www.arves.org - The Problemist 2010-2011

Studies awarded in the The Problemist Magazine tournament 2010-2011.

[Event "The Problemist, 2 prize"] [Site ""] [Date "2011"] [Round ""] [White "E1070 Oleg Pervakov (Russia)"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "7k/5b1p/1P1P2pK/p5P1/P7/1p5p/p4n1P/R3R3 w - - 0 1"] [PlyCount "19"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 {308MB, Fritz9.ctg} 1. Re4 $1 ({Try} 1. Rg1 $2 b2 2. Rab1 $1 (2. d7 $2 bxa1=Q 3. d8=Q+ Bg8 4. Qf6+ Qxf6 5. gxf6 Ng4+ $1 6. Kg5 Nxh2 7. Kf4 g5+ 8. Kg3 Nf3 $1 {Black wins}) 2... axb1=Q 3. b7 Qa1 4. b8=Q+ Bg8 5. d7 b1=Q 6. Qxg8+ Kxg8 7. d8=Q+ Kf7 8. Qd7+ Kf8 9. Rxb1 Qxb1 10. Qd8+ Kf7 11. Qf6+ Ke8 12. Qxf2 Qe4 $1 13. Kxh7 Qxa4 14. Qe3+ (14. Kxg6 Qe4+ 15. Kh6 Qe5 $1 $11) 14... Kf7 15. Qf3+ ( 15. Qxh3 Qe4 16. Qd7+ Qe7 17. Qxe7+ Kxe7 18. Kxg6 a4 $11) 15... Ke8 16. Qxh3 Qe4 17. Qc8+ Kf7 18. Qg8+ (18. Qc7+ Ke8 19. Qxa5 Qe7+ $11) 18... Ke7 19. Qg7+ Kd6 20. Qxg6+ Qxg6+ 21. Kxg6 a4 $11 {EGTB}) 1... b2 2. Rb1 $3 (2. d7 $2 bxa1=Q 3. Re8+ Bg8 $11) 2... Nxe4 (2... axb1=Q 3. b7 Qa1 4. b8=Q+ Bg8 5. d7 Ng4+ (5... b1=Q 6. Qxg8+ Kxg8 7. d8=Q+ Kf7 8. Re7#) 6. Rxg4 b1=Q 7. Qxg8+ Kxg8 8. d8=Q+ Kf7 9. Qd7+ Kf8 10. Rf4+ Qf5 11. Rxf5+ gxf5 12. Kxh7 {win.}) 3. b7 $1 ({ Logical try} 3. d7 $2 Nf6 $1 4. d8=Q+ Ng8+ 5. Qxg8+ Bxg8 6. b7 a1=B $1 7. b8=B $5 Ba2 $1 8. Be5+ Kg8 9. Bxb2 Bxb1 $11) 3... Nf6 $1 4. b8=Q+ Ng8+ 5. Qxg8+ Bxg8 6. d7 a1=B $1 7. d8=N $1 (7. d8=B $2 Ba2 $1 8. Bf6+ Kg8 9. Bxb2 Bxb1 $11) (7. d8=Q $2 {stalemate.}) 7... Bb3 $1 8. Re1 $1 (8. Rf1 $2 Kg8 9. Nc6 Bf7 $1 $11) 8... b1=Q (8... Kg8 9. Re8#) (8... Bxa4 9. Rf1 $1 Kg8 10. Ne6 Bb3 11. Rf8#) 9. Re8+ (9. Rxb1 $4 Bg7# $1 {Mate by promoted bishop!}) 9... Bg8 10. Nf7# $1 { Mate by promoted knight!} 1-0

