb2 3. Nd4 Kc3 4. Nxc2) (2... Kb1 $2 3. Na3+) 3. Nd4+ Kc3 4. Nxc2 Kd3 5. Rg2 {After 1.Kxh2? this move was not be possible, because white bishop blocked the g2 square.} Rh6+ 6. Kg4 ({or} 6. Kg3 Rg6+ 7. Kh4 $1 {see main line} (7. Kxh2 $2 Rxg2+ $11 {with check})) 6... Rg6+ 7. Kh4 $1 (7. Kf3 {wastes time} Rf6+ 8. Kg4 Rg6+) 7... Rxg2 8. Ne1+ $1 Ke2 9. Nxg2 g5+ {[#]} (9... Kf2 10. Kh3 $1 g6 (10... g5 11. Kxh2 {ZZ1}) (10... Kg1 11. Nf4 ({or} 11. Kg3) 11... g5 12. Ne2+ Kxh1 13. Kg3 g4 14. Kf2 g3+ 15. Nxg3#) 11. Nf4 g5 12. Nh5 Kg1 13. Ng3) (9... Kf1 10. Kh3 {or 10.Kh4} (10. Kg3 $2 g5 $1 $11 11. Kxh2 Kf2)) 10. Kh3 $1 {avoids zugzwang} (10. Kg3 $6 Kf1 11. Ne3+ (11. Kxh2 Kf2 $11 {mutual zugzwang ZZ1}) 11... Kg1 12. Nf5 g4 $11 {mutual zugzwang ZZ2}) 10... Kf1 ({main} 10... Kf2 11. Kxh2 $18 {ZZ1}) 11. Ne3+ $1 (11. Kg3 { wastes time} Ke2 12. Kh3 Kf1) (11. Kxh2 $6 Kf2 $11 {ZZ1 [#]}) 11... Kg1 (11... Kf2 12. Nf5 Kg1 13. Ng3) 12. Kg3 g4 13. Nf5 {ZZ2[#]} Kxh1 14. Kf2 g3+ 15. Nxg3# 1-0

[Event "sp.hm UAPA 16th Win JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Jan Timman & Mario Garcia"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "2r3B1/p3PPQ1/2PpNP1P/P5Pk/p7/1p6/1P1p3n/1K6 w - - 0 1"] [PlyCount "29"] [EventDate "2021"] 
 1. Qg6+ Kxg6 2. Bh7+ {with the following lines : A)} Kxh7 ({B)} 2... Kh5 3. Bc2 Rxc6 4. e8=Q bxc2+ 5. Ka2 {With : b.1.)} c1=Q ({b.2.)} 5... c1=N+ 6. Ka3 d1=Q 7. f8=Q+ {(ab)} Kh4 8. Nd4 {(ba)} Nd3 (8... Qd3+ 9. b3 Qxd4 10. Qxc6 Qa1+ 11. Kb4 Nd3+ 12. Kb5 Qe5+ 13. Ka6 $1 Nb4+ 14. Kb7 Nxc6 15. h7 Nxa5+ 16. Ka6 Qe2+ 17. Kxa5 Qe5+ 18. Ka6 Qe2+ 19. Kxa7 Qe3+ 20. Kb7 Qe4+ 21. Kc7 Qxh7+ 22. f7 Qc2+ 23. Kd8 $1 $18) 9. Qe4+ Ng4 10. Qf7 {/g8} Qa1+ 11. Qa2 Rc3+ 12. bxc3 Qc1+ 13. Kxa4 Nc5+ 14. Kb4 Nxe4 15. Qa3 Qxa3+ 16. Kxa3 Nxg5 17. Nf3+ $1 Kh5 18. Nxg5 $18 ) ({b.3.)} 5... d1=Q 6. f8=Q+ Kh4 7. Qxc6 Qb1+ 8. Ka3 Qa1+ 9. Kb4 Qxb2+ 10. Kxa4 Qa1+ 11. Kb5 Qf1+ 12. Qc4+ Qxc4+ 13. Kxc4 c1=Q+ 14. Kd5 {/b5} Qd1+ 15. Kc6 $18) 6. Ng7+ Kh4 (6... Kxg5 7. Qe3+ Kg4 8. Qe4+ Kh3 (8... Kg3 9. Nf5+ $18) 9. h7 Rc8 10. Ne8 Qa1+ 11. Kxa1 d1=Q+ 12. Qb1 Rc1 13. h8=Q+ Kg3 14. Qhh7 $18) 7. Qe4+ Ng4 (7... Kh3 8. h7 Rc8 9. Ne8 Qa1+ 10. Kxa1 d1=Q+ 11. Qb1 Rc1 12. h8=Q+ Kg3 13. Qhh7 $18) 8. Nf5+ Kxg5 9. f8=Q Qa1+ 10. Kxa1 d1=Q+ 11. Qb1 Rc1 12. Qg7+ {/g8} Kf4 13. Qxg4+ $1 Kxg4 14. Ne3+ $18 {fork}) ({C)} 2... Kxf7 3. Nd8+ Rxd8 4. exd8=N+ $18) 3. Nf8+ Kh8 