www.arves.org - Ceskoslovensky sach 1997-1998

Studies awarded in the Ceskoslovensky sach Magazine tournament 1997-1998.

[Event "Cs. sach_08/97 No._59_1.Pr"] [Site ""] [Date "1997"] [Round ""] [White "Lerch, J."] [Black "[+0401.01c4d1]"] [Result "1-0"] [SetUp "1"] [FEN "4r3/8/3p4/1R6/2KN4/8/8/3k4 w - - 0 1"] [PlyCount "17"] [EventDate "1997"] 
 1. Kd3 Rc8 (1... Ke1 $146 2. Rf5 Kd1 {The very interesting twin compare to main line. The attacing method is different.} 3. Rf1+ $1 (3. Rf7 { In this line the tempo plan fails.} 3... d5 4. Rf6 { The tempo idea from main line.} 4... Re4 5. Rf8 Re7 6. Ra8 (6. Rf1+ { It is late return to correct plan.} 6... Re1 7. Rf2 Re8 8. Nf3 Kc1 9. Rc2+ Kb1 10. Nd2+ Ka1 {and there is not the winning Ne4 move.}) 6... Ke1 7. Ra1+ Kf2 8. Ra2+ Kg1 {and the king is in this corner safe.}) 3... Re1 4. Rf2 Re8 (4... Rh1 5. Rd2+ Ke1 6. Nc2+ Kf1 7. Ne3+ Ke1 8. Re2#) 5. Nf3 $1 Kc1 6. Rc2+ Kb1 (6... Kd1 7. Rd2+ Kc1 8. Nd4 Kb1 9. Nb5) 7. Nd2+ Ka1 8. Ne4 $1 Rh8 9. Nc3) 2. Rb7 $1 {The tempo move.  Importatnt is also the free 7th rank - 2.Ke1 Rf7.} (2. Rb6 Ke1) (2. Rb1+ $146 Rc1 3. Rb2 (3. Rb8 Ke1 4. Rf8 Rd1+ 5. Ke3 Rc1) 3... Ke1 4. Rh2 Rc8 5. Nc2+ Kf1 6. Ne3+ Kg1 7. Rg2+ Kh1) 2... d5 3. Rb6 $1 { The same picture.} 3... Rc4 {The toughest defence, finally the rook will be forced occupy the fatal c7 square.} 4. Rb8 $1 Rc7 (4... Rc5 5. Rf8 Kc1 6. Nb3+) 5. Rh8 {or g8.} (5. Rf8 $2 Re7) 5... Kc1 $1 (5... Re7 6. Nf5 Re6 7. Rh1+ Re1 8. Ne3+) 6. Rh1+ Kb2 7. Rh2+ Kc1 (7... Ka3 8. Nb5+) (7... Ka1 8. Nb5 Rg7 9. Nc3 ( 9. Kd4 Rg2)) 8. Rd2 Kb1 9. Nb5 {Solution in 12/97.} 1-0

[Event "Cs. sach_06/98 No._52_3.Pr"] [Site ""] [Date "1998"] [Round ""] [White "Hlinka, M."] [Black "[+0123.25f8g6]"] [Result "1-0"] [SetUp "1"] [FEN "5K2/4pn2/p5k1/P5p1/3p2P1/2R5/p7/3B2B1 b - - 0 1"] [PlyCount "24"] [EventDate "1998"] 