[Event "The Problemist, 3 prize"] [Site ""] [Date "2011"] [Round ""] [White "E1069 Peter Krug (Austria)"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "7R/5p2/8/1P3nP1/8/8/1k3r2/1n5K w - - 0 1"] [PlyCount "25"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 1. b6 Nd6 2. Rh6 $1 Nb7 (2... Rd2 3. b7 Nxb7 4. Rb6+ Kc1 $1 5. Rxb7 Rf2 6. g6 fxg6 7. Rb6 g5 8. Rb5 g4 9. Rb4 g3 10. Rb3 $1 (10. Rg4 $2 Nd2 11. Rxg3 Nf3 12. Rg2 Rf1+) 10... Nd2 11. Rc3+ $1 Kd1 12. Rd3 $1 Ke2 (12... Ke1 13. Re3+ Kd1 14. Rd3 {positional draw.}) 13. Rxg3 Nf3 14. Rg2 $11 {pin.}) 3. Rh7 $1 Nc5 (3... Rf1+ 4. Kh2 Rf2+ 5. Kh1 {positional draw.}) (3... Nc3 4. g6 fxg6 5. Rxb7 Rf6 6. Rb8 Na4 7. b7 Nc5 8. Kg2 Rb6 9. Kg3 Nxb7 10. Kf4 Kc3 11. Kg5 {draw.}) 4. b7 $1 Nxb7 5. g6 Rf1+ $1 (5... fxg6 6. Rxb7+ Kc1 7. Rb6 $11) (5... Rf5 6. g7 $11) 6. Kh2 $1 Rf5 7. Rxf7 (7. g7 $2 Rg5) 7... Rh5+ 8. Kg1 $1 (8. Kg3 $2 Nd6 9. Kg4 Rh1 {win.}) 8... Rg5+ 9. Kh1 $1 Nd6 10. Rf2+ Kc3 11. Rg2 Rh5+ 12. Rh2 $1 (12. Kg1 Rh8) 12... Rg5 13. Rg2 {positional draw.} 1/2-1/2

[Event "The Problemist, 6 prize"] [Site ""] [Date "2011"] [Round ""] [White "E1050 Richard Becker (USA)"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/5k2/5pR1/8/P1p2K2/8/8/7r w - - 0 1"] [PlyCount "31"] [EventDate "2010"] [SourceDate "2005.01.24"] 
 1. Rg3 $1 (1. Rg2 $2 Ra1 2. Re2 c3 3. Ke3 Rxa4 {-+}) (1. Rg4 $2 c3 (1... Ra1 $2 2. Kf5 {=}) 2. Ke3 c2 {-+}) 1... Rf1+ 2. Rf3 (2. Ke4 $2 Ra1 3. Kd4 Rxa4 4. Rg1 f5 5. Ke5 Ra5+ {-+}) 2... Ra1 3. Re3 {zz} Ra2 4. Re1 $1 {zz} ({Logical try} 4. Re4 $2 Rxa4 5. Kg4 Kg6 {zz} 6. Kf4 (6. Rd4 f5+ 7. Kf4 Kf6 8. Rd6+ Ke7 9. Rc6 Kd7 10. Rc5 Kd6 11. Rxf5 Ra3 12. Ke4 Rd3 {-+}) 6... Kh5 7. Rd4 Kh4 8. Kf5+ (8. Re4 Kh3 9. Kf5 (9. Kf3 Ra3+ 10. Ke2 c3 {-+}) 9... Ra5+ 10. Kxf6 Rc5 11. Ke6 c3 {-+}) 8... Kg3 9. Kxf6 Kf3 10. Ke5 Ke3 11. Kd5 Ra5+ 12. Kxc4 Ra4+ {-+}) 4... Ra3 5. Re2 $1 {zz} Ra1 ({MAIN} 5... c3 6. Re4 c2 7. Rc4 Rxa4 8. Kf5 Rxc4 { stalemate}) 6. Re3 Rxa4 7. Re4 {zz} Kg6 8. Rd4 {zz} Kf7 (8... Kh5 9. Rd5+ { (Re4) =}) 9. Re4 Rb4 10. Kg4 {zz} Kg6 11. Kf4 {zz} Kh5 12. Rd4 (12. Kf5 $2 Rb5+ 13. Kxf6 Rc5 14. Ke6 (14. Re2 c3 15. Rc2 Kg4 16. Ke6 Kf3 17. Kd6 Rc8 18. Kd5 Ke3 {-+}) 14... c3 15. Re1 c2 16. Rc1 Kg4 17. Kd6 Rc8 18. Kd5 Kf3 19. Kd4 Ke2 { -+}) 12... Kh4 13. Kf5+ (13. Re4 $2 Kh3 14. Kf5 Rb5+ 15. Kxf6 Rc5 {etc.}) 13... Kg3 14. Kxf6 Kf3 15. Ke5 {(Ke6)} Ke3 16. Kd5 {=} 1/2-1/2

