www.arves.org - Problem Paradise 2019

Studies awarded for the Problem Paradise tournament 2019.

Section Win:

[Event"Prize Problem Paradise 2019"] [Site ""] [Date "2019.10.08"] [Round ""] [White "Peter S. Krug"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/5R2/P6p/p3b1rN/P4p2/5p1P/7R/5k1K w - - 0 1"] [PlyCount "41"] [EventDate "2017"] 
 1. Rc2 $1 (1. Rd2 $2 f2 2. Rxf4 Rg1+ 3. Kh2 Rg2+ 4. Kh1 Rg1+ $11) 1... Rg1+ ({ main} 1... Rxh5 2. a7 $1 (2. Rb7 $2 Rxh3+ 3. Rh2 Rxh2+ 4. Kxh2 Bd4 $11) 2... Rxh3+ 3. Rh2 Rg3 4. Rh5 $1 Bd4 5. a8=Q Rg1+ 6. Kh2 Rg2+ 7. Kh3 Rg3+ 8. Kh4 Bf2 9. Qa6+ $1 (9. Qxf3 $2 Rxf3+ 10. Kg4 Ke2 11. Rxf4 Rg3+ 12. Kf5 Rg5+ 13. Rxg5 hxg5 $11) 9... Kg2 10. Rxh6 Rg6+ 11. Kh5 Rxa6 12. Rxa6 Bg3 13. Rg6 $1 f2 14. Rxf4 $18) 2. Kh2 Rg2+ 3. Rxg2 fxg2 4. Ng3+ Kf2 5. Ne4+ Kf1 6. Nd2+ Kf2 7. Nf3 Kxf3 8. Rd7 Kf2 (8... Ke2 9. Kxg2 f3+ 10. Kh1 f2 11. Rf7 Bd4 12. Kg2 $18) 9. Rd2+ Kf1 (9... Ke1 10. Kxg2 $1 Kxd2 11. a7 $1 $18) 10. Rxg2 f3+ 11. Rg3 f2 ( 11... Bb8 12. a7 Bxa7 13. Rxf3+ $18) 12. a7 Bxg3+ 13. Kxg3 Kg1 (13... Ke2 14. a8=Q f1=Q 15. Qa6+ $1 Ke1 16. Qxa5+ $1 $18) 14. a8=Q f1=Q 15. Qa7+ Kh1 16. Qb7+ Kg1 17. Qb6+ Kh1 18. Qc6+ (18. Qxa5 $2 Qd3+ $11) 18... Kg1 19. Qc5+ $1 (19. Qc2 $2 Qe1+ $1 $11) 19... Kh1 20. Qd5+ Kg1 21. Qd2 $1 $18 1-0

Section Draw:

