hms123: <ray keene>
After <27....g6>
 click for larger viewHoudini likes <28.Rxb7> for White. Raymond Keene - Efim Geller, Teesside 1975
Analysis by Houdini 1.5a x64: 20 ply
1. (5.47): 28.Rxb7 Rc7 29.Re8+ Kg7 30.Ra8 Rxb7 31.Rxa5 Nxa5 32.Bxb7 Nxb7 33.Nxa4 Bxb2 34.Nxb2 Kf6 35.a4 Ke7 36.Kg2 Kd7 37.Kf3 Kd6 38.Nc4+ Kc5 39.b6 Kb4 40.a5 Kb5 41.Ke4 Nc5+ 42.Kd4 h6 43.h4 Nb7 2. (2.72): 28.Rf1 Qd8 29.Rff7 Qg8 30.Rxb7 Rd8 31.Rbc7 Rxd5 32.Nxd5 Bxb2 33.b6 Nc5 34.b7 Nxb7 35.Rxb7 Qe8 36.Rxh7+ Kg8 37.Rhe7 Qf8 38.Kg2 Bd4 39.Re2 Qa8 40.Rd7 Kh8 41.Re4 Bg7 42.Ree7 Bd4 43.h3 Qf8 3. (2.70): 28.Rf7 Qd8 29.Ree7 Qg8 30.Rxb7 Rd8 31.Rbc7 Rxd5 32.Nxd5 Bxb2 33.b6 Nc5 34.b7 Nxb7 35.Rxb7 Qe8 36.Rxh7+ Kg8 37.Rhe7 Qf8 38.Kg2 Bd4 39.Re2 Qa8 40.Rd7 Kh8 41.Re4 Bg7 42.Ree7 Bd4 43.h3 Qf8 4. (1.87): 28.Rd7 Rd8 29.Rf7 Qa8 30.Ree7 Rxd5 31.Nxd5 Bxb2 32.d4 Bxd4 33.Nc7 Qg8 34.Re8 Bc5 35.Rxg8+ Kxg8 36.Rf4 Nd4 37.h4 h6 38.Re4 Kf7 39.Kg2 b6 40.Rf4+ Ke7 41.Nd5+ Kd6 42.Nc3 Ke5 43.Re4+ Kd6 (hms123, 27.04.2013)
It seems that Black had better choices at move 27:
Raymond Keene - Efim Geller, Teesside 1975
 click for larger viewAnalysis by Houdini 1.5a x64: 21 ply
1. = (-0.17): 27...h6 28.Re8+ Rxe8 29.Rxe8+ Kh7 30.Bg8+ Kg6 31.Re6+ Kf5 32.Nd5 Nc5 33.Bxd4 Nxe6 34.Bc3 Qd8 35.Ne3+ Kg6 36.Bxe6 Qb6 37.Bf5+ Kf7 38.Nc4 Qf2 39.Bh3 Kg8 40.Nd2 Qc5 41.Bb4 Qxb5 42.Be6+ Kh7 43.d4 2. = (-0.08): 27...h5 28.Rf1 Bxc3 29.Rf5 Kh7 30.Be4 Kh6 31.Re6+ g6 32.b6 Nc5 33.Rg5 Nxe6 34.Rxg6+ Kh7 35.Rg5+ Kh8 36.Rxa5 Bxb2 37.Rxa4 Rc1+ 38.Kg2 Nc5 39.Ra8+ Kg7 40.Bxb7 Nd7 41.Ra7 Nxb6 42.Be4+ Kf8 43.Kh3 (hms123, 27.04.2013)
(hms123, 27.04.2013)
Here's a pgn with some suggestions from Houdini.
[Event "Teesside"]
[Site "Teesside"]
[Date "1975.??.??"]
[Round "?"]
[White "Raymond Keene"]
[Black "Efim Geller"]
[Result "1/2-1/2"]
[ECO "A07"]
[PlyCount "64"]
[EventDate "1975.??.??"]
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4 5. c4 e6 6. cxd5 Bxf3 7. Bxf3 cxd5 8.
Nc3 Nc6 9. d3 Be7 10. a3 O-O 11. b4 a5 12. b5 Nd4 13. Bg2 a4 14. Rb1 Nb3 15.
Bb2 Nc5 16. e3 Qa5 17. f4 Rac8 18. f5 Nb3 19. Qe1 Ng4 20. Rf4 Nxe3 21. fxe6 Bc5
22. exf7+ Rxf7 23. Rxf7 Nc2+ 24. Kh1 Nxe1 25. Bxd5 Kh8 26. Rxe1 Bd4 27. Rfe7 g6
(27... h6 28. Re8+ Rxe8 29. Rxe8+ Kh7 30. Bg8+ Kg6 31. Re6+ Kf5 32. Nd5 Nc5)
28. Rf1 (28. Rxb7 Nc5 29. Rf7 Qd8 30. Ree7 Qg8 31. b6 Rf8 32. Nxa4 Bxb2 33.
Nxb2) 28... Qd8 29. Rff7 Qg8 30. Rf4 (30. Nxa4 Bxb2 31. Bxb3 Bxa3 32. Rxb7)
30... Qd8 31. Rff7 Qg8 32. Rf4 Qd8 1/2-1/2 |