Author: Ingo Bauer
Date: 12:32:05 06/29/04
Go up one level in this thread
On June 29, 2004 at 11:11:57, Jaime Benito de Valle Ruiz wrote:
>
>>Both a positional and tactical test. Does any engine find Karpov's 19.Rd3!
>>
>
>Shredder 8 with 32Mb RAM using an Athlon 1800+ finds it in 48 seconds (depth 13)
>in INFINITE search, and suddendly the score raises from +0.03 to +0.62 and
>sticks to it. It is hard to tell how much is Shredder "understanding" in this
>position, but after forcing Shredder to make this move, the evaluation (always
>given for white) from the black's point of view changes to +0.87 within 1
>second, and later to +1.49 (depth 15)!! Allow several years for computers to
>become much faster than now, and surely these positions will be found through
>"pruned brute force".
>
>P.S.- While I was writting this, the score went to +2.12 still at depth 15, then
>probably failed high for the search window, and after a research it gave a
>+0.76, and later a +0.86 for depth 16.
2r3k1/pp1bpp1p/3p1npQ/q7/2r1P1P1/2N2P2/PPP1N3/2KR3R w - -
Engine: Shredder 8 (256 MB/XP3200+)
by Stefan Meyer-Kahlen
9/34 0:01 -0.07++ 1.Rh4 R4c5 2.Nd5 Rxc2+ 3.Kb1 Rxe2
4.Nxe7+ Kh8 5.Nxc8 Qd2 6.Rxd2 (633.306) 410
9/34 0:01 -0.07 1.Rh4 R4c5 2.Nd5 Rxc2+ 3.Kb1 Qb5
4.Qxh7+ Nxh7 5.Nxe7+ Kf8 6.Nxg6+ fxg6 (648.035) 411
10/28 0:02 -0.09 1.Rh4 R4c5 2.Kb1 g5 3.Rh2 Be6 4.Rdh1 Qb4
5.Rh3 b6 (896.671) 408
10/28 0:02 -0.08++ 1.Kb1 Ba4 2.Rc1 R8c5 3.g5 Rxg5 4.Nd5 Bc6
5.Qxg5 Qxa2+ 6.Kxa2 (1.007.793) 407
10/28 0:02 0.00 1.Kb1 Ba4 2.Rc1 Bc6 3.Rcd1 Ba4 4.Rc1 Bc6
5.Rcd1 Ba4 6.Rc1 (1.104.484) 409
10/32 0:03 +0.01++ 1.Rd5 R4c5 2.e5 dxe5 3.Rxd7 Rxc3
4.Nxc3 Qd5 5.Nxd5 (1.361.310) 410
10/32 0:03 +0.10 1.Rd5 Qc7 2.Kb1 Be6 3.g5 Nh5 4.Rb5 Qc6
5.Qf8+ Rxf8 (1.522.186) 414
11/25 0:04 +0.03 1.Rd5 Qc7 2.Rd4 Be6 3.g5 Nh5 4.f4 Qc5
5.Rxc4 Bxc4 6.Ng1 Nxf4 7.Qxg6+ fxg6 (2.016.039) 415
12/29 0:07 0.00 1.Rd5 Qc7 2.Kb1 Be6 3.Rg5 Qb6 4.Rb5 Qa6
5.Rg5 Qb6 6.Rb5 Qa6 7.Rg5 Qb6 8.Rb5 (3.289.351) 416
13/32 0:15 0.00 1.Rd5 Qc7 2.Kb1 Be6 3.Rg5 Qb6 4.Rb5 Qa6
5.Rg5 Qb6 6.Rb5 Qa6 7.Rg5 Qb6 8.Rb5 (6.663.761) 421
13/32 0:19 +0.01++ 1.Rd3 Bc6 2.g5 Nh5 3.Nf4 Qb6 4.Nxh5 Bxe4 (8.234.573) 422
13/35 0:26 +0.21 1.Rd3 Be6 2.Nf4 Qe5 3.Nxe6 Qxe6
4.Kb1 R4c5 5.g5 Nh5 6.f4 Rxc3 7.Rxc3 Rxc3
8.bxc3 (11.021.907) 423
14/38 0:42 +0.46++ 1.Rd3 Be6 2.g5 Nh5 3.Nf4 Rxc3 4.Rxc3 Qxa2
5.Nxe6 Qa1+ 6.Kd2 Nf6 7.Rxa1 (17.416.005) 413
14/38 0:57 +0.78 1.Rd3 Be6 2.g5 Nh5 3.Nf4 Rxc3 4.Rxc3 Rxc3
5.bxc3 Qxc3 6.Nxe6 fxe6 7.f4 (23.808.237) 417
15/39 1:08 +0.53-- 1.Rd3 Be6 2.g5 Nh5 3.Nf4 Rxc3 4.Rxc3 Rxc3
5.bxc3 Qxc3 6.Nxe6 fxe6 7.Rxh5 gxh5 (28.843.878) 419
15/39 1:19 +0.53 1.Rd3 Be6 2.g5 Nh5 3.Nf4 Rxc3 4.bxc3 Rxc3
5.Nxh5 Qxg5+ 6.Qxg5 Rxc2+ 7.Kxc2 Bb3+
8.Kxb3 (33.411.403) 417
16/44 2:11 +0.78++ 1.Rd3 Be6 2.g5 Nh5 3.Nf4 Rxc3 4.bxc3 Rxc3
5.Nxh5 Qxg5+ 6.Qxg5 Rxc2+ 7.Kxc2 Bxa2 (55.869.871) 423
16/48 3:04 +0.80 1.Rd3 Qd8 2.Nd5 e6 3.Nxf6+ Qxf6
4.Qxh7+ Kf8 5.c3 Ke7 6.Kb1 b6 7.Rh3 b5
8.Nd4 b4 9.Nf5+ exf5 (78.125.666) 422
17/45 4:45 +0.85 1.Rd3 Qd8 2.Nd5 e6 3.Nxf6+ Qxf6
4.Qxh7+ Kf8 5.c3 Ke7 6.Kb1 R4c5
7.Nd4 Ba4 8.Qh6 g5 9.Qh7 Rxc3
10.Rxc3 Qf5 (117.153.867) 410
best move: Rd1-d3 time: 5:00.953 min n/s: 412.358 CPU 95.3% n/s(1CPU):
432.694 nodes: 124.088.041
Ingo
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