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Subject: Re: Can Shredder 9 UCI find a best move R1e6!! in the following position?

Author: John Merlino

Date: 17:38:58 02/12/05

Go up one level in this thread


On February 12, 2005 at 20:12:17, Darrel Briley wrote:

>On February 12, 2005 at 20:03:07, Eran Karu wrote:
>
>>[D]1rb2rk1/4R1p1/1pqn1pBp/3p4/5Q2/1NP3PP/6PK/4R3 w - - 0 30
>>
>>The position above comes from Zappa-Searcher, CCT6. Here Be8 wins the exchange,
>>but R1e6!! wins overwhelmingly. The game continued 30. Re6 Bxe6 31. Nd4 Qc4 32.
>>Qxd6 Bxh3 33. Kxh3 Kh8 35. Nf5 and it is obvious Zappa's attack is too strong
>>for Black to survive. Zappa won on move 43.
>>
>>Can Shredder 9 UCI as White find R1e6? I am eager to know it. Please post
>>results here.
>>
>>Thanks,
>>Eran Karu
>
>Shredder9 UCI in Chessbase gui, 256mb Hash, AthlonXP 2600+ (and other programs
>running) in about 30 seconds.
>
>New game,
>1rb2rk1/4R1p1/1pqn1pBp/3p4/5Q2/1NP3PP/6PK/4R3 w - - 0 1
>
>Analysis by Shredder 9 UCI:
>
>1. +- (2.68): 1.R1e6 Bxe6 2.Nd4 Qc4 3.Qxd6 Bxh3 4.Kxh3 Kh8 5.Nf5 Rg8 6.Qxf6 Qf1
>7.Kh2 Rbf8 8.Rxg7 Qxg2+ 9.Kxg2
>2. +- (2.23): 1.Be8 Rxe8 2.Rxe8+ Nxe8 3.Qxb8 Kf7 4.Re2 Nd6 5.Nd4 Qc5 6.Qa7+ Nb7
>7.Re3 Kg8 8.Re8+ Kf7 9.Rh8 Qxc3 10.Qxb6 Qc1
>
>(Bee,  12.02.2005)

CM9_R1 on an AMD 2500 finds it in 0:10....

Time	Depth	Score	Positions	Moves
0:00	1/3	1.67	1597		30.Nd4 Qc5 31.Ra1 Rb7
0:00	1/4	1.49	6883		30.Nd4 Qc5 31.Rd1 Ra8 32.Qf3
0:00	1/5	0.97	26102		30.Nd4 Qc5 31.Rd1 Ra8 32.Rb1 Nc4
0:01	1/6	1.14	88928		30.Nd4 Qc5 31.Qd2 Nc4 32.Qd3 Ra8
0:02	1/7	0.87	328405		30.Nd4 Qc5 31.Ra7 Rb7 32.Rxb7 Nxb7
					33.Qe3 Nd6
0:02	1/7	1.25	481624		30.Be8 Rxe8 31.Rxe8+ Nxe8 32.Qxb8
					Kf8 33.Rd1 Qc7 34.Qxc7 Nxc7
0:03	1/8	1.49	725548		30.Be8 Rxe8 31.Rxe8+ Nxe8 32.Qxb8
					Kf8 33.Rd1 Qc7 34.Qxc7 Nxc7 35.Nd4
					Ba6
0:06	1/9	1.44	1542892		30.Be8 Rxe8 31.Rxe8+ Nxe8 32.Qxb8
					Kf7 33.Re3 Qb7 34.Qf4 g5 35.Qb4 Bf5
0:10	1/9	1.73	2875532		30.R1e6 Bxe6 31.Nd4 Qc4 32.Qxd6
					Bxh3 33.gxh3 Qxc3 34.Qxd5+ Kh8
					35.Qd6
0:12	1/10	1.71	3369129		30.R1e6 Bxe6 31.Nd4 Qc4 32.Qxd6
					Bxh3 33.Kxh3 Kh8 34.Rc7 Rfd8 35.Qe7
0:25	1/11	1.61	7833620		30.R1e6 Bxe6 31.Nd4 Qc4 32.Qxd6
					Bxh3 33.Kxh3 Kh8 34.Rc7 Qa2 35.Qe7

jm



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