www.arves.org - Problem Paradise 2020

Studies preliminary awarded for the Problem Paradise 2020 Tournament.

SECTION STUDIES WIN

[Event "1/2.p. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Peter Krug"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "r3kb2/P3prnP/5n2/2p1B3/2RR4/6p1/P5p1/K3QB1q w q - 0 1"] [PlyCount "31"] [EventDate "2020"] [TimeControl "300"] 
 1. Rb4 Nd7 (1... cxd4 2. Rb8+ Kd7 3. Rb7+ Ke6 4. Bxd4+ $18) 2. Rb8+ Nxb8 3. Bb5+ Nd7 4. Rxd7 Rf5 (4... Rf6 5. Qxh1 gxh1=Q+ 6. Rd1+ Kf7 7. Rxh1 Rf5 8. h8=Q $18) 5. h8=N $3 (5. h8=Q $2 Qxe1+ $1 6. Rd1+ Kf7 $19) 5... Qxh8 (5... Qxe1+ 6. Rd1#) 6. Rxe7+ Kxe7 7. Bxg7+ Kf7 8. Bxh8 Be7 (8... Bd6 9. Bc4+ Kf8 10. Qe3 Rf1+ (10... Rf4 11. Bd5 Rxa7 12. Bxg2 Re7 13. Qd3 $18) 11. Kb2 g1=Q 12. Qh6+ $18) 9. Bc4+ Ke8 10. Qb1 $1 (10. Qxg3 $2 Rf1+ 11. Kb2 g1=Q 12. Qb8+ Bd8 13. Qe5+ Kf8 14. Qd6+ Ke8 15. Bb5+ Kf7 $11) 10... Bd6 (10... Rxa7 11. Bb5+ Kd8 12. Qd3+ Kc7 13. Qd7+ Kb8 14. Qe8+ Kc7 15. Qc6+ Kd8 16. Qxg2 $18) 11. Bd4 $3 (11. Kb2 $2 Rf2+ $11) 11... g1=Q (11... cxd4 12. Qe4+ Re5 (12... Kd7 13. Qxf5+ $18) 13. Qxa8+) 12. Qxg1 cxd4 13. Qg2 {or} (13. Qh1) 13... Rxa7 14. Qc6+ Ke7 15. Qe4+ Re5 16. Qh7+ $18 {unterminated} 1-0

[Event "3.p. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Amatzia Avni & Yochanan Afek"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/7p/4N2P/7P/4k1P1/4N2n/6K1/6b1 w - - 0 1"] [PlyCount "15"] [EventDate "2020"] 
 1. g5 $1 {Non-capture} (1. Kxh3 $2 Bxe3 2. Nf8 (2. Kh4 Bxh6 3. g5 (3. Ng5+ Kf4 4. Nxh7 Bg7 5. g5 Kf5 $11) 3... Kf5 $11) 2... Bxh6 3. Nxh7 Kf4 $11) (1. Nc5+ $2 Kf4 $1 (1... Kxe3 $2 2. Kxh3 $18) 2. Kxh3 Bxe3 3. Ne6+ Ke5 4. Nf8 Bxh6 5. Nxh7 Kf4 $11) 1... Nxg5 (1... Bxe3 2. g6 Bxh6 3. gxh7 $18) 2. Nxg5+ Kf4 $1 { A counter non-capture from black:} (2... Kxe3 $2 $19 3. Kxg1 (3. Nxh7)) 3. Nh3+ $1 (3. Ne6+ $2 Kxe3 4. Kxg1 Kf3 $11) (3. Nxh7 Bxe3 $11) (3. Kxg1 { again, capture of piece fails:} Kxg5 $11) 3... Kxe3 4. Kg3 $1 { Yet another non-capture:} (4. Kxg1 $2 Kf3 $11) (4. Nxg1 $2 Kf4 $11) 4... Bh2+ $1 5. Kg4 $1 {The final avoidance of capture} (5. Kxh2 $2 Kf3 $11) 5... Bd6 6. Ng5 (6. Kf5 $2 Be7 $1 7. Ng5 Bxg5 8. Kxg5 Ke4 9. Kf6 Kd5 10. Kg7 Ke6 11. Kxh7 Kf7 $11) 6... Bf4 (6... Be7 7. Nxh7 Ke4 8. Ng5+ $18) 7. Nxh7 Bxh6 8. Kf5 $18 ({ Or first} 8. Ng5 Kd4 9. Kf5) 1-0