[Event"1/2.Prize. Problem Paradise 2019"] [Site ""] [Date "2019.11.01"] [Round ""] [White "Christopher  Yoo"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/2P1P2P/2QP4/8/N2P4/7P/2P1nqP1/4k2K w - - 0 1"] [PlyCount "55"] [EventDate "2019"] 
 1. Qc3+ {White deflects the Black knight off of e2.} Nxc3 2. h8=Q $1 (2. e8=Q+ $2 Kf1 3. Qf7 Qxf7 4. c8=Q Qf2 5. Qc4+ Ne2 $19) 2... Qf1+ 3. Kh2 Qf4+ 4. Kh1 Ne2 5. Qh4+ $1 Qxh4 6. e8=Q (6. e8=R $11) 6... Qf4 7. Qxe2+ $1 Kxe2 8. Nc5 $1 ( 8. c8=Q $2 Kf2 $1 $19 {White's pawns get in the way again.}) (8. Nb2 $2 Qf1+ 9. Kh2 Qf8 $19) 8... Qf1+ ({B)} 8... Qf5 9. Kh2 $1 (9. Ne4 $2 Ke3 10. Nc5 Kf2 $19) (9. d7 $2 Qf1+ 10. Kh2 Qf4+ 11. Kh1 Qxc7 $19) 9... Kf1 10. Kg3 $1 Qf2+ 11. Kg4 Qxd4+ 12. Kf5 Qxc5+ (12... Qd5+ 13. Kf6 Qxd6+ 14. Ne6 $11) 13. Ke6 Qc6 14. Ke7 $1 (14. c4 $2 Qe8+ $1 15. Kd5 Kxg2 16. h4 Kg3 17. h5 Kf4 18. h6 Kf5 19. h7 Qa8+ 20. Kc5 Ke6 $19) 14... Ke2 15. c4 $1 Kd3 16. c5 Kd4 17. Kd8 $1 $11) 9. Kh2 Qf8 10. Ne4 $1 (10. Kh1 $2 Kf1 $1 $19) 10... Qf4+ 11. Kh1 (11. Kg1 $11) 11... Qc1+ 12. Kh2 Qxc2 13. h4 $1 (13. Nc5 $2 Kf1 $19) 13... Ke3 14. Nf6 $1 (14. Ng5 $2 Qf5 15. h5 Qg4 16. g3 Kf2 17. Nh3+ Kf3 18. Ng1+ Ke3 19. h6 Qf5 $19) 14... Kxd4 (14... Qf5 15. Kg3 Qe6 16. d7 $11) 15. Ng8 $1 {This move threatens Ne7.} Qc5 16. Kh3 $1 (16. Kh1 $2 Ke3 17. Nf6 Qf5 18. d7 Kf2 19. d8=Q Qb1+ 20. Kh2 Qg1+ 21. Kh3 Qxg2#) 16... Qf5+ 17. Kh2 $1 (17. g4 $2 Qf3+ 18. Kh2 Qc6 $19) 17... Qe6 18. Kg1 $1 (18. Ne7 $2 Qxd6+ $1 $19) 18... Qe1+ 19. Kh2 Qxh4+ 20. Kg1 Qe1+ 21. Kh2 Qe6 22. Kg1 $1 Qe3+ 23. Kh2 $1 (23. Kh1 $2 Qc1+ 24. Kh2 Ke3 $19) 23... Qf4+ 24. Kh3 Qf5+ 25. g4 Qh7+ (25... Qf3+ 26. Kh4 Qh1+ (26... Qf8 27. d7 Qf2+ 28. Kg5 $11) 27. Kg3 Qc6 28. Kh4 Qc1 29. Kh5 Ke5 30. Ne7 $11) 26. Kg3 Qd7 27. Kh3 $1 (27. Kf2 $2 Qf7+ 28. Kg3 Qb3+ $19) 27... Qe6 28. Ne7 $1 $11 1/2-1/2

[Event"3.Prize. Problem Paradise 2019"] [Site ""] [Date "2018.12.01"] [Round ""] [White "Amatzia Avni"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/3k4/Pp2R3/4B3/8/P1KP4/pR1p1n2/5r2 w - - 0 1"] [PlyCount "31"] [EventDate "2018"] 
 1. Rd6+ Ke7 2. Bf6+ $1 (2. a7 {?} a1=Q 3. a8=Q Qc1+ 4. Rc2 Qxc2+ 5. Kxc2 d1=Q+ 6. Kc3 Qa1+ 7. Kb3 Rb1+ 8. Ka4 b5+ 9. Ka5 Qxa3+ $19) 2... Kxd6 (2... Kf7 3. a7 a1=Q 4. a8=Q Qc1+ 5. Rc2 Qxc2+ 6. Kxc2 d1=Q+ 7. Kc3 $11) 3. Kxd2 (3. Rxb6+ $2 Kc7 4. Kxd2 Kxb6 $19) 3... Ne4+ (3... a1=Q 4. Rxb6+ Kc5 5. Bxa1 Kxb6 6. Bd4+ Kxa6 7. Ke2 {=}) (3... Ng4 4. Bd4 Rf2+ 5. Bxf2 a1=Q 6. Rxb6+ Kc7 (6... Kd5 7. Rb5+ Ke6 8. Rb6+ Kf5 9. Rb5+ Kf4 10. Bc5 Qa2+ 11. Kc3) 7. Rb7+ Kc8 8. Bb6 $11) 4. dxe4 Rxf6 (4... a1=Q 5. Rxb6+ Kc5 6. Bxa1 {=}) 5. e5+ $1 (5. Rxa2 $2 Rf2+ 6. Kc3 Rxa2 {-+}) 5... Kd7 (5... Kxe5 6. Rxa2 {leads to the main line when the BK is too far from white's a-pawn}) 6. e6+ $1 Kd6 (6... Kxe6 7. Rxa2 $11) 7. Rxa2 {now!} Rf2+ 8. Kc3 Rxa2 9. e7 $1 Kxe7 10. Kb4 Rb2+ (10... Rg2 11. Kb5 Kd7 12. a7 Rg8 13. Kxb6 $11) 11. Ka4 b5+ 12. Ka5 Ra2 13. Kb4 Rb2+ 14. Ka5 Rb3 15. a4 Ra3 16. Kxb5 $11 1/2-1/2

