www.arves.org - Gurgenidze-60 JT 2013

Studies awarded for Gurgenidze-60 Jubilee Tournament 2013

[Event "2.p Gurgenidze-60 JT"] [Site ""] [Date "2013"] [Round ""] [White "Bazlov=Y"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/1b2N3/8/R4B1K/8/Nk2r1p1/1r6 w - - 0 0"] [PlyCount "21"] [SourceDate "2005.01.24"] 1. Nc1 $1 Rxc1 (1... g1=Q 2. Ra2+ Kc3 3. Nxe2+ $11) 2. Bxc1+ Kc2 $1 (2... Kxc1 3. Nf4 $11) 3. Rc4+ $1 (3. Rg4 $2 g1=Q {(Re4)} 4. Rxg1 Bxg1 5. Nf4 Re4 6. Kg4 Bc5 {(a7)-+}) 3... Kd1 $1 4. Rg4 $1 (4. Bf4 $2 Rxe6 5. Rc1+ (5. Bh2 Rh6+ $19) 5... Ke2 6. Bh2 Kf3 7. Rc3+ Be3 $19) {main B} 4... Bf2+ $1 {(chacking where will move wK)} ({main A} 4... g1=Q 5. Rxg1+ Bxg1 6. Nf4 Rh2+ 7. Kg3 $1 (7. Nh3 $2 Bf2+ 8. Kg4 Kxc1 $19) 7... Kxc1 8. Nh3 Rh1 9. Kg2 Rh2+ 10. Kg3 {positional draw}) 5. Kh3 $1 (5. Kg5 $2 g1=Q 6. Rxg1+ Bxg1 7. Nf4 Ra2 $1 8. Nd3 Ra5+ 9. Kg4 Kc2 $19) 5... g1=Q 6. Rxg1+ Bxg1 7. Nf4 $1 Re4 (7... Ra2 8. Nd3 $1 Ke2 9. Ne5 $1 $11) 8. Kg4 $1 Kxc1 9. Kf3 Re3+ 10. Kg2 Re4 11. Kf3 {positional draw. Sintes two positional draws which are known from other studies. -- Sintezi ver izebnaba bazashi (iura)} 1/2-1/2

[Event "Sp.p Gurgenidze-60 JT"] [Site ""] [Date "2013"] [Round ""] [White "Bazlov=Y, Kovalenko=V, Pervakov=O"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1rk5/8/PB4P1/K7/5n2/8/8/8 w - - 0 1"] [PlyCount "19"] [SourceDate "2005.01.24"] 1. a7 $1 (1. g7 $2 Kd7 2. Bd4 Nd5 $1 3. Be5 Rg8 4. Kb5 Ke6 5. Bd4 Rb8+ 6. Kc4 Rc8+ 7. Kb5 Kd6 8. a7 Re8 9. Bc5+ Kc7 10. Bf8 Nf6 11. Be7 Ng8 $19) (1. Be3 $2 Nd5 $1 $19) 1... Ra8 2. Ka6 (2. Be3 $2 Nd5 $19) (2. g7 $2 Kb7 $19) 2... Nxg6 3. Bd8 $3 (3. Ba5 $2 Nf8 {-zz (Ne7 also win)} 4. Bb6 Nd7 5. Ba5 Nc5+ 6. Kb6 Na4+ $1 7. Ka6 Nb2 $1 8. Bc3 Nc4 $1 9. Be1 Kc7 $19) 3... Ne5 ({Another interest variant:} 3... Nf8 4. Ba5 $1 {-zz} Ne6 (4... Nd7 5. Bb6 $1 Nf6 (5... Nb8+ 6. Kb5 Nd7 7. Ka6 $1 $11) 6. Bd4 $1 (6. Bf2 $2 Kc7 $1 7. Bg3+ Kc6 $19) 6... Nd7 7. Bb6 $1 Nf6 8. Bd4 Nd5 9. Be5 $1 $11) 5. Kb6 Nc7 6. Be1 $1 (6. Bd2 $2 Nd5+ 7. Kc6 Rxa7 8. Kxd5 Rd7+ $19) 6... Nd5+ 7. Kc6 Ne7+ 8. Kb6 Nd5+ 9. Kc6 $11) 4. Bh4 $1 (4. Bg5 $2 Nc6 $1 5. Be3 Nb4+ 6. Kb5 Nd5 $1 $19) 4... Nc6 (4... Nd7 5. Bg3 $1 Nc5+ 6. Kb6 (6. Kb5 $2 Ne4 $1 $19) 6... Na4+ 7. Ka6 $11) 5. Bf2 $1 (5. Kb6 $2 Kd7 $19) 5... Nxa7 (5... Nb4+ 6. Kb6 $1 $11 (6. Kb5 $2 Nd3 $1 $19)) 6. Kb6 $1 Kb8 7. Bg3+ Kc8 8. Bf2 $1 (8. Be5 $2 Kd7 9. Kb7 Re8 $1 $19) (8. Bf4 $2 Kd7 9. Kb7 Rf8 $1 $19) (8. Bh2 $2 Kd7 9. Kb7 Rh8 $1 $19) 8... Kb8 (8... Kd7 9. Kb7 Rf8 10. Bxa7 $11) 9. Bg3+ Kc8 10. Bf2 {White bishop visited all edges of board (d8, h4 in solution and a5, e1 in variants)! The correction of study Y. Bazlov, V.Kovalenko (1976). The same positional draw we see in the study of Pogosjants and... Gurgenidze (1978)!} 1/2-1/2

