Author: Uri Blass
Date: 07:14:55 02/15/04
Go up one level in this thread
On February 15, 2004 at 10:02:59, David Dory wrote:
>On February 15, 2004 at 08:44:50, Uri Blass wrote:
>
>>On February 15, 2004 at 08:44:23, Uri Blass wrote:
>>
>>>[D]8/8/1p2k2p/p3p3/1PP3p1/P2K2P1/7P/8 w - - 0 40
>>>
>>>It is interesting that chess programs give Ke4 a big advantage when it leads to
>>>a draw.
>>>
>>>I am not sure if white can win.
>>>
>>>It seems that Ke3 is an interesting move
>>>
>>>New game - Yace Paderborn
>>>8/8/1p2k2p/p3p3/1PP3p1/P2K2P1/7P/8 w - - 0 1
>>>
>>>Analysis by Shredder 7.04:
>>>
>>>40.Ke3 axb4 41.axb4 Kd7 42.c5 b5 43.Ke4 Ke6 44.c6 Kd6 45.Kf5 Kc7
>>> +- (2.51) Depth: 23/47 00:08:36 103928kN
>>>
>>>(Blass, Tel-Aviv 15.02.2004)
>>>
>>>
>>>
>>>Uri
>>
>>Hardware A1000.
>
>Should be a win for white with Ke4. You play the queen side majority pawn until
>the black king has to take the last one, then white king snags blacks pawn at e5
>and Black is hopeless then. White mops up blacks pawns on the kingside, and
>marches his own down for promotion.
>
>1.Ke4, axb4 2.axb4 (any) 3. c5, bxc5 (Kd7, Kxe5, etc.) 4. bxc5, and Black has to
>leave his e5 pawn, and the king's side, to White's king to mop up.
>
>What line do you see that only gives Ke4 a draw?
>
>Hardware - one feeble mind.
>David
Here are the moves of the game until the point when it is a clear draw even for
weak human players.
I simply did not analyze enough Ke3 to be sure that it is winning.
I tried to see what happen between yace and itself and got some lines that
suggest that white has good chances.
[Event "Blitz:30'"]
[Site "Tel-Aviv"]
[Date "2004.02.15"]
[Round "?"]
[White "Or Cohen"]
[Black "Doron Yam"]
[Result "*"]
[ECO "C29"]
[Annotator "Blass,Uri"]
[PlyCount "111"]
[TimeControl "1800"]
{64MB, Shredder7.ctg, URI-PC
} 1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3
Bg4 6. Qe2 Nxc3 7. dxc3 c6 8. Bf4 g5 9. Be3 Nd7 10. O-O-O Be7 11. Bd4 Be6 12.
c4 Qa5 13. a3 g4 14. Nd2 Bg5 15. Bc3 Qb6 16. cxd5 cxd5 17. Kb1 Rc8 18. Nb3 Rxc3
19. bxc3 a6 20. Ka2 Be7 21. g3 d4 22. Rxd4 Qa5 23. Rb4 (23. c4 Qxa3+ 24. Kb1
Nb6 25. c5 Bf5 26. Qe3 Bxc5 27. Bd3 Nd5 28. Rxd5 Bxe3 29. Bxf5) 23... Bxb4 24.
cxb4 Qxe5 25. Qxe5 Nxe5 26. Bg2 b6 27. Re1 f6 28. Kb2 Kf7 29. Nd4 Bc4 30. Nc6
Re8 31. Nxe5+ Rxe5 32. Rxe5 fxe5 33. Kc3 Be2 34. Kd2 Bc4 35. Ke3 Kf6 36. Be4 h6
37. Bd3 Bxd3 38. Kxd3 Ke6 39. c4 a5 40. Ke4 (40. bxa5 bxa5 41. a4 Kd6 42. Ke4)
(40. Ke3 Kd6 41. Ke4 Ke6 (41... a4 42. Kf5 h5 43. Kg5 Ke6 44. Kxh5 e4 45. Kxg4
Ke5 46. c5 bxc5 (46... Kd4) 47. bxc5 Kd4 48. c6 e3 49. Kf3 Kd3 50. c7) 42. c5
axb4 (42... bxc5 43. bxa5 Kd6 44. a6 Kc6 45. Kxe5 Kb6 46. Kd5 Kxa6 47. Kxc5)
43. axb4 b5 44. c6 Kd6 45. c7 Kxc7 46. Kxe5) 40... a4 41. c5 bxc5 42. bxc5 h5
43. c6 Kd6 44. c7 Kxc7 45. Kxe5 Kc6 46. Kd4 Kd6 47. Kc4 Ke5 48. Kb4 Ke4 49.
Kxa4 Kf3 50. Kb3 Kg2 51. a4 Kxh2*
Uri
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