[Event"4.Prize. Problem Paradise 2019"] [Site ""] [Date "2019.10.30"] [Round ""] [White "Petr Kiryakov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "4b3/8/8/5k2/3p1ppp/2N1P3/2K3R1/8 w - - 0 1"] [PlyCount "22"] [EventDate "2019"] [TimeControl "600"] 
 1. Ne2 $1 d3+ (1... dxe3 2. Nd4+ Kg5 3. Ne6+ {=}) 2. Kxd3 Bb5+ 3. Kd2 Bxe2 4. Rxe2 (4. Rh2 $2 g3 $19) (4. exf4 $2 Bf3 5. Rh2 g3 6. Rxh4 g2 $19) 4... f3 (4... g3 5. e4+ Ke5 6. Re1 h3 7. Ke2 Kxe4 8. Kf1+ Kf3 9. Kg1 h2+ 10. Kh1 {= White brings rook to e1 and king to h1}) 5. Rf2 Ke4 (5... h3 6. Ke1 Ke4 7. Rh2 { similar to solution}) 6. Rh2 h3 7. Ke1 $1 (7. Rh1 $2 g3 $1 8. Rxh3 g2 9. Rg3 f2 10. Rxg2 f1=Q $19 {No fortress R+p vs Q}) 7... Kxe3 8. Rh1 $1 {Here white has king e1 and rook h1 - compare with 4...g3 line!} f2+ (8... Kf4 9. Kf1 Kg3 (9... Ke3 10. Ke1 {=}) 10. Rg1+ Kf4 11. Rh1 $1 {= Positional draw}) 9. Kf1 Kf3 10. Rxh3+ (10. Rh2 $2 Kg3 $1 11. Rxf2 h2 12. Rg2+ Kh3 $19) 10... g3 (10... gxh3 $11 {Stalemate}) 11. Rh2 gxh2 $11 {Stalemate} 1/2-1/2

[Event"Sp.Prize. Problem Paradise 2019"] [Site ""] [Date "2019.05.27"] [Round ""] [White "Michal Hlinka & Lubos Kekely"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "K7/P1kN3P/pp4R1/R4p2/3qP3/5b2/8/3N4 w - - 0 1"] [PlyCount "20"] [EventDate "2019"] 
 1. Rc6+ $1 {closing the longest diagonal} Kxc6 2. Rd5 Qxe4 (2... Qh8+ 3. Nb8+ Kc7 4. Rd7+ {(ab)} Kc8 5. Nc3 $1 {(ba)} Qxc3 6. h8=Q+ $1 Qxh8 7. Rc7+ $1 Kxc7 { double pin stalemate} (7... Kd8 8. Kb7 Bxe4+ 9. Nc6+ Bxc6+ 10. Rxc6 $11)) (2... Qg7 {e.g.} 3. Nc3 Kc7 4. Rd3 {/Nb8=}) 3. Nc3 Qe8+ (3... Qh4 4. Nb8+ Kc7 5. h8=Q $1 Qxh8 6. Nb5+ {as main}) 4. Nb8+ Kc7 5. h8=Q $1 Qxh8 6. Nb5+ $1 Kc8 (6... axb5 {double pin stalemate}) 7. Nd6+ Kd8 8. Nb7+ Ke7 (8... Kc7 9. Rc5+ $1 ({or } 9. Rd7+ Kc8 10. Rc7+ Kxc7 $11) 9... bxc5 {double pin dtalemate}) 9. Re5+ $1 ( 9. Rd8 $2 Qh1 10. Rd7+ Kf6 11. Rc7 Ke6 12. Nxa6 Qh8+ 13. Nb8 f4 $19) 9... Kf6 ( 9... Qxe5 10. Nc6+ Bxc6 {model pin stalemate}) 10. Rxf5+ $1 Kxf5 {model double pin stalemate. Synthesis of many pin stalemates.} 1/2-1/2