 1... a1=Q {the only good try} (1... dxc3 $2 2. Bd4 {with the mate threat} 2... e5 (2... a1=Q 3. Bc2+ Kh6 4. Bg7#) (2... a1=N 3. Bxc3) 3. Bxc3 Kf6 4. Bb3 Nh6 5. Bxa2 Nxg4 6. Bc4 Ne3 7. Bxa6 Nd5 8. Be1) 2. Bc2+ d3 $1 { The multipurpose move.} (2... Kf6 3. Bxd4+ Ne5 { White has two way to win in this position, compare to main line!} 4. Rf3+ (4. Rc6+ e6 5. Rxe6+ Kxe6 6. Bxa1 Nxg4 7. Bd3 Ne5 8. Bxa6 Nc6 9. Bc8+) 4... Ke6 5. Bxa1 Nxf3 6. Bd3) 3. Bxd3+ (3. Rc6+ Nd6 4. Bxd3+ Kf6) (3. Bd4 Qxc3 4. Bxc3 dxc2 5. Bb2 e5) 3... Kf6 (3... Kh6 4. Bd4 {and mate.}) 4. Bd4+ (4. Rc6+ Nd6) 4... Ne5 $1 {A stalemate defence, other moves are hopeless} (4... e5 5. Rc6+) (4... Ke6 5. Rc6+ Kd7 6. Bxa1 Kxc6 7. Kxf7) 5. Rc6+ (5. Bf5 Qh1 $1) (5. Be4 Qxa5) 5... e6 6. Bc4 $3 {The top moment!} (6. Bxa1 {Pin-stalemate 1.}) (6. Rxe6+ Kxe6 {The bishop d3 hangs!} 7. Bf5+ Kf6 8. Bxa1 {Pin-stalemate 2.}) (6. Bf5 Qa3+ 7. Kg8 Qf8+ $1 (7... Qe7 8. Bxe5+ Kxe5 9. Rxe6+ Qxe6+ 10. Bxe6 Kxe6 11. Kg7) 8. Kxf8 {Pin-stalemate 3.}) 6... Qa3+ 7. Kg8 Qe7 8. Bxe5+ $1 Kxe5 9. Rxe6+ Qxe6+ 10. Bxe6 Kxe6 11. Kg7 (11. Kh7 Kf7 12. Kh6 Kf6 13. Kh5 Kf7 14. Kxg5 Kg7 15. Kf5 Kf7 16. Ke5 Kg6 17. Kd5 Kg5 18. Kc6 Kxg4 19. Kb6 Kf5 20. Kxa6 Ke6 21. Kb7) 11... Ke5 12. Kg6 Kf4 13. Kh5 1-0

[Event "Cs. sach_12/98 No._92_4.Pr"] [Site ""] [Date "1998"] [Round ""] [White "Polásek, J."] [Black "[+0430.32e1g8]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "6k1/8/8/1b1R2r1/ppP5/8/PP6/4K3 b - - 0 1"] [PlyCount "22"] [EventDate "1998"] 
 1... Rg1+ {Searching for a lost tempo, see the line 1..Rxd5.} (1... Rxd5 2. cxd5 Kf7 (2... a3 3. bxa3 bxa3 4. Kd2 Bc4 5. Kc3 Bxa2 6. Kb4) (2... Bc4 { transposition only}) 3. Kd2 Bc4 {else Kc2-b1} 4. a3 Bxd5 { in the other line Ke7 has bB only the bad square a2:} (4... Ke7 5. Kc2 Ba2 6. b3 $3 axb3+ 7. Kb2 {positional draw 1}) 5. axb4 Ke6 6. Kc3 Kd6 7. b5 { and now 2 important different positional draws: } 7... Kc7 (7... Kc5 8. Kc2 $1 Be4+ 9. Kc3 Bd5 {quarding b3,} (9... Kxb5 10. b4 a3 11. Kb3) 10. Kc2 Ba2 11. b4+ $3 {check!