4. Ng6+ Kh7 5. f8=N+ Rxf8 (5... Kg8 6. h7+ Kf7 7. h8=N+ Kg8 (7... Ke8 8. f7# {mate}) 8. f7+ Kg7 9. e8=N+ Rxe8 10. fxe8=N+ Kg8 11. Nf6+ Kg7 12. Ne6# {mate}) 6. exf8=N+ Kg8 7. h7+ Kf7 8. h8=N+ Kg8 (8... Ke8 9. f7+ Kd8 10. Ne6+ Kc8 11. f8=Q# {mate}) 9. f7+ Kg7 10. Ne6+ Kh7 11. f8=N+ $1 ( 11. Ngf8+ $4 Kxh8 12. Ng6+ Kh7 13. f8=N+ Kg8 14. Ne7+ Kf7 $19) 11... Kg8 12. Ne7+ Kxh8 13. Nfg6+ Kh7 14. Nef8+ Kg7 15. Nf5+ $1 $18 {White controls the coronation. In this line there are 4 coronation of Knights New Version Study in 10th Ty of UAPA} 1-0

[Event "1.c, UAPA 16th Win JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Michal Hlinka & LuboЕЎ Kekely"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/4p3/1P5N/P2kn3/3p4/7K/P7/8 w - - 0 1"] [PlyCount "31"] [EventDate "2021"] 
 1. b7 (1. Nf5 $2 Nd7 $1 2. Nxe7+ Kc5 3. Kg4 Kb5 $11) 1... Nd7 (1... Nc6 2. a6 $18) 2. a6 Kc6 3. b8=Q $1 Nxb8 4. a7 Kb7 5. axb8=Q+ Kxb8 6. Kg4 $1 ({ thematic try} 6. Ng4 $2 Kc7 7. Kg3 Kc6 $1 8. Kf3 Kb5 $1 (8... Kc5 $2 9. Ne5 $1 {zz}) 9. Ne5 Kc5 $1 {zz} 10. Nd3+ Kd5 11. Kf4 e6 $1 {zz} 12. Ne5 Kc5 $1 {zz} 13. Ke4 (13. Kf3 Kd5 14. Kf4 Kc5 $11) 13... Kb4 14. Nd3+ Ka3 15. Nc1 e5 $1 $11 {zz}) 6... Kb7 {or Kc7} 7. Nf7 $1 (7. Nf5 $2 e5 $11) (7. Kf3 $2 Kb6 8. Nf7 Kb5 9. Ne5 Kc5 $1 {zz}) 7... Kb6 {or Kc6} 8. Ne5 Kc5 (8... Kb5 9. Kf4 Kb4 10. Nd3+ Ka3 11. Nc1 {as main}) 9. Kf3 $1 (9. Kf4 $2 e6 $11) 9... Kb4 (9... Kd5 10. Kf4 $1 {zz}) 10. Nd3+ Ka4 11. Kf4 $1 (11. Ke4 $2 Ka3 12. Nc1 e5 $1 {zz}) 11... Ka3 (11... e5+ 12. Ke4 $1 Ka3 13. Nc1 {zz}) 12. Nc1 e6 13. Kf3 $1 e5 14. Ke4 { zz, and wins, for example} Kb2 15. a4 Kxc1 16. Kd3 {Reciprocal zugzwangs.} 1-0

[Event "sp.c UAPA 16th Win JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Peter Krug & Mario Garcia"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "rn1qk2r/8/PPPP1PPP/1BpPK3/8/8/8/8 w kq - 0 1"] [PlyCount "27"] [EventDate "2021"] [TimeControl "300"] 
 1. c7+ $1 ({Try :} 1. b7 $2 O-O $1 2. h7+ Kh8 3. g7+ Kxh7 4. gxf8=Q Qxf8 $1 ( 4... Nd7+ $2 5. cxd7 Qxf8 6. bxa8=Q Qxa8 7. Bc6 $1 $18) 5. bxa8=Q Kg6 6. Ke4 Qxf6 7. Qxb8 Qd4+ $11 {perpetual checks}) 1... Nd7+ 2. Bxd7+ Qxd7 3. b7 Rc8 ( 3... O-O 4. f7+ $1 $18) 4. b8=N $1 (4. b8=Q $4 Rxh6 {-+}) 4... Qh3 5. d7+ Qxd7 6. f7+ $1 (6. g7 $2 Qxc7+ 7. d6 Qxb8 8. gxh8=Q+ Kd7 9. Qh7+ Kc6 10. Qe4+ Kb6 $1 (10... Kb5 $2 11. Qb7+ Qxb7 12. axb7 Re8+ (12... Rb8 13. d7 Kc6 14. Ke6 $18) 13. Kd5 c4 14. d7 Rb8 15. Kd6 $18) 11. f7 c4 $11) (6. d6 $2 Qh3 {/g4} 7. d7+ Qxd7 8. f7+ Ke7 9. Nxd7 Kxd7 10. g7 Ke7 11. h7 Kxf7 12. gxh8=Q Rxh8 13. Kd6 c4 $1 $11) 6... Qxf7 7. gxf7+ Kxf7 8. a7 Rxh6 (8... Rxc7 9. a8=Q $18) 9. d6 $1 (9. a8=Q $4 Re8+ 10. Kf4 Rf6+ 11. Kg5 Rg8+ 12. Kh5 Rf2 {!