[Event"2.hm. Problem Paradise 2019"] [Site "ﾊ黑・鉅"] [Date "2019"] [Round ""] [White "Valery Kalashnikov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/3n3K/6P1/3PP2k/8/8/5p2/8 w - - 0 1"] [PlyCount "27"] [EventDate "2019"] [TimeControl "300"] 
 1. g7 f1=Q 2. g8=Q Qf5+ 3. Kh8 $1 (3. Kg7 $2 Qxe5+ 4. Kf7 Qxd5+ 5. Kg7 Qd4+ $1 6. Kf7 Ne5+ $19) 3... Qxe5+ 4. Qg7 Nf6 (4... Qb8+ 5. Qg8 Qb2+ 6. Qg7 Nf6 7. Qf7+ Kg5 8. Kg7 $11) 5. Qf7+ Kh6 6. Qg7+ Kh5 7. Qf7+ Kg5 (7... Kh6 8. Qg7+ { positional draw}) 8. Kg7 $1 (8. Qg7+ $2 Kf5 9. Qf7 Qg3 10. Qe6+ Kg6 $19) (8. Qe6 $2 Qh2+ 9. Kg7 Qh7+ 10. Kf8 Kg6 $19) (8. d6 $2 Qh2+ 9. Kg7 Qh6#) 8... Nxd5+ 9. Kh7 (9. Kf8 $2 Qd6+ 10. Kg8 Ne7+ 11. Kg7 Qh6#) (9. Kg8 $2 Ne7+ 10. Kf8 Ng6+ 11. Kg8 Qh8#) 9... Qh2+ (9... Nf6+ 10. Kg7 {positional draw}) 10. Kg8 (10. Kg7 $2 Qh6+ 11. Kg8 Nf6+ $19) 10... Nf6+ 11. Kf8 Qd6+ (11... Qb8+ 12. Kg7 Nh5+ 13. Kh7 Nf6+ 14. Kg7 {positional draw}) 12. Kg7 (12. Qe7 $2 Qb8+ 13. Kf7 Qg8#) 12... Nh5+ 13. Kg8 (13. Kh8 $2 Qh6+ 14. Qh7 Qf6+ 15. Kg8 Qd8+ 16. Kf7 Qd7+ $19) 13... Nf6+ 14. Kg7 {positional draw} (14. Kh8 $2 Qh2+ 15. Kg7 Qh6#) 1/2-1/2

[Event"3.hm. Problem Paradise 2019"] [Site ""] [Date "2019.11.01"] [Round ""] [White "Christopher Yoo"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "5n2/3Pk3/8/1R6/r6p/4PK2/8/8 w - - 0 1"] [PlyCount "21"] [EventDate "2019"] 
 {[#]} 1. e4 $1 {This move cuts off the Black rook from the h4 pawn.} (1. Rh5 $2 Ng6 $1 2. Rg5 Ra6 3. Rd5 Kd8 4. Kg4 Ra1 5. Kf3 Ra4 6. Rg5 Ra6 7. Rd5 Rf6+ 8. Kg4 Rf2 9. Kh5 Rg2 $19) 1... Ng6 (1... Kxd7 2. Rb6 $1 (2. Rh5 $2 Ng6 $19) 2... Ne6 3. Rb2 Kd6 4. Rh2 $11) 2. Rb6 Ra3+ (2... Ne5+ 3. Kf4 Ra5 4. Rh6 {/b3=}) 3. Kg4 Kxd7 (3... Rg3+ 4. Kf5 h3 5. Rb8 $1 Kxd7 6. Rb7+ Ke8 7. Rh7 Kf8 8. e5 $11 { The difference between this position and the main line is that Black's pawn is on h3. The Black pawn is more vulnerable on h3.} Kg8 9. Rh5 Kg7 10. e6 $11) 4. Kf5 $1 (4. Rb7+ Ke6 $19) 4... Rg3 5. Rb7+ Ke8 6. Rh7 Kf8 7. Kf6 Kg8 8. Rh6 $1 { This is the key move.} (8. Rh5 $2 {Thematic try} h3 9. Kf5 Kg7 {mutual zugzwang }) 8... h3 9. Kf5 Kg7 10. Rh5 {mutual zugzwang} Rf3+ 11. Kg4 $11 1/2-1/2