} 11... axb3+ 12. Kb2 {positional draw}) 8. Kb4 Bb3 9. Ka5 Kb7 10. b6 Bd1 11. Kb5 {positional draw}) 2. Kf2 Rf1+ 3. Kxf1 (3. Kg2 Bxc4 4. Rd4 Rc1 5. b3 Bxb3 6. axb3 Rc2+ 7. Kf1 axb3 8. Rxb4 b2) 3... Bxc4+ 4. Rd3 $3 (4. Ke1 $6 Bxd5 5. a3 Kf7 6. Kd2 Ke6 {The point, Black has win a move} 7. axb4 Kd6 8. Kc2 Ba2 $1 9. b5 Kc7 $1 (9... Kc5 10. b4+) 10. b3 a3 11. Kc3 Bb1 12. b4 Ba2) 4... Bxd3+ 5. Ke1 $1 (5. Kf2 { With the centralization idea, but this plan is insufficient.} 5... Kf7 6. Ke3 Bc4 7. a3 Ke6 8. Kd4 Bb3 9. axb4 (9. Kc5 bxa3 10. bxa3 Ke5) 9... Kd6 10. b5 Bd1 11. Kc4 Kc7 12. Kc5 Kb7 13. b6 Ka6 14. Kc6 Bf3+ 15. Kc5 Ka5 16. Kc4 Kxb6 17. Kb4 Bd1 18. Ka3 Bb3 19. Kb4 Kc6 20. Kc3 Kc5 21. Kd2 Kc4 22. Kc1 Ba2 23. b3+ Kxb3) 5... Kf7 6. Kd2 Bc4 (6... Bg6 { Interesting try, but the bishop will in future return on the a2-g8 diagonal.} 7. a3 Ke6 8. axb4 Kd6 9. b5 {with two known draws:} (9. Kc3 { also possible waz to draw} 9... Bf7 10. b5 Kc5 (10... Kc7 11. Kb4 Bb3 12. Ka5 Kb7 13. b6 Bd1 14. Kb5 Bc2 15. Ka5) 11. Kc2 Bg6+ 12. Kc3 Bf7 13. Kc2 Ba2 14. b4+) 9... Kc5 (9... Kc7 10. Kc3 Bf7 11. Kb4 Bb3 12. Ka5) 10. Kc3 Bf7 11. Kc2 Ba2 12. b4+) 7. a3 Ke6 8. Kc2 (8. Kc1 $2 Ba2 9. Kc2 Kd5 10. b3 bxa3 11. bxa4 Kc4) 8... Ba2 9. b3 $3 {A nice picture, a4-a3 is now impossible.} 9... axb3+ ( 9... bxa3 10. bxa4 Kd5 11. a5 Kc5 12. a6 Kb6 13. Kc3 Bf7 14. Kc2 Ba2 15. Kc3) 10. Kb2 bxa3+ 11. Kxa3 Kd5 12. Kb2 1/2-1/2

[Event "Cs. sach_11/97 No._82_3.hm"] [Site ""] [Date "1997"] [Round ""] [White "Kondratev, MichejevVS"] [Black "[+4534.02a4h2]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "1r6/5pb1/2Rn4/Q7/K7/5q2/Rp5k/3N4 w - - 0 1"] [PlyCount "28"] [EventDate "1997"] 
 1. Rc2+ $1 (1. Nxb2 Qb3#) (1. Rxb2+ Rxb2 2. Nxb2 Qxc6+) (1. Qd2+ Kh3 2. Nf2+ ( 2. Ra3 Ra8+) 2... Kh4 3. Qc2 Ra8+ 4. Kb4 b1=Q+ 5. Qxb1 Rb8+) 1... Kh3 { else check by queen} 2. Ra3 (2. Raxb2 Bxb2 3. Rxb2 Qxd1+) 2... Qxa3+ (2... Kg4 3. Rxf3 b1=Q 4. Rg3+ Kxg3 5. Qg5+ Kf3 6. Qe3+ Kg4 7. Rg2+) 3. Kxa3 Nb5+ $3 { the only chance to win} (3... Nc4+ $2 4. Rxc4 Bf8+ 5. Ka4) (3... b1=Q $2 4. Qh5+ Kg3 5. Qg5+ Kf3 6. Qe3+ Kg4 7. Rg2+ Kf5 8. Rg5+ Kf6 9. Qe5#) (3... Rb5 $2 4. Nf2+ Kg3 5. Nh1+ Kf3 6. Rf2+ Ke4 7. Ng3+) (3... b1=N+ $2 4. Ka2) 4. Ka2 { Draw?