-+}) 9... Rh5+ 10. Kf4 $1 $18 {WIN} ({Try:} 10. Ke4 $2 Re8+ $1 (10... Rh4+ $2 11. Kf3 $1 $18) 11. Kf4 ( 11. Kd3 Rh4 12. a8=Q Rd4+ 13. Kc2 Re2+ 14. Kc1 Re1+ 15. Kb2 Re2+ 16. Kb3 Re3+ $11) 11... Rh4+ 12. Kf3 (12. Kg3 Ra4 13. d7 Re3+ 14. Kf2 Rae4 $1 $11 15. a8=Q Re2+ 16. Kf1 Re1+ 17. Kg2 R1e2+ 18. Kf3 R2e3+ $11) 12... Rh6 13. a8=Q Rf6+ {=}) 10... Rh4+ 11. Kg3 {/f3+- The Queen and Knight against the two Rooks prevail} Ra4 12. d7 Rxc7 13. a8=Q Rxa8 14. d8=Q {and EGTB, +-.} 1-0

Section B, Theme free. B1 Draw.

[Event "1/2.p. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.06.16"] [Round ""] [White "Sergey Osintsev"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "2R4K/2pP4/k7/2P1n3/1n6/3p4/8/8 w - - 0 1"] [PlyCount "36"] [EventDate "2021"] 
 1. d8=Q $1 (1. Ra8+ $2 Kb5 2. d8=Q Nf7+ 3. Kg7 Nxd8 4. Rxd8 Kxc5 $19) (1. d8=N $5 Kb5 2. Ra8 Na6 $1 3. Ra7 (3. Ne6 d2 4. Nd4+ Kc4 5. Nf5 Kc3 6. Ne3 Ng4 7. Nd1+ Kc2 8. Rxa6 Kxd1 $19) 3... d2 4. Rb7+ Kc4 5. Rb1 Nxc5 $19) (1. Rxc7 $2 Nf7+ $1 (1... Nbc6 2. d8=Q Nxd8 3. Rg7 d2 4. Rg1 Ndc6 5. Rd1 $11) 2. Kg7 Nd8 3. Rc8 Nbc6 4. Ra8+ Kb5 5. Ra2 Kc4 (5... Kxc5 $2 $11) 6. Kf6 Kc3 $19) 1... Nf7+ 2. Kg8 $1 (2. Kg7 $2 Nxd8 3. Rxd8 (3. Rxc7 Ne6+ $19) 3... Kb5 4. Kf6 Kxc5 $19) 2... Nxd8 3. Rxc7 $1 (3. Rxd8 $2 Kb5 $19) 3... Nd5 $1 (3... Ndc6 4. Rg7 $11 (4. Rd7 $2 Nd5 $1 5. Rxd5 Ne7+ $19) (4. Kf8)) 4. Rg7 (4. Rd7 $2 Nf6+ $19) (4. Rh7 $2) 4... Nc6 $1 (4... Nf6+ 5. Kh8 $1 Nc6 6. Rg3 (6. Rg6) 6... d2 7. Rg1 $11) 5. Rg3 $1 (5. Rg2 $2 Kb5 $1 6. Rd2 Kc4 $1 7. Kf7 Nc7 $1 $19) 5... d2 6. Ra3+ $3 ( 6. Rd3 $2 Nf6+ 7. Kg7 $1 (7. Kf8 Ne4 8. Ke8 Kb5) 7... Ne4 8. Kf8 Ka5 $3 9. Ke8 Kb5 $1 10. Kf8 (10. Rd5 $2 Nf6+ $19) 10... Kc4 11. Rxd2 Nxd2 12. Ke8 Kb5 13. Kd7 Nb3 (13... Nc4) 14. Kc7 Nba5 15. Kc8 Ka6 16. Kc7 Ka7 17. Kc8 Nb3 18. Kc7 Nbd4 19. Kc8 Nb5 20. Kd7 Kb7 $19) 6... Kb5 (6... Kb7 7. Rd3 Nf6+ 8. Kf8 Ne4 9. Ke8 $1 (9. Rd5 $2 Ka6 10. Rd3 Ka5 $1 11. Ke8 Kb5 $19) 9... Kc8 10. Kf8 $1 Kc7 11. Ke8 $11) 7. Rd3 Nf6+ 8. Kf8 (8. Kf7 $2 Ne5+ $19) 8... Ne4 9. Ke8 Ka6 $1 10. Ra3+ $1 (10. Kf8 $2 Ka5 $1 11. Ke8 Kb5 $19) 10... Na5 11. Rd3 $1 (11. Ra1 $2 Nc3 $1 12. c6 (12. Kd7 Kb5 $1 $19) 12... Kb6 $1 13. Kd7 Nxc6 $19) 11... Nc6 12. Ra3+ $1 (12. Kd7 $2 Nxc5+ $19 (12... Ne5+)) 12... Kb5 13. Rd3 Kb4 14. Rxd2 $1 ( 14. Kf8 $2 Kc4 15. Rxd2 Nxd2 16. Ke8 Kb5 $19) 14... Nxd2 15. Kd7 Kb5 16. Kc7 ( 16. Kc8) 16... Nb3 17. Kb7 Nba5+ 18. Ka8 $1 Kxc5 $11 1/2-1/2