[Event "The Problemist, 2 hm"] [Site ""] [Date "2011"] [Round ""] [White "E1065 Ladislav Salai jr. (Slo"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "4k3/1p6/6K1/N1p5/1p6/2p5/P6P/8 w - - 0 1"] [PlyCount "35"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 1. Nb3 $1 (1. Kg7 c4) 1... c4 2. Nc1 $1 (2. Nd4 $2 Kf8 3. h4 (3. Kf5 Kg7 4. Ke4 Kg6 5. Kd5 b5 6. Kc5 b3 $11) (3. Ne2 Kg8 4. Nc1 Kh8 $1 5. Kf6 Kh7 $1 6. Ke5 Kg6 7. Kd4 b5 8. Kc5 b3 $11) 3... b3 4. axb3 c2 5. Nxc2 cxb3 6. Na3 b2 $11) 2... Kf8 $1 (2... Ke7 3. Kg7 Ke6 4. h4 Kd5 5. h5 b3 (5... Ke4 6. h6 Ke3 7. h7 Kd2 8. h8=Q Kxc1 9. Qc8) 6. axb3 cxb3 7. Nxb3 Kc4 8. Nc1 b5 9. h6 b4 10. h7 b3 11. h8=Q) 3. Kf6 $3 b5 $1 (3... c2 4. Ke5 Kg7 5. Kd4 b5 6. Ke3 $1 Kg6 7. Kd2 Kg5 8. Kxc2 Kg4 9. Kd2 Kh3 10. Ke3 Kxh2 11. Kd4 {win}) (3... Kg8 4. Ke5 Kg7 5. Kd4 b5 6. Kc5 b3 7. axb3 cxb3 8. Nxb3 Kg6 9. Nd4 Kg5 10. Kb4 Kg4 11. Kxc3 Kh3 12. Nf3 {win}) 4. h3 $1 ({First logical try} 4. h4 $2 Kg8 5. Kg6 Kh8 6. h5 Kg8 7. h6 Kh8 8. h7 c2 9. Kh6 b3 10. axb3 cxb3 11. Nxb3 b4 12. Kg6 c1=Q 13. Nxc1 b3 14. Nd3 b2 15. Nxb2 {pat.} (15. Ne5 $3 b1=Q+)) ({Second logical try} 4. Kg6 $2 Ke7 $1 5. h3 (5. h4 Kf8 $1 $11) 5... Ke6 6. h4 Kd5 7. h5 b3 8. axb3 cxb3 9. Nxb3 Kc4 10. Nc1 b4 11. h6 b3 12. h7 b2 $11) 4... Kg8 5. Kg6 Kh8 6. h4 Kg8 7. h5 Kh8 8. h6 Kg8 9. h7+ Kh8 10. Kh6 c2 11. Kg6 b3 12. axb3 cxb3 (12... b4 13. Kh6 cxb3 14. Nxb3 {main line.}) 13. Nxb3 b4 14. Kh6 c1=Q+ 15. Nxc1 b3 16. Nd3 b2 17. Ne5 b1=Q {(without check)} 18. Nf7# 1-0

[Event "The Problemist, 5 hm"] [Site ""] [Date "2011"] [Round ""] [White "E1059 Siegfried Hornecker(Ger"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/7r/8/6P1/3k2P1/3p3n/5RK1/8 w - - 0 1"] [PlyCount "20"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 1. g6 Rh4 $1 (1... Rg7 2. Kxh3 Rxg6 3. Kh4 $11) 2. Rf8 $1 (2. g7 $2 Rxg4+ 3. Kxh3 Rxg7 $19) (2. Rf7 $2 Ng5 {see Rf6?