Author: Uri Blass
Date: 00:33:13 05/20/01
Go up one level in this thread
On May 19, 2001 at 11:03:49, Dieter Buerssner wrote:
>In the game Yace - Goldbar in Leiden, the following position was on the board:
>
>[D] 1r3rk1/p1q2pp1/3b3p/7Q/2b5/3NB2P/n1P2PP1/R3RBK1 w - -
>
>I think, this may be suitable as a test position. Yace here played Bxh6.
>What do other programs think?
>
>Regards,
>Dieter
>
>Yace on AMD K6-2 475, 30M hash:
>
> 4731871 32.256 0.33 9t 1.Qg4 f5 2.Qd4 Rf7 3.Be2 Bh2+ 4.Kf1 Bd6 5.Nc5
> Bxc5 6.Qxc5 {10}
> 10210373 1:09.6 0.34 9t+ 1.Bxh6 gxh6 2.Re4 Bxd3 3.cxd3 Bh2+ 4.Kh1 Qc4
> 12640730 1:27.3 0.66 9t 1.Bxh6 gxh6 2.Re4 Be6 3.Qxh6 Qc3 4.Rxe6 Qxa1
> 5.Qg5+ Qg7 6.Qxg7+ Kxg7H {HT} {-340}
> 13611852 1:33.3 0.66 9. 1.Bxh6 gxh6 2.Re4 Be6 3.Qxh6 Qc3 4.Rxe6 Qxa1
> 5.Qg5+ Qg7 6.Qxg7+ Kxg7 {HT} {-340}
> 48138295 5:21.8 0.86 10t 1.Bxh6 gxh6 2.Re4 Bh2+ 3.Kh1 Rb6 4.Qg4+ Rg6
> 5.Rxc4 Rxg4 6.Rxc7 Bxc7 {HT} {-420}
> 52663477 5:50.6 0.86 10. 1.Bxh6 gxh6 2.Re4 Bh2+ 3.Kh1 Rb6 4.Qg4+ Rg6
> 5.Rxc4 Rxg4 6.Rxc7 Bxc7 {HT} {-420}
Here is Deep Fritz's analysis on pIII800
New position
1r3rk1/p1q2pp1/3b3p/7Q/2b5/3NB2P/n1P2PP1/R3RBK1 w - - 0 1
Analysis by Deep Fritz:
1.Rxa2--
³ (-0.53) Depth: 1/3 00:00:00
1.Rxa2-- Bxa2
µ (-1.28) Depth: 1/5 00:00:00
1.Bxh6!
µ (-1.19) Depth: 1/8 00:00:00
1.Bxh6! gxh6
µ (-1.03) Depth: 1/8 00:00:00
1.Be2!
³ (-0.47) Depth: 1/8 00:00:00
1.Be2!
² (0.47) Depth: 1/8 00:00:00
1.Be2 Rfe8
= (0.22) Depth: 2/8 00:00:00
1.Nc5!
² (0.28) Depth: 2/9 00:00:00
1.Nc5! Bxf1 2.Kxf1
² (0.44) Depth: 2/9 00:00:00
1.Nc5 Bxf1 2.Rxa2
= (0.25) Depth: 3/13 00:00:00 1kN
1.g3!
² (0.28) Depth: 3/13 00:00:00 2kN
1.g3 Rb5 2.Qf3 Rfb8
= (0.03) Depth: 4/15 00:00:00 5kN
1.Nc5!
= (0.06) Depth: 4/15 00:00:00 6kN
1.Nc5! Bxf1
= (0.13) Depth: 4/15 00:00:00 8kN
1.Be2!
= (0.16) Depth: 4/15 00:00:00 9kN
1.Be2! Rfe8
= (0.22) Depth: 4/15 00:00:00 10kN
1.Qg4!
= (0.25) Depth: 4/16 00:00:00 15kN
1.Qg4! f5 2.Qg6 a5
² (0.38) Depth: 4/16 00:00:00 18kN
1.Qg4 f5 2.Qg6 Rf6 3.Qh5
² (0.34) Depth: 5/17 00:00:00 35kN
1.Qg4 f5 2.Qg6 Rf6 3.Qh5 a5
² (0.31) Depth: 6/20 00:00:00 99kN
1.Qg4 f5 2.Qg6 Rf6 3.Qh5 Bf7 4.Qe2
² (0.28) Depth: 7/22 00:00:00 273kN
1.Qg4 Be6 2.Qa4 Nb4 3.Bxa7 Rb7 4.Nxb4 Rxb4 5.Qa6
² (0.34) Depth: 8/24 00:00:01 964kN
1.Nc1!
² (0.38) Depth: 8/24 00:00:03 2279kN
1.Nc1! Bxf1 2.Rxa2 Bb5 3.Bxa7 Rfe8 4.Re3 Bh2+ 5.Kh1
² (0.41) Depth: 8/24 00:00:03 2521kN
1.Nc1 Bxf1 2.Rxa2 Bb5 3.Bxa7 Rfe8 4.Rd1 Bh2+ 5.Kh1 Rb7
² (0.44) Depth: 9/25 00:00:05 3948kN
1.Nc1 Bxf1 2.Rxa2 Bb5 3.Bxa7 Rbe8 4.Be3 Re5 5.Qf3 Rfe8 6.Kh1
² (0.31) Depth: 10/26 00:00:10 7135kN
1.Bxh6!
² (0.34) Depth: 10/29 00:00:34 23564kN
1.Bxh6! Rb5 2.Qg4 f5 3.Qg6 Rb6 4.Kh1 Be5 5.Nxe5
² (0.47) Depth: 10/33 00:00:45 30692kN
1.Bxh6 Rb5 2.Qg4 f5 3.Qg6 Rb6 4.Qg5 Nc3 5.Nf4 Bxf1 6.Kxf1 Rfb8
² (0.59) Depth: 11/29 00:00:58 40374kN
1.Bxh6 Rb5 2.Qg4 f5 3.Qg5 Nc3 4.Nf4 Bxf1 5.Kxf1 Ne4 6.Qxg7+ Qxg7
² (0.56) Depth: 12/33 00:02:05 88069kN
1.Bxh6!
± (0.88) Depth: 13/37 00:06:03 255568kN
1.Bxh6! Rb5 2.Qg4 f5 3.Qg5 f4 4.Qg6 Rb6 5.Nc5
± (1.06) Depth: 13/37 00:11:02 457398kN
(Blass, Tel-Aviv 20.05.2001)
I am not sure if 1.Bxh6 is a simple win after the right defence.
Avoiding gxh6 may be another test position.
Goldbar failed to solve it in the game.
Uri
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