[Event "3.p. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.07"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "3r2n1/4PPpk/3r4/6P1/q5p1/3pQP2/5K2/8 w - - 0 1"] [PlyCount "27"] [EventDate "2021"] 
 1. f8=N+ $1 (1. Qxd3+ $2 Kh8 $19) 1... Kh8 2. Ng6+ $1 (2. exd8=Q $2 Qc2+ 3. Kg3 Rxd8 4. Ng6+ Kh7 5. Qe4 Nf6 6. gxf6 Qc7+ 7. f4 gxf6 8. Ne7+ Kh8 9. Qh1+ Kg7 $19 ) 2... Kh7 (2... Rxg6 3. exd8=Q $11) 3. Nf8+ Rxf8 4. exf8=N+ $3 ({ Thematic try :} 4. exf8=Q d2 $1 5. Qxd6 d1=N+ $3 6. Qxd1 Qxd1 7. Qe4+ Kh8 $19) 4... Kh8 5. Qxd3 $3 Qa7+ (5... Rxd3 6. Ng6+ $11) 6. Kg2 $1 gxf3+ 7. Kh3 $1 Qd7+ $1 (7... Nf6 8. Qxd6 $11 f2 9. Qd3 $11) 8. Nxd7 Rxd3 9. Ne5 f2+ (9... Rd6 10. Nf7+ Kh7 11. Nxd6 $11) 10. Kg2 f1=Q+ (10... Rg3+ 11. Kxf2 Rxg5 12. Nf7+ $11) 11. Kxf1 Rd1+ 12. Ke2 Rh1 (12... Rd6 13. Nf7+ $11) 13. Ng6+ Kh7 14. Nf8+ $11 { 2 knight promotions in the main line, 1 black knight promotion in thematic try, and at the endperpetualcheckfromthesamesquareaspreviouspromotion} 1/2-1/2

[Event "5.p. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.09.22"] [Round ""] [White "Pavel Arestov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1K5k/8/4P3/p5P1/4R3/5b2/R2pp3/3r4 w - - 0 1"] [PlyCount "23"] [EventDate "2021"] 
 1. e7 Bh5 (1... Rb1+ 2. Kc8 $1 Rc1+ 3. Kb8 Bh5 4. e8=Q+ Bxe8 5. Rxe8+ Kg7 6. Rxd2 $11) 2. g6 $1 (2. e8=Q+ $2 Bxe8 3. Rxe8+ Kg7 4. Rxe2 Rb1+ $19) 2... Bxg6 3. e8=Q+ Bxe8 4. Rxe8+ {with two lines : A)} Kg7 ({B)} 4... Kh7 5. Rxe2 Rb1+ 6. Kc8 $1 (6. Ka7 d1=Q 7. Rad2 Qg1+ $19) (6. Kc7 $2 d1=Q 7. Rad2 Qc1+ 8. Rc2 Qf4+ $19) 6... Rc1+ $1 (6... d1=Q 7. Rad2 Qc1+ 8. Rc2 Qd1 9. Rcd2 $11) 7. Kd8 $3 (7. Kb8 $2 d1=Q 8. Rad2 Qb3+ $18) (7. Kd7 $2 d1=Q+ 8. Rad2 Qa4+ $1 $19) 7... d1=Q+ 8. Rad2 $1 Qf1 $1 (8... Qb3 9. Rh2+ Kg6 10. Rhg2+) 9. Re7+ $1 (9. Rh2+ $2 Kg6 10. Rdg2+ Kf5 11. Rf2+ Qxf2 12. Rxf2+ Ke6 $1 13. Ra2 Rc5 $19) (9. Rd7+ $2 Kg6 10. Re6+ Kf5 11. Rf7+ Kxe6 $19) 9... Kg6 10. Rd6+ $11) 5. Rxe2 Rb1+ 6. Ka7 $1 ( 6. Kc7 $2 d1=Q 7. Rad2 Qc1+ 8. Rc2 Qf4+ $19) (6. Ka8 $2 d1=Q 7. Rad2 Qh1+ $19) 6... d1=Q 7. Rg2+ $1 (7. Rad2 $2 Qg1+) 7... Kh6 (7... Kf6 8. Raf2+ $1 Ke5 9. Re2+ Kf4 10. Rgf2+ $1 Kg3 11. Rg2+ Kh3 12. Rh2+ $11) 8. Rad2 $1 (8. Rh2+ $2 Kg5 9. Rad2 Qg1+ $19) 8... Qe1 9. Rde2 $1 (9. Rh2+ $2 Kg5 10. Rhg2+ Kf4 11. Rdf2+ Ke3 $19) 9... Qc1 (9... Qf1 10. Rh2+ Kg5 11. Reg2+ Kf4 12. Rf2+ $11) 10. Rh2+ Kg5 11. Rhg2+ Kf4 12. Rgf2+ {perpetual check} 1/2-1/2