} (4. Ka4 b1=Q 5. Rh2+ Kxh2 6. Qd2+ Kh3 7. Qe3+ (7. Nf2+ Kg3 8. Qg5+ Kxf2 9. Qf4+ Ke2) 7... Kg4 8. Nf2+ Kf5 9. Qf3+ Kg6 10. Qg3+ Kh7 11. Qh2+ Bh6) 4... b1=Q+ $3 5. Kxb1 Nc3+ 6. Kc1 Rb1+ 7. Kd2 Rxd1+ 8. Ke3 Bd4+ 9. Kf4 Rf1+ 10. Kg5 Be3+ 11. Kh5 Ne4 {The threat is Ng3.} 12. Rh2+ $3 Kxh2 13. Qe5+ (13. Qc7+ Rf4 14. Qc2+ Nd2) 13... Ng3+ (13... Rf4 14. Qxe4 (14. Qb2+ Kh3) 14... Rxe4 { stalemate No. 1}) 14. Qxg3+ Kxg3 {stalemate No. 2. Solution in 06/97.} 1/2-1/2

[Event "Cs. sach_03/98 No._24_4.hm"] [Site ""] [Date "1998"] [Round ""] [White "PolásekTazberikHlinka, JJM."] [Black "[+0564.12f4a5]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "2N5/3R2pb/2n1r3/k6P/p1Rb1K2/8/8/8 w - - 0 1"] [PlyCount "21"] [EventDate "1998"] 
 1. Rd5+ Ka6 2. Rxa4+ (2. Rcxd4 $2 Nxd4 3. Rxd4 Bc2 4. Rd7 Rc6 5. Ne7 Rc4+ 6. Ke3 a3) 2... Kb7 { The dangerous pawn is killed, but White has problem with knight.} 3. Nd6+ $1 ( 3. Raxd4 Nxd4 4. Nd6+ Kc7 5. Rxd4 Rxd6 6. Ra4 Kd8 7. Kg5 Rd5+ 8. Kh4 Ke7 9. h6 g6 10. Ra7+ Rd7) 3... Rxd6 $1 (3... Kb6 4. Raxd4 Nxd4 5. Nc4+ Kc6 6. Rxd4 Kc5 7. Rd7) 4. Raxd4 $3 (4. Rxd6 Be5+) 4... Rf6+ $1 (4... Nxd4 5. Rxd6 Ne2+ 6. Ke3 Ng3 7. Rd7+) 5. Kg5 Nxd4 6. Rd7+ Kc6 7. Rxg7 Rf5+ 8. Kh6 (8. Kg4 Rf4+) 8... Ne6 9. Rf7 $3 (9. Rxh7 Rf6#) 9... Nf8 10. Kg7 (10. Rxf8 $2 Rxf8 11. Kxh7 Kd6 12. h6 (12. Kg7 Ke7 (12... Rf1 13. h6 Ke7 14. h7 Rg1+ 15. Kh8)) 12... Ke7 13. Kg7 Rf7+ 14. Kg6 Rf1 15. h7 Rg1+ 16. Kf5 Rh1 17. Kg6 Kf8) 10... Ne6+ (10... Rxf7+ 11. Kxf7 Nd7 12. Kg7 $1 (12. h6 Kd6 13. Kg7 Ke7) 12... Be4 13. h6 Nc5 14. h7 Ne6+ 15. Kf6) 11. Kh6 1/2-1/2

[Event "Cs. sach_10/97 No._73_5.hm"] [Site ""] [Date "1997"] [Round ""] [White "Hlinka, M."] [Black "[+0403.42g4d8]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "3k4/6p1/8/3P3P/5RK1/3P2P1/4p3/4n1r1 w - - 0 1"] [PlyCount "25"] [EventDate "1997"] 
