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Subject: Re: some test positions (the usual everyday brilliancies, etc.)

Author: Roy Eassa

Date: 10:13:15 12/09/02

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On December 09, 2002 at 13:01:51, Roy Eassa wrote:

>On December 04, 2002 at 21:44:53, Mike S. wrote:
>
>>CM9000_Utz12n - Ruffian 1.0.1 [D21]
>>[D]rnb1k2r/p3q1p1/2pnp2p/5pN1/3P4/Q1NB4/5PPP/R3R1K1 w kq - 0 19
>>19.Nxe6! Bxe6 20.d5 Ne4 [20...cxd5 21.Nxd5 Bxd5 (21...Qd7? 22.Rxe6+ Qxe6
>>23.Nc7+) 22.Bb5++-] 21.Bxe4 fxe4 22.dxe6 Qxa3 23.Rxa3 Ke7 24.Nxe4 Kxe6 25.Rd3
>>Kf7 26.Ng5+ hxg5 [26...Kg6 27.Rd6+ Kxg5 28.Re5+ Kf4 29.Rde6 mit schnellem Matt.]
>>27.Rf3+ Kg6 28.Re6+ [28.Re6+ Kh7 29.Rh3+ Kg8 30.Re8+ Kf7 31.Rexh8] 1-0
>
>
>This is a good "subset" test: How long before your program selects Rd3! AND
>detects that White is winning (by at least 2 pawns)?
>
>[d] rn5r/p5p1/2p1k2p/8/4N3/R7/5PPP/4R1K1 w - - 0 7

7.Rd3! Kf7

   [7...a5 8.Nd6+ Kf6 9.Ne8+ Rxe8
      (9...Kf7 10.Rf3+ Kg8
         (10...Kg6 11.Rg3+ forces mate)
       11.Re7 Rh7 12.Nc7 +-)
    10.Rxe8 +-]

8.Ng5+! Kg6

   [8...hxg5 9.Rf3+ Kg6 10.Re6+ +-]

9.Rd6+! Kxg5 10.Re5+ Kf4 11.Rde6 Nd7

   [11...Rd8 12.g3+ Kf3 13.h3 Rd1+ 14.Re1 and mates]

12.g3+ Kf3 13.Re4 Rhf8 14.h3 and mates

• Re: some test positions (the usual everyday brilliancies, etc.) Uri Blass 13:19:23 12/09/02
  • Re: some test positions (the usual everyday brilliancies, etc.) Roy Eassa 15:25:22 12/09/02
  • Re: some test positions (the usual everyday brilliancies, etc.) Mike S. 15:12:53 12/09/02

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