[Event "6.p. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.09.20"] [Round ""] [White "Marc Gelly"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "5b2/2r5/3p4/p2pp3/7B/PNkP4/2P4P/3K4 w - - 0 1"] [PlyCount "41"] [EventDate "2021"] 
 1. Kc1 $3 (1. Bd8 $2 Rc8 $1 2. Bxa5+ Kb2 3. Nd2 Rxc2 4. h4 Be7 $19) (1. Nxa5 $2 Kb2 2. c4 Kc3 3. cxd5 Kxd3 $19) 1... Bh6+ 2. Kb1 Bd2 3. Bd8 $1 (3. a4 $2 Rf7 $19) 3... Ra7 4. a4 $3 ({Prematurely} 4. Bxa5+ $5 Rxa5 5. Nxa5 e4 $1 $19) ({ Logical try:} 4. Bb6 $2 Ra6 $1 5. Bd8 a4 $1 6. Nc1 Bh6 7. Na2+ Kd2 8. Nb4 Ra7 9. Nxd5 Rb7+ $19) 4... Ra8 5. Bb6 $3 (5. Bc7 $2 e4 $1 6. Bxd6 e3 $19) 5... Ra6 (5... Bf4 6. Bxa5+ {iden line main}) (5... e4 6. Bd4+ Kb4 7. Nxd2 $11) 6. Bd8 $1 (6. Bf2 $2 d4 $19) 6... Bf4 7. Bxa5+ $1 (7. h4 $2 Kb4 $19) (7. Nxa5 Ra8 $19) 7... Rxa5 8. Nxa5 e4 $1 (8... Bxh2 9. Kc1 $11) (8... Kb4 9. Nc6+ $11) 9. dxe4 ( 9. Nb3 $2 exd3 $1 10. cxd3 Kxb3 $19) 9... dxe4 10. Nb3 $1 e3 $1 11. Nc1 Bxh2 12. a5 $1 $11 {Draw} (12. Ne2+ $2 Kd2 13. a5 Kxe2 $1 14. a6 Kd2 $19) 12... d5 13. a6 ({or} 13. Ne2+ {similar}) 13... Bb8 14. Ne2+ Kd2 15. Nd4 Ba7 16. Nf3+ Ke2 17. Ne5 Kf1 (17... Kd1 18. Kb2 e2 19. Nf3 e1=Q 20. Nxe1 Kxe1 21. Kb3 $11) 18. Nd3 e2 19. Kb2 e1=Q 20. Nxe1 Kxe1 21. Kb3 $1 $11 1/2-1/2

[Event "sp.p. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.12.28"] [Round ""] [White "David Gurgenidze"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "6KR/kP3P2/1q5P/8/5P2/8/p2p4/8 w - - 0 1"] [PlyCount "32"] [EventDate "2021"] 
 1. f8=Q Qg6+ (1... Qe6+ 2. Qf7 Qxf7+ 3. Kxf7 Kxb7 4. Rd8 a1=Q 5. Rxd2 Qh8 6. Rd6 $11) 2. Qg7 Qxg7+ (2... Qe8+ 3. Kh7 Qe4+ 4. f5 Qxf5+ 5. Qg6 Qxg6+ (5... Qd7+ 6. Qg7 Qxb7 7. Qxb7+ Kxb7 8. Rd8 a1=Q 9. Rxd2 $11) 6. Kxg6 Kxb7 7. Rd8 a1=Q 8. Rxd2 $11) 3. hxg7 {A)} a1=Q ({B)} 3... d1=Q 4. b8=Q+ Kxb8 5. Kh7+ $1 Kb7 {beginning of the duel between the King and the Rook} 6. Rb8+ $1 Kc7 7. Rc8+ $1 Kd7 8. Rd8+ Kxd8 9. g8=Q+ $11 {draw}) 4. b8=Q+ Kxb8 5. Kf7+ $1 (5. Kh7+ $2 Kc7 6. Rc8+ Kd7 7. Rd8+ Kxd8 8. g8=Q+ Ke7 9. Qg5+ Qf6 10. Qc5+ Qd6 11. Qg5+ Kd7 12. Qg4+ Kc7 13. Qd1 Qxf4 $19) 5... Kc7 6. g8=Q Qa2+ 7. Kg6 $1 Qxg8+ 8. Rxg8 d1=Q 9. Rg7+ Kd6 10. f5 Qg4+ 11. Kh6 $3 {A1)} (11. Kf6 $2 Qh5 12. Rg8 Kd5 $19) 11... Qxf5 ({A2)} 11... Qh4+ 12. Kg6 Ke5 13. Rf7 Qg4+ 14. Kh7 $11 { and Guretzky-Cornitz theoretical draw}) 12. Rg6+ Ke7 13. Rg7+ Kf8 14. Rg8+ Ke7 15. Rg7+ Kf6 16. Rf7+ Kxf7 $11 {stalemate as a result of Ponziani Position Study mixes together Guretzky-Cornitz position, Ponziani position and continuous movement of the King and the Rook} 1/2-1/2

[Event "hm. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Andrzej Jasik"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "4qk2/2R1p3/4PP2/5p2/5Np1/8/5Brp/3n3K w - - 0 1"] [PlyCount "20"] [EventDate "2021.09.05"] 
 1. Bc5 $1 Nf2+ $1 (1... Qa8 2. Bxe7+ Kg8 3. Nxg2 g3 4. f7+ Kh7 5. Bc5 Kg6 6. f8=Q Qxf8 7. Nf4+ Kf6 8. Rf7+ Qxf7 9. Bd4+ Ke7 10. exf7 Kxf7 11. Nd3 $1 $11) ( 1... Qb8 2. Kxg2 Qxc7 3. Ng6+ Kg8 4. f7+ Kh7 5. Nf8+ Kg7 6. Nd7 $11) 2. Bxf2 g3 $1 (2... Rxf2 3. Ng6+ Qxg6 (3... Kg8 4. f7+ Qxf7 5. exf7+ Kxf7 6. Nxe7 Kf6 7. Nxf5 $1 Rxf5 8. Kxh2 $11) 4. Rc8+ Qe8 5. Rxe8+ Kxe8 6. f7+ Kf8 {Stalemate}) 3. Ng6+ $1 Qxg6 4. Rc8+ Qe8 5. Rxe8+ (5. fxe7+ $2 Kxe7 6. Bc5+ Kf6 7. Rxe8 Re2 $19 ) 5... Kxe8 6. f7+ (6. Kxg2 $2 gxf2 $19) 6... Kf8 7. Be3 $1 ({Thematic try;} 7. Bd4 $2 f4 $1 {Zugzwang} 8. Kxg2 f3+ 9. Kh1 f2 $19) 7... f4 8. Bd4 $1 {Zugzwang} (8. Bxf4 $2 Rg1#) 8... f3 {Rf2;e2;d2;c2:a2} 9. Bg7+ $1 (9. Be3 $2 Rg1+ 10. Bxg1 f2 $1 $19) 9... Kxg7 10. f8=Q+ Kxf8 {Stalemate} 1/2-1/2

[Event "hm. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.09.12"] [Round ""] [White "Michal Hlinka &Mario Garcia"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1q6/6P1/4K1kP/8/2p5/5NpR/7p/8 w - - 0 1"] [PlyCount "41"] [EventDate "2021"] 
 1. Ne5+ $1 (1. Rxg3+ $2 Kh7 2. g8=Q+ Qxg8+ 3. Rxg8 Kxg8 4. Nxh2 c3 $19) 1... Kh7 2. Nd7 Qe8+ 3. Kd6 Qg6+ 4. Ke7 $1 (4. Kc7 $2 Qxh6 5. Rxh6+ Kxg7 6. Rh3 g2 $19) 4... h1=Q $1 5. Rxh1 g2 6. Rh5 $1 (6. Nf8+ $2 Kg8 7. h7+ Qxh7 8. Rxh7 g1=Q 9. Rh8+ Kxg7 10. Rh5 Qa7+ $19) 6... Qe4+ (6... Qxh5 7. Nf6+ $18 { see in main line}) 7. Kf7 Qf3+ 8. Ke7 Qe2+ 9. Kf8 $1 Qf2+ 10. Ke8 $1 (10. Ke7 $2 Qa7 $1 11. Ke6 Qxd7+ 12. Kxd7 g1=Q $19) 10... Qe2+ 11. Kf8 Qf2+ 12. Ke8 Qe2+ 13. Kf8 Qf3+ (13... Qe6 14. Rg5 Qxh6 15. Rh5 $1 $11) 14. Ke7 Qxh5 15. Nf6+ Kxh6 16. g8=Q Qc5+ (16... Qe5+ 17. Kf7 Qc7+ 18. Ke6 $11) 17. Ke6 $1 (17. Kf7 $2 g1=Q 18. Ng4+ Kh5 19. Nf6+ Kh4 20. Qh7+ Kg3 21. Ne4+ Kf3 22. Nxc5 Qxc5 $19) 17... g1=Q 18. Qh7+ {/h8} Kg5 19. Qh5+ (19. Ne4+ $2 Kf4 20. Qh4+ Kf3 21. Nxc5 Qxc5 $19) 19... Kf4 20. Nd5+ Qxd5+ (20... Ke4 21. Qf5+ Kd4 22. Qe5+ Kd3 23. Qc3+ $11 {perpetual checks}) 21. Kxd5 $11 1/2-1/2