 1. Re4 Rg2 $1 {The endgame without Pe2 gives Black no real  change.} (1... Nxd3 2. Rxe2 Kd7 3. Re6 Nc5 4. Rg6) 2. Kh3 Rf2 { The most quick way to kill Whites tempo moves.} (2... Kd7 3. Re6 (3. d4 Kd6 4. Re5 Rf2 5. g4 Rg2) 3... Rf2 4. g4 Rg2 (4... Rf3+ $1 { the very interesting but unsufficient  move in correct form, see later.}) 5. d4 {with main line}) 3. g4 {else Nxd3} 3... Rg2 {The top of  Black's strategy. White has lost one tempo g4 and  in addition is to move.} 4. Re6 { d4 is too early and other rook-moves are bad:} (4. d4 $2 Kc7 $1 5. Re6 (5. g5 Rxg5 6. Rxe2 Nf3) 5... Kd7 {vzajemny zugzwang} 6. Re4 Kd6 7. Re5 Rf2 8. Kg3 (8. Kh4 $5 Nf3+ 9. Kg3 Nxd4 10. Kxf2 Kxe5 11. g5 Nf3 12. Kxe2 Nxg5 13. Ke3 Ne4 14. Kf3 Nf6) 8... Nd3 {vzajemny zugzwang} 9. g5 Rh2 $1 10. Re8 Rxh5 11. Rxe2 Rxg5+) (4. Re3 $2 Nc2 5. Kxg2 Nxe3+ 6. Kf2 Nxg4+ 7. Kxe2 Nf6) (4. Re5 $2 Nxd3 5. Kxg2 Nxe5 6. Kf2 Nxg4+ 7. Kxe2 Nf6) 4... Kd7 (4... Kc7 $5 5. Rc6+ $1 Kd7 6. Re6 Rf2 $5 (6... Kd8 7. Rd6+) 7. Kg3 (7. Kh4 $5 {so if Black needs this line, better is  2..Kd7 3. Re6 Rf2 4.g4 Vf3+, see comment to 2...Kd7}) 7... Nxd3 (7... Rf3+ 8. Kh2 Nxd3 9. Rxe2 Nf4 $1 10. Re5 $1 Rh3+ 11. Kg1 Rg3+ (11... Rh4 $5 12. Re4 ( 12. Kf2 Nd3+ 13. Kg3 Nxe5 $1 14. Kxh4 Nf7 15. g5 Kd6 16. h6 g6 17. Kg4 Kxd5) ( 12. Rf5 $3 Rxg4+ 13. Kf2 Nh3+ (13... Nd3+ 14. Kf3 Rg1 15. Ke3 Rg3+ (15... Nc5 16. Kf2 Rg4 (16... Rg5 17. Rxg5 Ne4+ 18. Kf3 Nxg5+ 19. Kf4 Nh7 20. Kf5 Nf8 21. Kg5 Kd6 22. h6 g6 23. h7) 17. Kf3 Re4 18. d6 Rc4 19. Rf7+) 16. Ke4 Nc5+ (16... Ke7 17. d6+ Kxd6 18. Rd5+ Ke6 19. Rxd3 Rxd3 20. Kxd3 Kf5 21. h6) 17. Kf4 Rg1 18. Rg5 Nd3+ 19. Kf5 Rxg5+ 20. Kxg5 Ne5 21. Kf5 Kd6 22. Ke4 Nf7 23. Kf5 Nh8 24. Ke4 Ke7 25. Ke5 Nf7+ 26. Kf5 Nh6+ 27. Kg6 Kf8 28. d6 Nf7 29. d7 Ne5+ 30. Kf5 Nxd7 31. h6) 14. Kf3 Rg1 (14... Rg5 $2 15. Rxg5 Nxg5+ 16. Kf4 Nf7 (16... Nh7 17. Kf5 Nf8 18. Kg5 Kd6 19. h6 g6 20. h7) 17. Kf5 Nh8 (17... Ke7 18. Kg6 Kf8 19. d6 Kg8 20. d7 Ne5+ 21. Kg5 Nxd7 22. h6) 18. Ke5) 15. Ke3 Ke7 16. h6 Rg3+ 17. Kd4 gxh6 18. Rh5) 12... Nxh5 (12... Rxg4+ 13. Kf2 $13) 13. Ra4 Kc8 $1 14. Rc4+ Kd8 15. Kf2 Nf6 16. Kg3 g5) 12. Kf2 Rxg4 13. Kf3 Nd3 14. Kxg4 Nxe5+ 15. Kf5 Kd6 16. Ke4) 8. Re4 $1 Kd6 9. Re3 $1 {somethig like mutual zugzwang.