} ({or} 2... Rxg4+)) (2. Rf6 $2 Ng5 ({ not} 2... Ke5 $2 3. Rf5+ Ke4 4. Kg3 d2 5. Kxh4 $1 d1=Q 6. g7 Qd8+ 7. Kxh3 $11) (2... d2 3. Rd6+ Ke3 4. Re6+ Kd3 5. Rd6+ Ke2 6. Re6+ Kd1 7. Rd6 Ng5 $1 8. Kg3 Rh8 {wins too}) 3. Rf4+ Ke3 4. g7 d2 5. Rf3+ (5. Rd4 Kxd4 ({also} 5... d1=Q) 6. g8=Q Rxg4+ 7. Kh2 Ke3 {win}) 5... Nxf3 6. g8=Q d1=Q 7. Qe6+ Kd2 8. Qd5+ Ke1 9. Qxd1+ Kxd1 10. Kxf3 Ke1 {win}) 2... Rxg4+ 3. Kf3 $1 Rf4+ (3... Rxg6 4. Rd8+ Kc3 5. Rxd3+ Kxd3 $11) ({main line 2} 3... Rg5 4. Rd8+ $1 (4. g7 $2 Ng1+) 4... Kc4 (4... Kc3 5. g7 $1 Rxg7 (5... d2 6. Rc8+ Kd3 7. Rd8+ Kc2 8. Rc8+ Kd1 9. g8=Q $11) 6. Rxd3+ Kxd3 {stalemate.}) 5. g7 $1 Rxg7 6. Rd4+ $1 Kc3 (6... Kxd4) 7. Rxd3+ Kxd3 {stalemate.}) 4. Rxf4+ Nxf4 5. g7 (5. Kxf4 $2 d2 6. g7 d1=Q 7. g8=Q Qf1+ 8. Kg3 Qg1+) 5... d2 6. g8=Q d1=Q+ 7. Kg3 Qg1+ 8. Kh4 $1 Qh2+ (8... Qxg8 { stalemate.}) 9. Kg5 (9. Kg4 Qh3+ 10. Kg5 Qg3+ {main line.}) 9... Qg3+ 10. Kh6 Qxg8 {stalemate.} 1/2-1/2

[Event "The Problemist, 6 hm"] [Site ""] [Date "2010"] [Round ""] [White "E1045 Richard Becker (USA)"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "7k/1rpR4/6P1/1P6/5npK/8/8/8 w - - 0 1"] [PlyCount "16"] [EventDate "2010"] [SourceDate "2005.01.24"] 
 1. b6 $1 (1. Kxg4 $2 Nxg6 2. Kf5 Nf8 {-+}) (1. g7+ $2 Kg8 2. Kxg4 Ne6 3. Re7 Nc5 4. Kf3 (4. Kf5 {(Kf4)} Rxb5 {-+}) (4. Kg3 Na4 5. Kf3 Ra7 6. Kg4 Nc3 7. b6 Ra4+ {-+}) 4... Na4 5. Kg4 (5. Kf4 {(Ke3)} Nc3 {-+}) 5... Nb6 6. Kf5 Nd5 7. Rd7 Rxb5 8. Ke6 c6 {-+}) 1... Rxb6 (1... Nxg6+ 2. Kg3 Rxb6 3. Rxc7 Ne5 (3... Rb4 4. Rc5 Re4 5. Rh5+ Kg7 6. Rg5 {=}) 4. Kf4 Rb5 (4... Re6 5. Ra7 Kg8 6. Rb7 Kf8 7. Kf5 Re7 8. Rb2 Kg7 9. Rg2 Kh6 10. Rh2+ Kg7 11. Rg2 Kf7 12. Ra2 Ke8 13. Rd2 {=}) 5. Ra7 Rc5 6. Rb7 Ra5 7. Rc7 Kg8 8. Rb7 Rc5 9. Ra7 Rb5 10. Rc7 {=}) 2. Rh7+ $1 (2. Rxc7 $2 Rxg6 3. Rc4 (3. Rb7 Rg8 {-+}) 3... Ng2+ 4. Kh5 Ne3 5. Re4 Kg7 6. Rxe3 g3 7. Re1 g2 8. Rg1 Kf6 9. Kh4 Kf5 10. Kh3 Kf4 11. Rxg2 Rh6#) (2. g7+ $2 Kg8 3. Rxc7 Rg6 4. Rc4 Ng2+ 5. Kg3 Ne3 6. Re4 Kxg7 {etc.