[Event "hm. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Jarl Henning Ulrichsen"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/1p6/kp5K/1p6/p1pp4/8/PP2B1P1/8 w - - 0 1"] [PlyCount "27"] [EventDate "2020"] 
 {A look at the initial position makes it hard to believe that the theme of the study is stalemate and stalemate avoidance.} 1. Kg5 $1 (1. g4 $2 {draws:} d3 2. Bf1 Ka7 $1 3. g5 d2 4. Be2 b4 5. g6 c3 6. bxc3 b3 7. axb3 axb3 8. g7 b2 9. g8=Q b1=Q $11 {. White cannot both prevent d1=Q and save his pawn on c3; e.g.} 10. Qd5 Qc1) (1. Bf1 $2 {draws:} c3 2. Bd3 ({(} 2. bxc3 dxc3 3. Bd3 Ka5 {is worse.) }) 2... Ka5 3. g4 cxb2 4. g5 Kb4 5. g6 Kc3 6. g7 Kxd3 7. g8=Q Kc2 $11) (1. Bd1 $2 d3 {loses:} 2. a3 b4 3. axb4 c3 4. bxc3 a3 $19) 1... d3 2. Bf1 (2. Bd1 $2 a3 3. bxa3 c3 $19 {and Black wins.}) 2... Ka5 (2... Ka7 3. Kf4 d2 4. Be2 b4 5. Ke3 c3 6. Kd3 cxb2 7. Kc2 Kb8 (7... a3 8. g4) 8. Kxb2 $18 {and White wins.}) (2... b4 {Editor} 3. Kf4 b5 4. Ke3 Kb6 5. g4 Kc5 6. g5 Kd6 7. Bh3 $18) 3. Kf4 Kb4 ( 3... a3 4. bxa3 Ka4 5. Ke3 Kxa3 6. g4 Kxa2 (6... Kb2 7. Bxd3 cxd3 8. Kxd3 Kxa2 9. g5 b4 10. g6 b3 11. g7 b2 12. g8=Q+ $18) 7. Bxd3 cxd3 8. g5 b4 9. g6 b3 10. g7 b2 11. g8=Q+ $18) 4. Ke3 (4. g4 $2 d2 5. Be2 a3 6. bxa3+ Kxa3 7. g5 c3 8. Bd1 Kxa2 9. g6 Kb2 10. g7 c2 11. Bxc2 Kxc2 12. g8=Q d1=Q $19 {and Black wins.}) 4... a3 (4... Kc5 5. Bxd3 cxd3 6. Kxd3 b4 7. b3 {is hopeless for Black. White wins easily with his passed pawn. So Black tries to save himself by creating a stalemate.}) 5. Bxd3 {!} ({Not} 5. bxa3+ $2 Kc3 6. g4 d2 7. Be2 Kb2 { and Black wins.}) 5... cxd3 6. Kxd3 axb2 7. Kc2 Ka3 8. Kb1 b4 9. g4 { And finally the pawn can move.} (9. g3 $2 b3 $11) 9... b5 10. g5 b3 11. axb3 b4 12. g6 b6 13. g7 b5 14. g8=R $1 $18 {Stalemate avoidance} (14. g8=Q $2 { stalemate.}) (14. g8=B $2 {stalemate.}) (14. g8=N $2 Kxb3 $11) 1-0

