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Subject: Re: Test position from Ilya Smirin vs Gambit Tiger

Author: Roy Brunjes

Date: 19:52:52 07/21/03

Go up one level in this thread


On July 21, 2003 at 22:37:19, Sherry Washington wrote:

>On July 21, 2003 at 22:25:59, Omid David Tabibi wrote:
>
>>After Tiger accepted the rook sacrifice by 29... Bxa1 it reached the following
>>position:
>>
>>Ilya Smirin - Gambit Tiger
>>[D]r4k2/1p2q2p/1Q2bp1P/rP2p1p1/P2pP3/3P2P1/3N1PBK/b1R5 w - - 0 30
>>
>>I tested many programs, but none manage to find the winning variation for white,
>>nor do they even evaluate the position as favorable for white. Does any engine
>>manage to find the winning variation?
>>
>>The winning variation, as played in the game, is:
>>30. Rc7 Qd8 31. Bh3 g4 32. Bxg4 Bxg4 33. Qc5+ Ke8 34. Rxh7 +-
>
>
>By the Way i see no Anti-computer tactics in this game, it looks to me that
>Smririn played normal brilliant tactical chess vs the machine.

Here is CM9000's thoughts (Junior personality) on my Pentium-4 1.8 GHz laptop:

Time	Depth	Score	Positions	Moves
0:01	1/8	-0.59	173274		30.Rc7 Qd8 31.Nc4 Rxa4 32.Rxh7
					Qxb6 33.Nxb6 Bf7 34.Nxa4 Rxa4
0:04	1/9	0.05	428419		30.Rc7 Qd8 31.Nc4 Rxa4 32.Rxh7
					Qxb6 33.Nxb6 Bg8 34.Rc7 R4a7 35.Nxa8
					Rxa8 36.Rxb7
0:08	1/10	0.08	924712		30.Rc7 Qd8 31.Nc4 Bc3 32.Nxa5 Bxa5
					33.Qc5+ Kg8 34.Rxb7 Bf7 35.Qe7
					Qxe7 36.Rxe7
0:24	1/11	0.35	2615101		30.Rc7 Qd8 31.Nc4 Bc3 32.Nxa5 Bxa5
					33.Qc5+ Kg8 34.Rxb7 Bf7 35.Bh3
					Qf8 36.Qe7 Qxe7 37.Rxe7
1:08	1/12	0.91	7296538		30.Rc7 Qd8 31.Bh3 g4 32.Bxg4 Bxg4
					33.Qc5+ Ke8 34.Rxh7 Rxa4 35.Nc4
					b6 36.Qc6+ Kf8 37.Rh8+ Kf7 38.Rxd8
					Rxd8 39.Qxb6
3:32	2/13	1.52	21891698	30.Rc7 Qd8 31.Bh3 g4 32.Bxg4 Bxg4
					33.Qc5+ Ke8 34.Rxh7 Rxa4 35.Nc4
					b6 36.Qc6+ Kf8 37.Qb7 Bd7 38.Rxd7

Thus at 1:08 it sees the entire winning line actually played out in the game
(through 34. Rxh7).

Roy



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