}) 2... Kg8 3. Rxc7 Rxg6 4. Rd7 $1 {zz} (4. Rb7 $2 Nd3 5. Kg3 Ne5 {-+}) 4... Ne6 ({main line 2} 4... Kh8 5. Rd4 $1 g3 6. Rd8+ Kg7 7. Rg8+ Kxg8 {stalemate.}) (4... g3 5. Rg7+ Rxg7 {stalemate.}) (4... Kf8 5. Rd4 g3 6. Rxf4+ Kg7 7. Rf1 g2 8. Rg1 Kf6 9. Kh3 $11) (4... Ne2 {(Ng2+)} 5. Kh5 Nf4+ 6. Kh4 Ne6 7. Rd2 $1 Nf4 8. Rd7 $1 (8. Rd4 $2 g3 9. Rd8+ Kf7 10. Rd7+ Kf6 11. Rd6+ Ne6 {-+})) 5. Rd2 $1 g3 (5... Nc5 6. Rg2 Ne4 7. Rxg4 $11) 6. Rg2 Nd4 7. Rxg3 Nf5+ 8. Kh5 Rxg3 {stalemate.} 1/2-1/2

[Event "The Problemist January"] [Site ""] [Date "2010"] [Round ""] [White "E1026 Nikolay Rokirovkin (Ukr"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1n6/p2k3p/3p4/1p1Pp2p/1P2Pp1P/1Q3PpK/6P1/5q2 w - - 0 1"] [PlyCount "37"] [EventDate "2010"] [SourceDate "2005.01.24"] 
 1. Qb1 $1 (1. Qd1 $2 Qc4 2. Qa1 Ke8 $1 3. Qa6 Qc1 {win.}) 1... Qc4 (1... Qxb1 { stalemate.}) 2. Qa2 $1 Qc8 (2... Ke8 3. Qxc4 bxc4 4. b5 $11) 3. Qa6 $1 ({ Logical try} 3. Qc2 $2 Nc6 4. Qxc6+ Qxc6 5. dxc6+ Kc8 $1 {zz} 6. c7 d5 7. exd5 Kxc7 8. d6+ Kd8 $1 9. d7 e4 10. fxe4 Kxd7 11. e5 Ke7 $1 12. e6 f3 13. gxf3 Kxe6 14. Kxg3 Ke5 $1 {zz} (14... Kf5 $2 15. Kg2 $1 Ke5 16. Kg3 $1 $11 {zz}) (14... Kd5 $2 15. Kf4 Kc4 16. Ke5 Kxb4 17. f4 Ka4 18. f5 b4 19. Kd4 b3 20. Kc3 Ka3 21. f6 $11)) 3... Nc6 4. Qxc8+ $1 (4. Qb7+ Kd8+ 5. Qxc8+ {waste of time}) 4... Kxc8 5. dxc6 {zz} h6 6. c7 d5 7. exd5 Kxc7 8. d6+ Kd8 $1 9. d7 e4 10. fxe4 Kxd7 11. e5 Ke7 $1 12. e6 f3 13. gxf3 Kxe6 14. Kxg3 Ke5 {Not zz because Black played h6. } 15. Kf2 $1 Kd4 (15... Kf4 16. Kg2 Ke3 17. Kg3 Kd4 18. Kf4 Kc4 19. Ke5 $11) 16. f4 Ke4 17. Kg3 a6 18. f5 $1 Kxf5 19. Kf3 $1 {zz} 1/2-1/2

[Event "The Problemist July"] [Site ""] [Date "2010"] [Round ""] [White "E1035 Alain Pallier (France)"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "B6k/8/8/8/8/P7/K7/N4r2 w - - 0 1"] [PlyCount "31"] [EventDate "2010"] [SourceDate "2005.01.24"] 