[Event "Sp.p Gurgenidze-60 JT"] [Site ""] [Date "2013"] [Round ""] [White "Pervakov=O"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/5N2/n1npK3/1P6/3rP3/8/1k1B4/8 w - - 0 1"] [PlyCount "41"] [SourceDate "2005.01.24"] 1. Bg5 $1 {Attack square e7.} (1. Bh6 $2 Nc5+ 2. Kf5 Ne7+ $1 $19) (1. bxc6 $2 Rxd2 2. Kd7 Nc5+ 3. Ke7 Rc2 $1 4. Nxd6 (4. Ng5 Na6 5. Kxd6 Nb8 6. c7 Rc6+ 7. Kd5 Rxc7 $19) (4. Kxd6 Nxe4+ $19) 4... Nd3 $1 5. Kd7 Ne5+ 6. Ke6 Nxc6 $19) 1... Nc5+ (1... Nc7+ 2. Kd7 Ne5+ 3. Nxe5 Nxb5 4. Nf7 Kb3 5. Kc6 Kc4 6. Be7 Rxe4 7. Nxd6+ $11) 2. Kf5 Ne5 3. Be3 $1 (3. Nxd6 $2 Rxd6 4. Be7 (4. Kxe5 Rd3 5. Be7 Nb7 $19) 4... Rh6 5. Kxe5 (5. Bxc5 Nd7 $19) 5... Rh5+ 6. Kd4 Nd7 7. Bd6 Rxb5 $19) ( 3. Bf6 $2 Kb3 4. b6 Rb4 $19) 3... Rxe4 $1 (3... Rd1 4. Nxe5 Rf1+ 5. Kg6 Nxe4 6. b6 Kc3 (6... dxe5 7. b7 Rf8 8. Ba7 $11) 7. b7 Rb1 8. Bd4+ $1 Kc2 (8... Kxd4 9. Nc6+ $11) 9. Kf5 Ng3+ 10. Ke6 dxe5 11. Bxe5 Rxb7 12. Bxg3 $11) (3... Rd3 4. Nxe5 $1 Rxe3 5. Nc4+ $11) 4. Bxc5 Rc4 $1 (4... dxc5 5. Kxe4 Nxf7 6. Kd5 $11) 5. Ba3+ $3 {Finishing big work! Black king must be on a3!} (5. Nxd6 $6 Rxc5 6. Ne4 Rxb5 $19) 5... Kxa3 6. Nxd6 Rc5 7. Ne4 $1 ({Logical try} 7. Nb7 $6 Rc7 $1 $19) 7... Rxb5 8. Nd6 Rc5 9. Nb7 $1 (9. Ne4 $2 Ra5 $19) 9... Rc7 10. Nd6 $1 {Now this move is possible because square b5 is vacant!} Re7 (10... Nd3 11. Nb5+ $11 ) 11. Nc8 Re8 12. Nd6 Re7 13. Nc8 Rc7 14. Nd6 Rc5 15. Nb7 Rb5 16. Nd6 Ra5 17. Nb7 Ra7 18. Nd6 $1 Ra5 (18... Nd3 19. Nb5+) 19. Nb7 Rd5 20. Ke6 $1 (20. Ke4 $2 Rd7 $19) 20... Rb5 21. Nd6 $11 {Big work of white bishop and knight! Logical sacrifice of white pawn b5. The final position is khown from studies of Hannelius (1953) and Kasparjan (1983), but in these studies black king don't work and no logical sacrifice of pawn.} 1/2-1/2

[Event "cs.sach 2011-12"] [Site ""] [Date "2012"] [Round ""] [White "Polasek -"] [Black ""] [Result "1/2-1/2"] [Annotator "Polasek,Jaroslav"] [SetUp "1"] [FEN "k3B1K1/8/7P/2r5/8/8/8/1n1b4 w - - 0 1"] [PlyCount "31"] [EventDate "2012"] [SourceDate "2005.01.24"] 1. Bg6 $1 (1. h7 $2 Rc8 2. Kf8 Bh5 3. h8=Q Rxe8+) 1... Bb3+ {aktivizuje strelce } (1... Rc8+ 2. Kg7 Rc7+ 3. Kf6 Nc3 4. h7 Nd5+ 5. Ke5 (5. Kg5)) (1... Rg5 2. Kf7 Bb3+ 3. Kf6) 2. Kg7 Rc7+ $1 3. Kf6 $1 (3. Kf8 $2 Rc8+ 4. Kg7 Rg8+ 5. Kf6 Nc3 6. h7 Nd5+ 7. Kg5 Rd8 (7... Rh8 {prekvapive take staci} 8. Kh6 Nf4 9. Be4+ Kb8 10. Kg7 Rd8 11. h8=Q Ne6+ 12. Kh7 Ng5+ 13. Kg7 Rxh8) 8. Kh6 (8. Bf7 Bc2 { a jezdec na d5 je kryty}) (8. Be4 Kb8) 8... Nf6) 3... Nc3 (3... Bg8 4. Bxb1 $11 {pozicni remiza - cerny nemuze pozici zesilit, napr.} Kb7 5. Bg6 Kc6 (5... Kc8 6. Kg5 Kd8 7. Kf6 Rb7 8. Kg5 {a cerny dale nepostoupi}) 6. Kg5 Kd6 7. Kf6 Rb7 ( 7... Re7 8. Kf5 $1) 8. Bh5 $1 ({nebo} 8. Be8) 8... Bh7 9. Bg6 $1 Bg8 10. Bh5 ( 10. Be8) 10... Rh7 11. Bg6 $1 Rxh6 12. Kg7) 4. h7 Nd5+ 5. Kg5 $1 Rc8 6. Bf7 $1 Rh8 7. Kh6 Nf6 8. Bxb3 Rxh7+ 9. Kg6 Rh3 10. Be6 Rf3 11. Bf5 Nd5 12. Be4 Rf6+ 13. Kg5 Rd6 14. Kf5 Kb7 15. Ke5 Kc6 16. Kd4 1/2-1/2