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Subject: Re: Hard test position - Yace seems the best!

Author: Steve Maughan

Date: 08:48:50 12/08/03

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Mihaly,

>White wins.
>
>[D]8/p4p1P/P4P2/8/1p4p1/pP4Pp/2K4P/k7 w - - 0 1
>
>
>1. h8=N! a2 2. Ng6 fxg6 3. f7 g5 4. Kd3 Kb2 5. f8=B!

A tough one. I tested many engines (Anaconda, Crafty, Tiger 15, Junior 8, Fritz
8, Hiarcs 9, Shredder 7.04, Ruffian 1.0.5, Goliath Nemesis, List 5.04) and the
only one to solve within a minute was YACE.

Analysis by Yace Paderborn:

1.h8Q a2 2.Kd2 Kb2 3.Qb8 a1Q 4.Qxa7
  +-  (7.91)   Depth: 1   00:00:00
  ±  (1.37)   Depth: 4   00:00:00
1.h8N a2 2.Ng6 fxg6 3.f7 g5 4.f8Q
  +-  (4.18)   Depth: 4   00:00:00
  =  (0.00)   Depth: 6/13   00:00:00  2kN
1.h8Q a2 2.Kd3 Kb2 3.Qb8 a1Q 4.Qxa7 Qb1+ 5.Kc4 Qc2+ 6.Kxb4 Qxb3+ 7.Ka5 Qc3+
8.Kb6 Ka1 9.Qd7 Qxf6+ 10.Kc7 Qxa6 11.Qxg4 Qh6
  =  (0.04)   Depth: 6/13   00:00:00  2kN
  =  (0.14)   Depth: 18/36   00:00:31  27538kN
1.h8N a2 2.Ng6 fxg6 3.f7 g5 4.Kd3 Kb2 5.f8B a1Q 6.Bg7+ Kb1 7.Bxa1 Kxa1 8.Kc4 Kb1
9.Kxb4 Kb2 10.Kb5 Kxb3 11.Kc6 Kc4
  =  (0.15)   Depth: 18/36   00:00:31  27943kN
  ±  (0.84)   Depth: 20/37   00:00:58  51128kN

(Maughan, Paoli 08.12.2003, AMD XP2600 with 64 Mb Hash)

• Re: Hard test position - Yace seems the best! Mihaly Szalai 10:40:17 12/08/03
  • Re: Hard test position - Yace seems the best! Dieter Buerssner 10:52:17 12/08/03
    • Re: Hard test position - Yace seems the best! Mihaly Szalai 11:26:14 12/08/03
      • Re: Hard test position - Yace seems the best! Dieter Buerssner 11:43:28 12/08/03
      • Re: Hard test position - Yace seems the best! Dieter Buerssner 11:36:52 12/08/03
        • Re: Hard test position - Yace seems the best! Mihaly Szalai 11:41:54 12/08/03
    • Re: Hard test position - Yace seems the best! Richard Pijl 11:09:39 12/08/03
      • Re: Hard test position - Yace seems the best! Dieter Buerssner 11:14:16 12/08/03
  • Re: Hard test position - Yace seems the best! Luis Smith 10:50:01 12/08/03
    • Re: Hard test position - Yace seems the best! Mihaly Szalai 11:33:34 12/08/03

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