} 9... Rf1 $1 {teh best try.} 10. Rxe2 Rg1+ 11. Rg2 $1 (11. Kh4 Ne5 12. Re4 Nf3+ 13. Kh3 Ng5+ 14. Kh2 Nxe4 15. Kxg1 Nf6) (11. Kf3 Ne5+ 12. Kf4 Rxg4+ 13. Kf5 Rh4 14. Kg5 Rh1 15. Ra2 Kxd5 16. Ra5+ Ke6 17. Ra6+ Kf7 18. Ra7+ Kg8 19. Ra8+ Kh7) 11... Rxg2+ 12. Kxg2 Kxd5 (12... Ne5 13. Kg3 Nf7 14. Kf4 Kxd5 15. Kf5) 13. Kf3 $2 ( 13. Kg3 $1 Ke6 (13... Ke5 14. g5) 14. h6 $3 {the study in study!} (14. Kh4 Kf6 15. g5+ Kf7 16. h6 g6 17. Kg4 Ne5+ 18. Kf4 Ke6 19. h7 Nf7) (14. g5 Ne5 15. Kf4 Nf7) 14... gxh6 15. Kh4 Nf4 (15... Kf6 16. Kh5 Kg7 17. g5) (15... Ne5 16. g5 Nf3+ 17. Kh5 hxg5 18. Kg4) 16. g5 h5 17. g6 Kf6 18. g7 Kxg7 19. Kg5) 13... Ke6 14. g5 Kf5 15. h6 Ne5+ 16. Kg3 g6 17. h7 Nf7) 5. d4 {mutual zugzwang} 5... Kc7 (5... Rf2 6. Kg3 Nd3 7. Re4 Kd6 8. Re5 {mutual zugzwang}) 6. Rc6+ (6. d6+ $2 Kc6 7. d5+ Kd7 {zugzwang}) (6. Re4 $2 Kd6 7. Re5 Rf2 8. Kg3 Nd3) 6... Kd8 $5 { main line} (6... Kb8 $6 {the another try} 7. Re6 (7. Rb6+ Ka7 8. Re6 Kb7) (7. d6 Nd3 8. d7 Nf4+) 7... Kb7 8. Re7+ $1 Kb6 9. Re6+ Kb7 10. Re7+ Kc8 11. d6 Kd8 12. d5 Rf2 13. Kg3 Nd3 14. Re4 Kd7 15. Re6) 7. Rd6+ Ke7 8. h6 $3 (8. Ra6 Rf2 9. Re6+ Kd8 10. Rd6+ Kc8 11. Re6 Kc7 12. Rc6+ Kd7 13. Re6 Rg2) 8... Kxd6 (8... Rh2+ 9. Kxh2 Nf3+ 10. Kg2 e1=Q 11. Re6+ Qxe6 12. dxe6 Nh4+ 13. Kg3 g5 14. h7 Ng6 15. d5) (8... gxh6 9. Rxh6 Kd8 10. Re6 Kd7 11. g5) 9. hxg7 Nd3 10. Kxg2 ( 10. g8=Q Nf4+ 11. Kh4 e1=Q+) 10... e1=Q 11. g8=Q Qf2+ 12. Kh1 Qf3+ 13. Kh2 { Solution in 06/97.} 1/2-1/2

[Event "Cs. sach_11/97 No._81_sp.hm"] [Site ""] [Date "1997"] [Round ""] [White "Husák, K."] [Black "[+0130.13g5g7]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "7b/6k1/8/5PKp/1R6/4p3/2p5/8 w - - 0 1"] [PlyCount "29"] [EventDate "1997"] 
 { } 1. Rc4 {premature would be cheks in move one:} (1. f6+ Kf7 2. Rb7+ Ke6 3. f7 Bg7 4. Kg6 Bf8 5. Rc7 e2) (1. Rb7+ Kf8 2. Rb8+ Ke7 3. Rc8 e2) 1... e2 2. Rxc2 (2. f6+ $2 Kf7 3. Rxc2 (3. Rc7+ Ke6 4. f7 Bg7 5. Kg6 e1=Q) 3... Bxf6+) (2. Rc7+ Kf8 3. Rxc2 e1=Q 4. Rc8+ Kf7 5. Rxh8 Qg3+) 2... e1=Q 3. f6+ Kf7 4. Rc7+ Kg8 (4... Ke8 