[Event "c. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Valery Kalashnikov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/4p2P/k7/3K1N2/8/5P2/8/2q5 w - - 0 1"] [PlyCount "23"] [EventDate "2019"] [TimeControl "300"] 
 1. h8=Q e6+ $1 {double attack} (1... Qd1+ {Editor} 2. Nd4 $18) 2. Kxe6 (2. Ke5 $6 Qe1+ $1 (2... exf5 $2 {Editor} 3. Qf6+ $18) 3. Kd6 (3. Kf4 Qd2+ $1 4. Ne3 Qb4+ 5. Kg3 Qe1+ $1 6. Kf4 Qb4+ 7. Kg5 Qc5+ 8. Kf4 Qb4+ {positional draw}) 3... Qb4+ $1 4. Kxe6 Qb3+ $11 {double attack}) 2... Qc6+ {double attack} (2... Qc4+ 3. Ke5 Qe2+ 4. Kf4 $18) 3. Nd6 Qxf3 4. Qa1+ Kb6 5. Qd4+ Ka6 $1 (5... Ka5 6. Qc5+ Ka4 7. Qb5+ Ka3 8. Nc4+ $18) (5... Kc6 {Editor} 6. Qc4+ Kb6 7. Qb4+ $18) 6. Qa4+ Kb6 7. Qb4+ $1 (7. Qb5+ $2 Kc7 $1 $11) 7... Ka6 (7... Kc6 8. Qb7+ { diagonal attack}) (7... Kc7 8. Nb5+ Kc8 9. Qc5+ Kb7 10. Qa7+ $18) (7... Ka7 { Editor} 8. Nc8+ Ka8 9. Nb6+) 8. Qb5+ Ka7 9. Nc8+ Ka8 10. Nb6+ Ka7 11. Qa5+ Kb7 (11... Kb8 12. Nd7+ Kc8 13. Qc5+ $18) 12. Qa8+ {diagonal attack} 1-0

SECTION STUDIES DRAW

[Event "1.p. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Jan Timman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "2b2n2/p3NR2/pP2p1p1/4P1p1/1kp5/2q2PP1/6KP/4N3 w - - 0 1"] [PlyCount "30"] [EventDate "2020"] 
 1. Nc6+ $1 (1. bxa7 $2 Bb7 2. Nf5 Qb2+ 3. Kf1 Ka4 $19) 1... Ka4 (1... Kc5 2. bxa7 Qb2+ 3. Kh3 Bb7 4. Na5 g4+ 5. fxg4 Bd5 6. Rc7+ Kb6 7. Nxc4+ Bxc4 8. a8=Q Bf1+ 9. Kh4 Qxh2+ 10. Kg5 Qd2+ 11. Kf6 Qf2+ 12. Kg7 Kxc7 13. Qxf8 $11) 2. bxa7 Qb2+ 3. Nc2 $1 (3. Kf1 $2 Bb7 $1 $19) 3... Qxc2+ (3... Bb7 4. N6b4 $11) 4. Kh3 g4+ $1 5. fxg4 (5. Kxg4 $2 Bb7 6. Rxb7 Qf5+ $18) 5... Nh7 $1 6. Rxh7 g5 7. Rf7 Qg6 8. Nd8 $1 (8. a8=Q $2 Qxf7 9. Qxc8 Qf1#) 8... Qe4 (8... Bb7 9. Rxb7 Qd3 10. Kg2 $11) 9. Nc6 $1 (9. Nb7 $2 Bxb7 10. Rxb7 Qh1 $1 11. Rf7 c3 12. Rf8 c2 13. a8=Q Qxa8 14. Rxa8 c1=Q $19) 9... Qxc6 (9... Qg6 10. Nd8 $11) 10. a8=Q Qxa8 11. Rb7 $3 Qb8 $1 (11... c3 12. Rb4+ Ka3 13. Rb3+ Kxb3 $11 {stalemate}) (11... Bxb7 $11 {stalemate}) 12. Rxb8 Bd7 13. Rd8 $1 (13. Ra8 $2 Ka5 14. Rd8 Bc6 15. Ra8 Bb7 $1 $19) (13. Rb7 Bb5 14. Kg2 Bc6+ 15. Kh3 Ka5) 13... Bc6 14. Ra8 $1 (14. Rc8 $2 Kb5 $19) 14... Kb5 15. Rxa6 Kxa6 $11 {stalemate} 1/2-1/2

