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Subject: Re: A test position (avoiding a speculative sacrifice) - Hiarcs view

Author: Chuck

Date: 17:26:37 11/08/00

Go up one level in this thread


On November 07, 2000 at 22:12:59, Chuck wrote:

>On November 07, 2000 at 17:40:08, Mogens Larsen wrote:
>
>>On November 07, 2000 at 16:26:24, Uri Blass wrote:
>>
>>>On November 07, 2000 at 09:03:24, Mogens Larsen wrote:
>>>
>>>>On November 07, 2000 at 07:48:19, Uri Blass wrote:
>>>>
>>>>>[D]3rr1k1/1bq1b1p1/pp1ppnnp/2p5/2P1P3/1PNBBN1P/P2Q1PP1/R2R2K1 w - - 0 1
>>
>>>LG2000 wants to play 3.e5 and not 3.Ng5 of gandalf.
>>
>>Yes, but it still plays Bxh6, which was the main exercise on my part.
>>
>>The move is also selected by Comet (at least for the moment):
>>
>>1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 N6h7 4.Bxh7+ Nxh7 5.Qxe6+ Kh8 6.Nd5 Bxd5 7.Rxd5 dxe5
>>8.Rxd8 Rxd8 9.Nxe5
>>  ±  (0.86)   Depth: 12/35   00:05:06  77909kN
>>
>>What move does Hiarcs select?
>>
>
>I am running this position on Hiarcs right now and at ply 10, 11 and 12 Hiarcs
>7.32 has selected Bxh6. I will post full results when he gets deeper.

Hiarcs has picked Bxh6 through ply 14 (2/41), but the score has dropped to
+0.02. This search has taken 22+ hours so far on an Athlon 700.

>
>Here's the analysis:
>New position
>3rr1k1/1bq1b1p1/pp1ppnnp/2p5/2P1P3/1PNBBN1P/P2Q1PP1/R2R2K1 w - - 0 1
>
>Analysis by Hiarcs 7.32:
>
>=  (-0.02) 1.Rac1   00:00:00
>=  (0.04) 1.Rac1 Bc6   00:00:00
>=  (-0.05) 1.Rac1 Bc6 2.a3   00:00:00
>=  (0.03) 1.Qb2 Bc6 2.b4   00:00:00
>=  (-0.07) 1.Qb2 Bc6 2.a3 Qb7 3.Qc2   00:00:00
>=  (-0.05) 1.Rac1 Bc6 2.a3 Qb7 3.Qc2   00:00:00
>=  (-0.05) 1.Rac1 Bc6 2.a3 Qb7 3.Qc2   00:00:00
>=  (-0.02) 1.Nh2 Bc6 2.f4 Qb7 3.Qc2   00:00:02
>=  (-0.12) 1.Nh2 Ne5 2.Bf4 Nxd3 3.Qxd3 Nh5 4.Ne2   00:00:04
>=  (-0.07) 1.Rac1 Nd7 2.a3   00:00:04
>=  (-0.01) 1.a3 Nd7 2.b4 Nge5 3.Nxe5 Nxe5   00:00:05
>=  (-0.07) 1.a3 Nd7   00:00:05
>=  (0.24) 1.Bxh6 Nd7   00:00:08
>²  (0.32) 1.Bxh6 gxh6 2.Qxh6 Ne5 3.Nxe5   00:00:09
>=  (0.07) 1.Bxh6 gxh6   00:00:11
>=  (-0.17) 1.Bxh6 gxh6 2.Qxh6 Nf8 3.Ng5 e5   00:00:14
>=  (-0.08) 1.a3 Nd7 2.Nh2 Nde5 3.f4 Nxd3 4.Qxd3 Bh4 5.Nf1   00:00:16
>=  (0.04) 1.a3 Nd7 2.Nh2 Nde5 3.Bc2 Bf6   00:00:50
>=  (-0.04) 1.a3 Nd7 2.Nh2 Nde5 3.Bc2 Bf6 4.f4 Nf7 5.Ng4 Bh4   00:01:13
>=  (0.16) 1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 N6h7 4.Bxh7+ Nxh7 5.Qxe6+ Kh8 6.Nd5 Bxd5
>7.Qxd5 dxe5 8.Qxe5+ Qxe5 9.Nxe5 Rxd1+ 10.Rxd1 Bg5 11.Nf7+ Kg8 12.Nxg5 Nxg5
>00:01:49
>=  (0.14) 1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 N6h7 4.Bxh7+ Nxh7 5.Qxe6+ Kh8 6.Nd5 Bxd5
>7.Qxd5 dxe5 8.Qxe5+ Qxe5 9.Nxe5 Kg8 10.Nc6 Rxd1+ 11.Rxd1 Bh4 12.g3   00:04:54
>=  (0.09) 1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 N6h7 4.Bxh7+ Nxh7 5.Qxe6+ Kh8 6.Nd5 Bxd5
>7.Qxd5 dxe5 8.Qxe5+ Qxe5 9.Nxe5 Kg8 10.Nd7 b5 11.Rd5 bxc4 12.bxc4 Rc8   00:18:51
>
>(K7-700, Columbia 07.11.2000)
>
>
>>>I see that gandlf after more than 10.5 hours at depth 15 has also 3.e5 in the
>>>main line and the score dropped to 0.25 pawns for white so it started to
>>>understand that 1.Bxh6 is not so good.
>>
>>What would be the best move? Bc2?
>>
>>>It got this main line after 5 hours 24 minutes abd 1 second.
>>>
>>>Gandalf expects 1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 N6h7 4.Kh1 Kh8 5.Be4 dxe5.
>>>
>>>4.Kh1 is strange in this line because 4.Bxh7+ wins a pawn but gandalf does not
>>>want to trade the bishop for some reason.
>>
>>Maybe there's a penalty for exchanging pieces when the opponent king is exposed
>>(?).
>>
>>Mogens.
>>
>>PS: I see that Denmark and Israel drew at the Olympics in Turkey. The game on
>>the 2nd board seemed very strange when I watched some of it live. It looked like
>>a win for Avrukh.



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