5. Re7+) 5. Rc8+ Kh7 6. Rc7+ Bg7 7. Rxg7+ Kh8 8. Kxh5 Qe6 $1 { the other is database-tested} 9. Kg5 $1 (9. Kg6 $2 Qg4+ 10. Kf7 $1 (10. Kh6 Qf5 11. Rf7 (11. Rg6 Qe5 12. f7 Qf4+) 11... Qf4+ 12. Kg6 Qe4+ 13. Kg5 Qe5+ 14. Kh6 Qe3+ 15. Kh5 (15. Kg6 Qe8) 15... Qe8) 10... Qf5 11. Rg8+ $1 (11. Ke7 Qd5 $1 12. f7 (12. Rg4 Qe5+) (12. Kf8 Qe6 13. Rg6 Kh7 14. Rg7+ Kh6 15. Rf7 Qe5 16. Kg8 Qd5 17. Kf8 Qd8#) 12... Qe5+) 11... Kh7 12. Re8 Qh5+ 13. Ke7 Kg6 14. Rg8+ Kf5 15. f7 Qe2+ 16. Kd8 Qd3+ 17. Ke7 Qe4+ 18. Kd8 Qd5+ 19. Ke7 Qe6+ 20. Kf8 Kf6) 9... Qe5+ 10. Kg6 Qe4+ 11. Kg5 $1 Qf3 12. Re7 $1 {and draw, for example} 12... Kg8 13. Rg7+ (13. Re8+ Kf7 14. Re7+ Kf8 15. Rg7) 13... Kf8 14. Re7 Qg3+ 15. Kf5 { Solution in 06/98.  In the same issue 11/97 there are 6 corrections of the czech classic chess studies with 5 pieces.} 1/2-1/2

[Event "Cs. sach_08/98 No._66_5.com"] [Site ""] [Date "1997"] [Round ""] [White "Kondratev, V."] [Black "[+0100.35e4h3]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/1pp5/8/8/Pp2Kp2/pR3P1k/3P4/8 w - - 0 1"] [PlyCount "33"] [EventDate "1997"] 
 1. Rb1 a2 2. Rh1+ Kg2 $1 (2... Kg3 3. Kd4 Kxf3 4. Kc4 c5 5. Ra1) 3. Ra1 b3 4. d4 $1 (4. d3 Kg3 5. Rg1+ Kf2 6. Ra1 Ke2 7. Kd4 Kd2 8. Kc4 Kc2 9. Kb4 (9. d4 Kb2 10. Rd1 Ka3 11. Kb5 c6+ 12. Ka5 b6+ 13. Kxb6 b2 14. Kxc6 b1=Q 15. Rxb1 axb1=Q) 9... Kb2 10. Re1 c5+ 11. Kc4 Ka3) 4... Kg3 $1 {Wins an important tempo.} 5. Rg1+ Kf2 (5... Kh4 6. Kxf4 Kh5 7. Kf5 Kh4 8. Kf4 Kh3 9. Rh1+ Kg2 10. Ra1) 6. Ra1 Ke2 7. d5 $1 Kd2 8. Kd4 Kc2 9. Kc4 Kb2 10. Rd1 Ka3 (10... a1=Q 11. Rxa1 Kxa1 12. Kxb3 Kb1 13. a5 Kc1 14. Kc3) 11. Kb5 $1 (11. d6 b2 12. dxc7 (12. d7 b1=Q 13. Rxb1 axb1=Q 14. d8=Q Qc2+ 15. Kd4 Qd2+) 12... b1=Q) 11... c6+ $1 ( 11... b6 12. a5 bxa5 13. Kxa5 Kb2 14. Kb4) 12. dxc6 (12. Ka5 cxd5 13. Kb5 d4 14. a5 d3 15. Kc4 d2 16. Kc3 b2) 12... bxc6+ 13. Ka5 $1 (13. Kc4 Kxa4 $1 (13... c5 14. Kb5 c4 15. Kxc4 Kxa4 16. Rd8 Ka3 17. Rb8 a1=Q 18. Ra8+ Kb2 19. Rxa1) ( 13... b2 14. Rd3+ Kxa4 15. Rd8 Ka5 16. Kc5 Ka6 17. Kxc6 Ka7 18. Rd7+ Kb8 19. Rd8+ Ka7 20. Rd7+ Ka6 21. Rd8) 14. Rd8 Ka3 15. Rb8 a1=Q 16. Ra8+ Kb2 17. Rxa1 Kxa1 18. Kxb3 Kb1 19. Kc3 Kc1 20. Kd4 Kd2 21. Ke4 c5 22. Kd5 Ke3) 13... c5 ( 13... Kb2 14. Kb4 c5+ 15. Kc4 Ka3 16. Kb5 c4 17. Kxc4) 14. Kb5 c4 15. Kxc4 (15. a5 b2) 15... b2 (15... Kxa4 16. Rd8 Ka3 17. Rb8 a1=Q 18. Ra8+ Kb2 19. Rxa1 Kxa1 20. Kxb3 Kb1 21. Kc3 Kc1 22. Kd3 Kd1 23. Ke4) 16. Rd3+ Kxa4 17. Rd8 1/2-1/2

[Event "Cs. sach_08/98 No._65_7.com"] [Site ""] [Date "1997"] [Round ""] [White "Kondratev, V."] [Black "[+3115.02h5g2]"] [Result "1/2-1/2"] [SetUp "1"] [FEN "2n5/5B2/8/7K/3R4/2p3p1/1N4k1/1N2q3 w - - 0 1"] [PlyCount "31"] [EventDate "1997"] 
 1. Bd5+ Kg1 $1 (1... Kf1 2. Rd1 cxb2 $1 (2... Qxd1+ 3. Nxd1 c2 4. Ne3+) (2... c2 3. Bc4+ Kf2 4. Nd3+) 3. Bg2+ $1 (3. Rxe1+ Kxe1 4. Kg4 Kf2 5. Kf4 (5. Kh3 Ne7 6. Be4 Ng6) 5... Ne7 6. Bb7 Ng6+ 7. Kf5 Nh4+ 8. Kf4 g2 9. Bxg2 Nxg2+ 10. Ke4 Ke2 11. Kd4 Kd1 12. Kc3 Kc1 13. Nd2 Ne1 14. Nb3+ Kb1 15. Nd2+ Ka2) 3... Kf2 4. Rxe1 Kxe1 5. Kg4 Kf2 6. Kh3 Nd6 (6... Ne7 7. Nc3 b1=Q (7... Ng6 8. Nd1+) 8. Nxb1 Ng6 9. Be4) 7. Nc3 Ke1 $1 8. Bd5 $1 (8. Kxg3 Kd2 9. Nb1+ Kc1 10. Na3 Nc4) 8... Kd2 9. Nb1+ Kc2 10. Ba2 Ne4 11. Kg2) 2. Rd1 (2. Nxc3 Qxc3 3. Rd1+ Kf2 4. Nd3+ Ke2 5. Rc1 Qh8+ 6. Kg4 Kxd3) 2... Qxd1+ 3. Nxd1 c2 4. Nbc3 (4. Ndc3 Kf2 5. Ne4+ Ke3) 4... Kh2 (4... g2 5. Bxg2 (5. Ne2+ $2 Kf1 6. Bxg2+ Kxe2 7. Nc3+ Kf2 8. Na2 Kxg2 9. Kg4 Nb6 10. Kf4 Kf2 11. Nc1 Ke1 12. Ke3 Kd1 13. Ne2 Nd5+ 14. Kd3 ) 5... Kh2 6. Bb7 Nd6 (6... c1=Q 7. Bxc8) 7. Ne3 c1=Q 8. Ng4+) 5. Ne3 c1=Q 6. Ng4+ Kh3 7. Ne2 Qf1 8. Bg2+ (8. Bf3 Qxe2 9. Bxe2 g2) 8... Kxg2 9. Ne3+ Kf3 $1 ( 9... Kf2 {in to the future fork} 10. Nxf1 g2 11. Nfg3 Nd6 (11... Kf3 12. Kh4 Nd6 13. Ng1+ Kf2 14. Nh3+ Kf3 15. Ng1+) 12. Nf4 $1 g1=Q 13. Nh3+) 10. Nxf1 g2 11. Nfg3 (11. Ng1+ Kf2 12. Ne3 Kxe3 13. Kg4 Kf2 14. Nh3+ Kf1 15. Kf3 Nd6 $19) 11... Nd6 (11... Ne7 12. Kg5 Nd5 13. Kh4 Nf4 14. Ng1+ Kf2 15. Nf5) 12. Kg5 $1 ( 12. Kh4 Nf5+) (12. Kg6 Ne4 (12... Nc4 13. Nh5 $1) 13. Nh5 Kf2 14. Nhf4) 12... Ne4+ 13. Kh4 $1 Nxg3 14. Ng1+ Kf2 15. Nh3+ Kf3 16. Ng1+ 1/2-1/2