Author: Uri Blass
Date: 12:53:53 10/06/02
Go up one level in this thread
On October 06, 2002 at 15:38:17, Roy Eassa wrote:
>On October 06, 2002 at 15:31:44, Uri Blass wrote:
>
>>On October 06, 2002 at 14:02:02, Ed Schröder wrote:
>>
>>>On October 06, 2002 at 13:18:22, martin fierz wrote:
>>>
>>>>On October 06, 2002 at 12:31:43, Ed Schröder wrote:
>>>>
>>>>>On October 06, 2002 at 12:22:18, Terry McCracken wrote:
>>>>>
>>>>>>On October 06, 2002 at 12:10:43, Ed Schröder wrote:
>>>>>>
>>>>>>>[Event "A match in KasparovChess Playing Zone"]
>>>>>>>[Site "www.KasparovChess.com"]
>>>>>>>[Time "Sun Oct 06 18:13:37 GMT+02:00 2002"]
>>>>>>>[White "Kramnik"]
>>>>>>>[Black "Deep_Fritz"]
>>>>>>>[Result "*"]
>>>>>>>[WhiteELO "----"]
>>>>>>>[BlackELO "----"]
>>>>>>>
>>>>>>>1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5
>>>>>>>6. O-O a6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Kf1 b5 10. Be2 Bb7
>>>>>>>11. Nbd2 Nbd7 12. Nb3 Bf8 13. a4 b4 14. Nfd2 Bd5 15. f3 Bd6
>>>>>>>16. g3 e5 17. e4 Be6 18. Nc4 Bc7 19. Be3 a5 20. Nc5 Nxc5
>>>>>>>21. Bxc5 Nd7 22. Nd6+ Kf8 23. Bf2 Bxd6 24. Rxd6 Ke7 25. Rad1 Rhc8
>>>>>>>26. Bb5 Nc5 27. Bc6 Bc4+ 28. Ke1 Nd3+ 29. R1xd3 Bxd3 30. Bc5 Bc4
>>>>>>>31. Rd4+ Kf6 32. Rxc4 Rxc6 33. Be7+ Kxe7 34. Rxc6 Kd7 35. Rc5 f6
>>>>>>>36. Kd2 Kd6 37. Rd5+ Kc6 38. Kd3 g6 39. Kc4 g5 40. h3 h6
>>>>>>>41. h4 gxh4 42. gxh4 Ra7 {*}
>>>>>>>
>>>>>>>Rebel +1.50 for white.
>>>>>>>
>>>>>>>Ed
>>>>>>
>>>>>>Yes, it should be over for Black, 43.h5! has sealed any leaks...Zugzwang is
>>>>>>coming.
>>>>>
>>>>>Is it safe to say white was lost after the exchange of pieces entering the rook
>>>>>end-game? I have been there, thinking Rebel being safe entering a rook end-game
>>>>>and then to find out 10-15 moves later you have entered a lost position! You can
>>>>>calculate as deep as you want and nothing will help! Those awful super-GM's!
>>>>>
>>>>>Ed
>>>>
>>>>svidler was commenting on ICC and said 34...Kd7 was a mistake and instead ...Rd8
>>>>should be played. the passive defense was bound to lose according to him
>>>
>>>And no program will play 34..Rd8 because it sacs the a-pawn.
>>
>>
>>I am not sure.
>>
>>I suspect that if you let it to search for many hours it may see that every move
>>is losing a pawn and may prefer 34...Rd8
>>
>>I try to go backward with yace(only material) to find when black lost a pawn and
>>I got into move 38 when yace(only material) suggest 38...h6 with 0.00 evaluation
>>but yace(no material) used only few minutes so maybe at depth>18 it can find
>>positive score for white.
>>
>>I do not know if 38...h6 was better but there are positional reasons to prefer
>>38...h6
>>
>>After 38...h6 only g7 is not protected(from h6,g7,f6,e5) when after 38...g6 both
>>h7 and f6 are not protected so at least for me 38...h6 seems to be better.
>>
>>Uri
>
>
>38...h6 39.f4 exf4 40.gxf4 Ra7 41.h4
>
>looks pretty darn good for White. Even Fritz 7 thinks White is ahead by more
>than a pawn.
Yace(only material has problem to see a pawn advantage without learning.