[Event "2.p. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/2b4p/6P1/8/1K3B2/1n2p3/1k6/1n6 w - - 0 1"] [PlyCount "16"] [EventDate "2020"] 
 1. gxh7 $1 (1. g7 e2 2. g8=Q e1=Q+ $19) (1. Bxc7 hxg6 $19) 1... Ba5+ $1 (1... Bxf4 2. h8=Q+ $11) (1... e2 2. h8=Q+ $11) 2. Kc4 $1 (2. Kb5 e2 3. h8=Q+ Nc3+ $19) 2... e2 ({Second line :} 2... N3d2+ $5 3. Kd3 $3 (3. Kd5 e2 4. h8=Q+ Nc3+ $1 5. Kc6 e1=Q $19) 3... Bc3 4. Bxe3 $1 (4. Kxe3 $2 Kc2 $1 { White has no way to block a1-h8 diagonal}) 4... Nf3 $1 (4... Kb3 {for example} 5. h8=Q Bxh8 6. Bxd2) 5. Ke2 $3 (5. Ke4 Nbd2+ $1 6. Kf5 Kc2 7. Bh6 Nh4+ $1 $19) 5... Nh4 6. Kd3 $3 Nf5 7. Bg1 $3 (7. Bf2 Bh8 $1 8. Ke4 Ng7 $1) 7... Bh8 (7... Na3 8. Ke4 Ng3+ 9. Kd5) 8. Ke4 $1 Ng7 9. Ke5 $1 Nd2 10. Kf6 $1 $11) ({ Another important line :} 2... N1d2+ $5 3. Kd5 $3 ({Now} 3. Kd3 { is not enough -} Nc5+ 4. Kxe3 Bc3 $19 { Black is winning because the way to block a1-h8 diagonal is too long}) 3... Bc3 4. Bxe3 {And then blocking Ke6-f7 and bishop to f6 or g7}) 3. h8=Q+ Bc3 4. Qh2 $1 N1d2+ (4... N3d2+ 5. Bxd2 Nxd2+ {The same}) 5. Bxd2 Nxd2+ 6. Kd3 $1 e1=Q 7. Qb8+ Kc1 ({Main :} 7... Nb3 8. Qxb3+ $1 Kxb3 $11) 8. Qb2+ $1 Kxb2 $11 { stalemate} (8... Bxb2 {stalemate}) 1/2-1/2

[Event "4.p. Problem Paradise "] [Site ""] [Date "2019"] [Round ""] [White "Michal Hlinka & Lubos Kekely"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/4pB2/3k4/1P6/5P1R/1n1p4/5K2 w - - 0 1"] [PlyCount "49"] [EventDate "2018"] 
 1. Rh5+ Kd6 (1... e5 2. Rxe5+ Kd6 3. Re1 $11) (1... Kc6 2. b5+ Kd7 3. Rh7+ { as main}) (1... Kc4 $2 2. Rh4+ Kb3 3. Rd4 $18) 2. Be5+ Kc6 3. b5+ $1 Kb6 4. Bd4+ Kb7 5. Rh7+ Kc8 6. Rh8+ Kd7 7. Rh7+ Ke8 8. Rh8+ Kf7 9. Rh7+ Kg8 (9... Kg6 10. Rg7+ Kh5 11. Rh7+ {positional draw}) 10. Rh8+ Kf7 11. Rh7+ Ke8 12. Rh8+ Kd7 13. Rh7+ Kd6 $1 (13... Kc8 14. Rh8+ {positional draw}) 14. Be5+ $1 Kxe5 15. Rd7 d1=Q+ 16. Rxd1 Nxd1 17. b6 {start of second phase} Kd6 18. b7 $1 (18. Ke2 $2 Nc3+ 19. Kd3 Na4 $1 $19) 18... Kc7 19. Ke2 Nb2 {awitchback} 20. Ke3 (20. f4 { Editor} Nc4 $19) 20... Kxb7 21. f4 Kc6 22. f5 $1 (22. Ke4 $2 Kd6 23. f5 e5 24. f6 Na4 25. f7 Nc5+ $19) 22... e5 23. f6 (23. Ke4 {Editor} Kd6 24. f6 Na4 $19) 23... Nc4+ (23... Kd6 24. f7 $11) 24. Ke4 Kd6 25. f7 {draw. Study with two phases. Long fight against promotion of black pawn. Multiple refusals to capture. Sacrifices. Positional draws. Switchback.} 1/2-1/2