 1. a4 Rf8 $1 2. Bc6 $1 ({Logical try} 2. Bb7 $2 Rf7 $1 3. Bd5 Rd7 4. Bc6 Rc7 5. Bb5 Kg7 6. Kb3 Kf6 7. Kb4 Ke5 8. Ka5 Kd6 9. Kb6 Rc8 10. Nb3 Rb8+ 11. Ka7 Rh8 12. Na5 Kc5 13. Nb7+ Kb4 14. Bc6 Rh6 $11) 2... Rc8 (2... Rf6 3. Bd7 Rf7 4. Bb5 Kg7 5. Kb3 {main line}) 3. Bg2 $1 (3. Bd5 Rd8) (3. Bh1 $2 Rc4 4. Kb3 Rc1 $11) 3... Rg8 4. Bh1 $1 Rg4 5. Bc6 $1 Rg6 (5... Kg7 6. Nb3 Kf6 7. a5 Rc4 8. Bb5 Rc2+ 9. Ka3 Ke5 10. a6 Kd6 11. Bd3 $1) 6. Bd7 $1 ({Logical try} 6. Bb5 $2 Kg7 7. Kb3 Kf7 8. Kb4 Ke7 9. Kc5 Kd8 {draws.}) 6... Rg7 7. Bb5 $1 Kg8 8. Kb3 Kf7 9. Kb4 $1 (9. Kc4 $2 Rg5 $1 10. Nb3 Ke7 11. Nc5 Rg6 12. a5 Kd6 {(8) draws.}) 9... Ke7 ( 9... Rg5 10. Ka5) 10. Kc5 Kd8 11. Kb6 Kc8 12. Nb3 $1 ({Logical try} 12. Nc2 $2 Rb7+ $1 13. Ka6 Kc7 14. Nb4 Rb6+ 15. Ka7 Rb7+ {positional draw.}) 12... Rb7+ 13. Ka6 Kc7 14. Nc5 $1 Rb6+ 15. Ka7 {win because Black b7 is under control.} Rb7+ 16. Nxb7 1-0

[Event "The Problemist January"] [Site ""] [Date "2011"] [Round ""] [White "E1048 Iuri Akobia (Georgia)"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/5K2/5R2/1pb1Pn2/4k3/1p6/1P6/8 w - - 0 1"] [PlyCount "45"] [EventDate "2010"] [SourceDate "2005.01.24"] 
 1. e6 (1. Ke6 $2 Nd4+ 2. Kd7 Kxe5 $19) 1... Nd6+ 2. Kg6 $1 (2. Kg8 $2 Nc4) 2... Bd4 (2... Nc4 3. Rf1 Nxb2 4. Rf5 $1 Be7 5. Rxb5) 3. Rf1 $1 ({try} 3. Rf8 $5 Bxb2 4. e7 Be5 $1 ({not} 4... Ba3 $2 5. Rd8 b2 6. Rxd6 b1=Q 7. Rd1 $1 (7. e8=Q+ $2 Kf4+) 7... Qxd1 8. e8=Q+ Kf4 9. Qxb5) ({not} 4... Bc3 $2 5. Rd8 b2 6. Rxd6 b1=Q 7. e8=Q+ $1 (7. Rd1 $2 Qxd1 8. e8=Q+ Be5 9. Qxb5 Qg4+ 10. Kf7 Qh5+) 7... Kf4+ 8. Kh6 $1 $11) 5. Rd8 b2 $19) 3... Bxb2 4. Rb1 Bc3 $1 (4... Bd4 5. Rxb3 Kd5 6. e7 $11) 5. Rxb3 b4 6. e7 Kd5 $1 {(Reti's manoeure)} 7. Kg5 $1 {zz} Kc4 $1 (7... Ke6 8. Kf4 Kxe7 9. Ke3 Nb5 10. Kd3 $11) (7... Ke5 $5 8. Kg4 $1 Ke4 9. Rb1 $1 (9. Kg5 $2 Kd5 {zz} 10. Kf4 (10. Rb1 Ke6) (10. Kg4 Kc4 11. Rb1 b3 12. Rd1 Bd4 13. Rc1+ Kb5 $1 14. Rd1 b2 15. Rxd4 b1=Q) 10... Kc4 11. Rb1 b3 12. Rd1 Bd4 13. Rc1+ Kd3 $1 14. Rd1+ Kc3 15. Rc1+ Kd2 16. Rc6 Ne8 17. Rc8 b2 18. Rxe8 b1=Q 19. Rd8 Qf1+ 20. Ke4 Qe2+ 21. Kxd4 Qxe7)) 8. Rb1 b3 9. Rd1 Bd4 $1 (9... b2 10. Rxd6 $11) 10. Rc1+ Kd3 $1 (10... Kd5 11. Rc8 b2 12. Rd8 Ke6 13. e8=Q+) ( 10... Kb5 11. Rd1 Kc5 12. Rc1+ Kb5 13. Rd1 {positional draw.