I am going to check that line but after 38...g6 it says without learning after
more than 10 minutes of search
Kramnik(GM) - Deep_Fritz_1-0
r7/7p/2k2pp1/p2Rp3/Pp2P3/3K1PP1/1P5P/8 w - - 0 1
Analysis by Yace 0.99.56:
39.Rd5xe5 f6xe5
-+ (-4.20) Depth: 1 00:00:02
39.g3-g4
= (0.00) Depth: 1 00:00:02
39.g3-g4 b4-b3
= (0.00) Depth: 2 00:00:02
39.g3-g4 b4-b3 40.Rd5-b5
= (0.00) Depth: 3 00:00:02
39.g3-g4 Ra8-a7 40.Rd5-b5 Ra7-d7+ 41.Kd3-e3
= (0.00) Depth: 4 00:00:02
39.g3-g4 Ra8-a7 40.Rd5-b5 Ra7-d7+ 41.Kd3-e3 Rd7-a7
= (0.00) Depth: 5 00:00:02 1kN
39.g3-g4 Ra8-a7 40.Rd5-b5 Ra7-d7+ 41.Kd3-e3 Rd7-a7 42.Rb5-b8
= (0.00) Depth: 6 00:00:02 3kN
39.g3-g4 Kc6-c7 40.Rd5-c5+ Kc7-d7 41.Kd3-e3 Ra8-a7 42.Rc5-b5 Kd7-e7
= (0.00) Depth: 7 00:00:02 14kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Kc7-d7 42.Ke3-d3 Kd7-e7
= (0.00) Depth: 8 00:00:02 36kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Kc7-d7
= (0.00) Depth: 9 00:00:02 56kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Kc7-d7 44.Rb5-b8 g6-g5+ 45.Kf4-f5
= (0.00) Depth: 10 00:00:02 95kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Kc7-d7 44.Rb5-b8 g6-g5+ 45.Kf4-f5 Kd7-e7
= (0.00) Depth: 11 00:00:02 181kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Kc7-d7 44.Rb5-b8 g6-g5+ 45.Kf4-f5 Kd7-e7 46.e4-e5
= (0.00) Depth: 12 00:00:02 296kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Kc7-d7 44.Rb5-b8 h6-h5 45.g4xh5 g6xh5 46.Kf4-f5
= (0.00) Depth: 13 00:00:04 923kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Ra7-a6 44.h2-h3 Kc7-c8 45.Rb5-c5+ Kc8-b7 46.e4-e5 f6xe5+ 47.Rc5xe5 b4-b3
= (0.00) Depth: 14 00:00:06 2262kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Ra7-a6 44.h2-h3 Kc7-c8 45.Rb5-c5+ Kc8-b7 46.e4-e5 f6xe5+ 47.Rc5xe5 g6-g5+
48.Kf4-f5 Kb7-b8
= (0.00) Depth: 15 00:00:12 6074kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Ra7-a6 44.h2-h3 Kc7-c8 45.Rb5-c5+ Kc8-b7 46.e4-e5 f6xe5+ 47.Rc5xe5 g6-g5+
48.Kf4-f5 Kb7-b8 49.b2-b3
= (0.00) Depth: 16 00:00:39 23430kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Ra7-a6 44.h2-h3 Kc7-c8 45.Rb5-c5+ Kc8-b7 46.e4-e5 f6xe5+ 47.Rc5xe5 g6-g5+
48.Kf4-f5 Kb7-b8 49.b2-b3 Ra6-a7
= (0.00) Depth: 17 00:01:30 53943kN
39.g3-g4 h7-h6 40.Kd3-e3 Kc6-c7 41.Rd5-b5 Ra8-a7 42.f3-f4 e5xf4+ 43.Ke3xf4
Ra7-a6 44.h2-h3 Kc7-c8 45.Rb5-c5+ Kc8-b7 46.e4-e5 f6xe5+ 47.Rc5xe5 g6-g5+
48.Kf4-f5 Kb7-b8 49.b2-b3 Ra6-a7 50.Kf5-f6 Ra7-a6+ 51.Kf6-f7
= (0.00) Depth: 18 00:03:16 116856kN
39.h2-h4 h7-h6 40.Kd3-c4 g6-g5 41.f3-f4 e5xf4 42.g3xf4 g5xh4 43.Rd5-h5 Ra8-h8
44.Rh5xa5 Rh8-e8 45.Ra5-a6+ Kc6-d7 46.Ra6-a7+ Kd7-e6 47.Kc4xb4 Ke6-d6 48.Ra7-a6+
Kd6-c7 49.Ra6xf6 h6-h5
= (0.01) Depth: 18 00:06:30 234603kN
39.h2-h4 h7-h6 40.Kd3-c4 g6-g5 41.f3-f4 e5xf4 42.g3xf4 g5xf4 43.Rd5-f5 Kc6-d6
44.Rf5xf4 Ra8-c8+ 45.Kc4-b5 h6-h5 46.Kb5xa5 Rc8-a8+ 47.Ka5xb4 Ra8-b8+ 48.Kb4-c3
Kd6-e5 49.Rf4-f5+ Ke5-e6
² (0.40) Depth: 18 00:09:11 334751kN
39.h2-h4 h7-h6 40.Kd3-c4 g6-g5 41.h4-h5 b4-b3 42.Kc4xb3 g5-g4 43.f3xg4 Ra8-g8
44.g4-g5 Rg8xg5 45.Kb3-c4 f6-f5 46.Rd5xa5 f5xe4 47.Ra5-a6+ Kc6-b7
± (0.80) Depth: 18 00:11:45 427401kN
(Blass, Tel-aviv 06.10.2002)
After h6 f4 exf4 gxf4 Ra7 h4
Yace need depth 17 to fail low on Ra8 h5 so it seems that h6 is more complicated
but black is losing a pawn in both cases.
Uri
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