[Event "hm. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.10"] [Round ""] [White "MIchael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "7R/5PP1/2p5/q1r3BR/kb6/8/1K6/8 w - - 0 1"] [PlyCount "22"] [EventDate "2021"] 
 {Black has mating threats with Ba3 or Bc3} 1. Ra8 $3 { Forcing the black queen to move from a5 to a8 with rook sacrifice !} (1. Rb8 $2 Rc4 $1 $19) (1. f8=Q $2 Ba3+) 1... Qxa8 ({Secondary line :} 1... Bc3+ 2. Ka2 Kb4+ $1 3. Kb1 $3 (3. Rxa5 Rxa5+ 4. Kb1 Kb3 $1 $19) 3... Qb5 4. Rb8 $3 Qxb8 5. f8=Q Qb5 6. Qxc5+ $3 Kxc5+ 7. Kc2 Qb2+ 8. Kd3 Qb3 9. Bf6+ $1 Kb6 10. Bxc3 $11) 2. f8=Q Ba3+ 3. Ka1 $1 (3. Ka2 $2 Rc2+ 4. Kb1 Rb2+ 5. Ka1 Bxf8 6. g8=Q Kb5+ 7. Kxb2 Ba3+ $19 8. Kb3 Qxg8+) 3... Rc1+ $1 (3... Qa6 4. Rh3 $1 Rxg5 5. g8=Q Bxf8 6. Qa2+ Kb5 7. Rb3+ Bb4 8. Qxa6+ Kxa6 9. Rxb4 $11) 4. Bxc1 Bxf8 5. Ra5+ $3 { Forcing the black queen to move back (forced switchback) from a8 to a5 with another rooksacrifice!!} (5. g8=Q $2 Bg7+ $1 6. Qxg7 Kb3+ $19) 5... Qxa5 (5... Kxa5 6. g8=Q $11) 6. g8=Q $1 Bg7+ $1 7. Bb2 $1 (7. Qxg7 $2 Kb3+ $19) 7... Kb4+ $1 (7... Bxb2+ 8. Kxb2 Qd2+ (8... Qb4+ 9. Kc2) 9. Kb1 Qd3+ 10. Kb2 $11) (7... Kb5+ 8. Kb1 Qe1+ 9. Ka2 $11) 8. Kb1 Bxb2 (8... Qf5+ 9. Ka2 Qa5+ 10. Kb1 $11) 9. Qb3+ $3 (9. Kxb2 $2 Qa3+ 10. Kc2 Qc3+ $19 {Forcing queen exchange}) 9... Kc5 ( 9... Kxb3 {Stalemate}) 10. Kxb2 (10. Qxb2 $2 Qb4 $19) 10... Qb4 11. Ka1 $1 Qxb3 {Model Stalemate. Forced switchbacks (Qa5-a8, Qa8-a5) by rook sacrifices} 1/2-1/2

[Event "hm. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021.12.26"] [Round ""] [White "Alexey Gasparyan"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "3q2k1/4p3/5p1P/1b1pn3/1N3Q1p/1B2KpP1/7n/R7 w - - 0 1"] [PlyCount "24"] [EventDate "2021"] 