[Event"Sp.hm. Problem Paradise 2019"] [Site ""] [Date "2019.10.24"] [Round ""] [White "Marco Campioli"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/7P/8/pp5r/P1p5/3k4/8/R3K3 w Q - 0 1"] [PlyCount "27"] [EventDate "2019"] 
 1. O-O-O+ (1. Rd1+ $2 Ke3 $19) (1. axb5 $2 Rh1+ 2. Kf2 Rxh7 $19) 1... Kc3 2. axb5 Rxh7 (2... a4 3. Kb1 Rxh7 4. Ka2 $11) 3. Kb1 (3. b6 $2 a4 $1 (3... Rb7 $2 4. Rd5 $1 $11) 4. Rg1 (4. Kb1 $2 Rb7 5. Ka2 Rxb6 6. Ka3 Kc2 7. Rg1 Rd6 $19) 4... a3 5. Rg3+ Kb4 6. Kb1 c3 7. Ka2 Rh2+ 8. Ka1 Kb3 $19) 3... Rh5 $1 (3... Kb3 4. b6 $1 a4 (4... Rb7 {HM}) 5. Ka1 $11) (3... Rb7 $1 4. Rd5 $1 a4 5. Ka2 Kb4 6. Kb2 Rg7 (6... Rxb5 7. Rd7 c3+ 8. Kc2 a3 9. Rd4+ $11) 7. b6 Rg2+ 8. Ka1 {/b1=}) 4. Rc1+ (4. b6 $2 Rb5+ $19) 4... Kd3 (4... Kb3 5. b6 c3 6. Rg1 $11) (4... Kb4 { HM} 5. b6 Rb5 6. b7 {/Kc2=}) 5. Rd1+ (5. b6 $2 Rb5+ $19) 5... Kc3 6. Rc1+ Kb3 ( 6... Kb4 {HM} 7. b6 Rb5 8. Kc2 Rxb6 9. Rb1+ Kc5 10. Ra1 Ra6 11. Rg1 a4 12. Kb2 Kb4 13. Rg7 a3+ 14. Ka2) 7. b6 c3 (7... Rb5 8. Ka1 Ka3 9. Rxc4 $11) 8. Rg1 $3 ( 8. Re1 $2 Rb5 $1 9. Ka1 c2 10. Re3+ Kc4 11. Re4+ Kc3 12. Re3+ Kd2 $19) (8. Rf1 $2 Rb5 9. Ka1 c2 10. Rf3+ Kc4 11. Rf4+ Kd3 12. Rf3+ Ke2 13. Rc3 Kd2 $19) (8. b7 $2 Rb5 9. Rc2 Kc4+ $1 10. Ka2 (10. Kc1 Kd3 11. Ra2 Rh5 $19) 10... Rxb7 $19) 8... Rb5 (8... c2+ 9. Kc1 $11) 9. Ka1 $1 (9. Rg2 $2 Ka3+ 10. Kc2 Rb2+ 11. Kxc3 Rxg2 $19) (9. Kc1 $2 Rxb6 10. Rg5 a4 $19) 9... c2 (9... Rxb6 $2 10. Rb1+ $18) 10. Rg3+ Ka4 $1 (10... Kb4 11. Kb2 Kc5+ 12. Kxc2 $11) 11. Rc3 $1 (11. Rg4+ $2 Ka3 12. Rg3+ Rb3 $19) (11. Rg1 $2 Ka3 12. Rc1 Rd5 13. Rxc2 Rd1+ $19) 11... Rb1+ 12. Ka2 c1=Q 13. Rxc1 Rxc1 14. b7 $11 1/2-1/2

[Event"Sp.hm. Problem Paradise 2019"] [Site ""] [Date "2019.10.19"] [Round ""] [White "Poul Rewitz"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1n6/8/2nB4/5kp1/8/1P1K2P1/8/8 w - - 0 1"] [PlyCount "8"] [EventDate "2019"] 
 {[#]} 1. g4+ $1 (1. Ba3 $2 g4 $19 ({or} 1... Nd7 2. g4+ Kxg4 3. Bc1 Nb4+ 4. Kc4 Ne5+ $1 $19)) (1. Kc4 $2 Ke6 2. Ba3 g4 $19 3. b4) (1. b4 $2 Ke6 2. Bf8 Nd7 3. Bh6 g4 4. b5 Nce5+ 5. Ke4 Nf6+ 6. Kd4 Nf3+ 7. Kc4 Nd7 $19) 1... Kxg4 (1... Ke6 2. Ba3 $1 $11 {With the idea Bc1, Bxg5 followed by b4.} (2. Bc5 $2 Ne5+ 3. Ke4 Nxg4 $19)) 2. Ke4 $1 (2. b4 $2 Kf5 $1 3. b5 Ne5+ 4. Kd4 Nbd7 5. b6 Ke6 $1 6. Bc7 Nc6+ $1 7. Kc4 Nde5+ $1 8. Kc5 (8. Kb5 Kd7 $1 $19) 8... Na5 $1 9. Kb5 Nb7 $19) 2... Na6 (2... Kh3 3. Kd5 $1 g4 4. b4 $11) (2... Nd7 3. Kd5 $1 Nde5 (3... Nce5 4. Be7 $1 Kf5 5. Bxg5 $11) 4. b4 $1 (4. Bxe5 $2 Nxe5 5. Kxe5 Kf3 6. b4 g4 7. b5 g3 8. b6 g2 9. b7 g1=Q $19) 4... Kf5 5. b5 $11) 3. b4 $1 (3. Kd5 $2 {Now black can block the pawn before the Troitzky line.} Nab4+ $19 (3... Ncb4+ $19)) 3... Naxb4 (3... Ncxb4 4. Be7 Kh5 5. Bxg5 $11) 4. Bf4 $3 gxf4 {Stalemate.} 1/2-1/2