}) 11. Rd1+ $1 ({ Logical try} 11. Rc6 $2 Ne8 12. Rc8 b2 13. Rxe8 b1=Q 14. Rd8 {(compare with the move 16 in main line)} Qg1+ 15. Kf5 Qf2+ 16. Ke6 Qf6+ 17. Kd7 Qg7 18. Kd6 Qe5+ 19. Kd7 Qb5+ 20. Kd6 Be5+ $1 21. Ke6+ Ke4 22. e8=Q Qb6+ 23. Kf7 Qf6+) 11... Kc3 12. Rc1+ {(White force bK to block the square d2.} Kd2 13. Rc6 $1 ( 13. Rc4 $2 Kd3 14. Rc6 Ne8 {leads back to the logical try}) 13... Ne8 14. Rc8 b2 15. Rxe8 $1 b1=Q 16. Rd8 {(compare with the move 14 of the logical try)} Qg1+ (16... Qb5+ 17. Kh4 $1) 17. Kf5 $1 Qf2+ 18. Ke6 Qf6+ 19. Kd7 {draw.} Qf5+ 20. Kd6 Qc5+ 21. Kd7 Qb5+ 22. Kd6 Be5+ 23. Ke6+ 1/2-1/2

[Event "The Problemist September"] [Site ""] [Date "2011"] [Round ""] [White "E1064 Sergiy Didukh (Ukraine)"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "5k2/2p2p2/8/3PK3/8/1P6/3P4/8 w - - 0 1"] [PlyCount "23"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 1. d6 $1 ({Logical try} 1. Kf6 $2 Ke8 2. d6 (2. b4 Kd7 3. Kxf7 Kd6 4. Ke8 Kxd5 5. Kd7 Kc4 6. Kxc7 Kxb4 7. d4 Kc4 $11) 2... c6 $1 {zz} 3. d3 Kd8 $1 4. Kxf7 Kd7 {zz} 5. Kf6 (5. Kf8 Ke6 $1 6. Ke8 Kxd6 7. b4 (7. Kd8 c5 8. Kc8 Kc6 $11) 7... c5 8. b5 Kc7 $11) 5... Kxd6 6. b4 Kc7 7. Ke6 Kb6 8. Kd6 Kb5 9. d4 Kb6 $1 $11 10. Ke7 Ka7 11. Ke6 Ka6 12. Kd7 Kb7 13. Kd6 Kb6 $11) (1. d3 $2 Ke8 2. d6 c6 $1 3. Kf6 {zz} Kd8 $1 4. Kxf7 Kd7 {zz}) 1... c6 $1 2. Kf5 $1 (2. d4 $2 Ke8 3. b4 (3. d5 c5 $1) 3... Kd7 4. d5 f6+ $1 $11) (2. d7 $2 Ke7 3. d8=Q+ Kxd8 4. Kd6 f5 5. Ke5 Kd7 $11) (2. Kd4 $2 Ke8 3. Kc5 Kd7 4. d4 f5 5. d5 cxd5 6. Kxd5 f4 $11) 2... Ke8 3. Kf6 $1 {zz} Kd7 4. Kxf7 Kxd6 5. Ke8 $1 c5 6. Kd8 $1 (6. Kf7 $2 Kd5 7. Ke7 c4 $1 8. b4 Kc6 $11) 6... Kc6 7. Ke7 $1 Kb5 8. d3 $1 (8. Kd6 $2 c4) 8... Ka6 $5 9. Ke6 $1 {zz} Ka5 10. Kd7 (10. Kd6 $2 Kb6 $11) 10... Kb5 11. Kc7 $1 Ka5 12. Kc6 1-0