 1. Ra8 $3 (1. Bxd5+ $2 Kh7 $1 {a)} (1... Kh8 $2 2. Ra8 Nf1+ 3. Ke4 Qxa8 4. Bxa8 hxg3 5. Nd5 g2 6. Nxf6 g1=Q 7. Kxe5 $11) 2. Qe4+ ({b)} 2. Be4+ Kh8 $1 3. Ra8 Nf1+ 4. Kf2 Qxa8 5. Bxa8 hxg3+ 6. Qxg3 Nxg3 7. Kxg3 Kh7 8. Nd5 Ng6 $19) 2... Kh8 $3 (2... Kxh6 $2 3. Qxh4+ Kg7 4. Ra8 Nhg4+ 5. Kd2 $11) 3. Ra8 Nhg4+ 4. Qxg4 Nxg4+ 5. Kxf3 Ne5+ 6. Kg2 Qxa8 7. Bxa8 hxg3 8. Be4 e6 9. Kxg3 Nf7 $19) 1... Qxa8 (1... Nhg4+ 2. Kd2 $11 {e.g.} Qxa8 3. Bxd5+ Qxd5+ 4. Nxd5 f2 5. Nxe7+ $11) 2. Bxd5+ $1 Qxd5 3. Nxd5 f2 $1 4. Nxf6+ $1 (4. Nxe7+ $2 Kf7 5. Kxf2 Nd3+ 6. Kg2 Nxf4+ 7. gxf4 Bd3 $1 $19) 4... exf6 5. h7+ $1 Kxh7 6. Qxh4+ {A)} Kg7 ({B)} 6... Kg8 7. Kxf2 Neg4+ $1 8. Kg2 Bf1+ $1 9. Kh1 Be2 10. Kg2 Kg7 11. Kh1 $1 $11 { positional draw}) 7. Kxf2 Neg4+ (7... Nhg4+ 8. Kg2 Bc6+ (8... Ne3+ 9. Kf2 N3g4+ 10. Kg2 $11) 9. Kf1 $1 Bb5+ 10. Kg2 $11) 8. Kg2 Bc6+ (8... Be2 9. Kh1 Bd1 10. Kg2 Be2 11. Kh1 $11) 9. Kh3 Be8 10. Kg2 Bc6+ 11. Kh3 Bf3 $1 12. Qg5+ fxg5 $11 { stalemate} 1/2-1/2

[Event "hm. UAPA 16th Draw JT80 J.Copie"] [Site ""] [Date "2021"] [Round ""] [White "Luis Miguel Gonzбlez"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "7k/5p1r/3K1P1P/P5r1/P6Q/4q2B/8/5R2 w - - 0 1"] [PlyCount "31"] [EventDate "2020"] 
 1. Bf5 $1 (1. Rf5 $2 Rg8 $19 ({or} 1... Rg6 $19)) 1... Qd2+ $1 (1... Rg2 2. Qe4 $1 Rd2+ 3. Kc6 $1 Qc3+ 4. Kb7 Rb2+ 5. Ka6 $1 Qxf6+ 6. Ka7 Rxh6 7. Qe8+ Kg7 8. Rg1+ Rg6 9. Rxg6+ fxg6 10. Be4 $1 $11) (1... Rxf5 2. Rxf5 Qe6+ 3. Kc7 $1 Qxf5 4. a6 Qc5+ 5. Kb7 $11) 2. Kc6 $1 (2. Ke7 $2 Rg8 $1 $19) (2. Kc7 $2 Qxa5+ $1 $19 ) 2... Qc3+ $1 (2... Rg8 3. Qf4 $1 Qc3+ 4. Kb7 Qxa5 5. Rb1 $1 $11) 3. Kb7 $1 ( 3. Kb5 $2 Qe5+ $1 4. Kc4 Rg3 $1 5. Qd4 Qxa5 6. Bxh7 Qxa4+ 7. Kd5 Qd7+ 8. Kc5 Qc7+ 9. Kd5 Kxh7 10. Qe4+ Kh8 11. Qe8+ Rg8 12. Qe7 Rg5+ $19) 3... Qb2+ $1 4. Ka7 $1 ({Thematic try:} 4. Kc7 $2 Qxf6 $1 5. Qb4 $1 Rxh6 6. Bg6 Qe5+ $1 $19) 4... Qxf6 (4... Rg8 5. Qf4 $1 Qxf6 6. Bxh7 Qe7+ 7. Kb6 $11) 5. Qb4 $1 { aiming for 6.Qf8+} (5. Bxh7 $2 Rxa5+ $1 $19) 5... Rxh6 6. Bg6 $3 {Plachutta} ( 6. Qf8+ $2 Rg8 7. Qxg8+ Kxg8 8. Bh7+ Kxh7 $1 9. Rxf6 Rxf6 10. a6 Rf4 $1 11. a5 Rb4 $1 $19) (6. Qb6 $2 Qe7+ $1 $19) 6... Rxa5+ $1 (6... Qxg6 7. Qf8+ Kh7 8. Rxf7+ Qxf7+ 9. Qxf7+ Rg7 10. Qxg7+ Kxg7 11. a6 $11) (6... Qd8 7. Qc3+ f6 (7... Kg8 8. Bxf7+ $11) 8. Qxf6+ Qxf6 9. Rxf6 Rhxg6 10. Rxg6 Rxg6 11. a6 $11) (6... Qxf1 $2 7. Qf8#) 7. Qxa5 Qxf1 8. Qe5+ $1 (8. Qc3+ $2 Kg8 $1 9. Qc8+ Kg7 10. Bxf7 Qxf7+ 11. Qb7 Rh5 $1 12. Qxf7+ Kxf7 $19 { and White has lost a tempo regarding the main line}) 8... Kg8 9. Qe8+ Kg7 10. Qxf7+ Qxf7+ 11. Bxf7 Kxf7 12. a5 Ke6 13. a6 $1 (13. Kb7 $2 Rh7+ 14. Kc6 Ke7 $1 15. Kc7 Ke8+ $1 16. Kb8 Kd7 17. a6 Kc6 $19) 13... Kd7 14. Kb7 Rh1 15. a7 Rb1+ 16. Ka8 $1 $11 (16. Ka6 $2 Kc7 $1 17. a8=N+ Kc6 $19) 1/2-1/2