[Event "hm. Problem Paradise "] [Site ""] [Date "2020"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1K6/5P2/rk2PP2/8/1b1Pb2P/8/1N6/8 w - - 0 1"] [PlyCount "25"] [EventDate "2020"] 
 1. Nc4+ Kc6 (1... Kb5 2. e7 Kxc4 3. e8=Q $11) 2. h5 $3 {Ignoring material advantage and mate threats and forwarding most unexpected, far of promotion located pawn} ({Thematic try :} 2. e7 Bd6+ 3. Nxd6 Kxd6 4. d5 $1 (4. e8=N+ Kd7 5. Nc7 {even} (5. d5) 5... Rb6+) 4... Bxd5 5. e8=N+ Kd7 6. Nc7 Rxf6 7. Nxd5 Rxf7 8. h5 Kd6 $1 9. Nb6 Kc6 10. Nc4 Rf8+ 11. Ka7 Rf4 $1 12. Na5+ (12. Ne5+ Kc7 13. Ka6 Rf6+ 14. Ka7 Rf5 $19) 12... Kb5 13. Nb7 Rd4 $1 14. h6 Rd7 $19) (2. Ne5+ Kb5 $1 3. e7 Bd6+ 4. Kc8 Bf5+ 5. Kb7 Rb6+ 6. Ka7 Bb8+ 7. Ka8 Be4+ {mating}) 2... Ra1 ({or} 2... Bd5 3. e7 Bd6+ (3... Bxf7 4. Ne5+) 4. Nxd6 Kxd6 5. e8=N+ Kd7 6. Nc7 Rxf6 (6... Rb6+ 7. Ka7 Rxf6 8. Nxd5) 7. Nxd5 Rxf7 $11) 3. Ne5+ $1 ( 3. e7 $2 Bd6+ 4. Nxd6 Kxd6 5. e8=N+ Kd7 $19) 3... Kd5 (3... Kb6 4. Nd7+) (3... Kb5 4. e7) 4. f8=Q $1 (4. e7 Bd6+ 5. Kc8 Ra8+ 6. Kb7 Ke6+ 7. Kb6 Bxe7 8. fxe7 Kxe7 $19) 4... Bxf8 ({Important line :} 4... Bd6+ $5 5. Qxd6+ Kxd6 6. Nf7+ $1 Kxe6 7. Ng5+ $1 Kf5 8. Nxe4 Kxe4 9. h6 $1 { And Black has nothing better then to force a draw} Rb1+ 10. Kc8 Ra1) 5. e7 $1 Bxe7 6. fxe7 Kd6 $1 7. e8=N+ $3 Ke7 {It is material equality, but Black is threating to win the knight and in the same time Kd8} (7... Ke6 8. Ng7+) 8. Ng7 $1 (8. Nc7 Rb1+ $19) 8... Ra6 $1 {Main threat is Kf8 to win the knight} (8... Rh1 9. Kc7 $11) (8... Rg1 9. h6) 9. Kc7 $3 (9. Nc4 Kd8) 9... Kf8 $1 { Seems Black winning the knight} 10. h6 $1 (10. d5 $2 Ra7+ $1 11. Kb6 (11. Kd6 Kxg7) 11... Rxg7 $19) 10... Rxh6 11. d5 $1 Kxg7 (11... Bxd5 12. Nf5 $11) 12. d6 {and must give up a piece for the pawn} Bf5 13. d7 $11 1/2-1/2