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Subject: Re: a mistake in the gcp test suite(ECM 1945) Rf3 is another solution

Author: Uri Blass

Date: 07:24:44 11/13/02

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On November 13, 2002 at 09:43:36, Bob Durrett wrote:

>On November 13, 2002 at 06:48:47, Joachim Rang wrote:
>
>>yep, I think you're right.
>>
>>This is what I got from DF 7 on depth 15:
>>
>>New game
>>5rk1/p1p1br2/1p1p2qp/4p3/2PPn1pP/3Q2P1/PPN1P1K1/2RR2B1 b - - 0 1
>>
>>Analysis by Deep Fritz 7:
>>
>>1. -+ (-3.31): 1...Bxh4 2.gxh4 Rf3 3.dxe5 Rxd3 4.exd3 dxe5 5.Be3 Nd6 6.h5 Qxh5
>>7.Rh1 Qf5 8.Ne1
>>2. -+ (-3.09): 1...Rf3 2.exf3 gxf3+ 3.Qxf3 Rxf3 4.Kxf3 Nxg3 5.dxe5 Bxh4 6.Rd4
>>Qf5+ 7.Kg2 Ne2 8.Ne3 Qxe5 9.Rg4+ Bg5 10.Re1
>
>Obviously, then, 1...Bxh4 is better than 1...Rf3.  Right?   : )
>
>Bob D.

No

I suspect that the order may be changed if you use longer search.

The line 1...Rf3 2.exf3 gxf3+ 3.Qxf3 Rxf3 4.Kxf3 Nxg3 is forced and
after it 5.dxe5 is not the best move.
I expect programs that use singular extensions like Deep Sjeng to find 1...Rf3
after a long search.

Uri

• Re: a mistake in the gcp test suite(ECM 1945) Rf3 is another solution Robert Hyatt 14:00:20 11/13/02
  • Re: a mistake in the gcp test suite(ECM 1945) Rf3 is another solution Joachim Rang 04:49:33 11/14/02
  • Re: a mistake in the gcp test suite(ECM 1945) Rf3 is another solution Uri Blass 01:17:54 11/14/02
• Re: a mistake in the gcp test suite(ECM 1945) Rf3 is another solution Gian-Carlo Pascutto 08:47:29 11/13/02
  • Re: a mistake in the gcp test suite(ECM 1945) Rf3 is another solution Uri Blass 09:43:11 11/13/02

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