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Subject: Pawn endgame test suite

Author: Peter McKenzie

Date: 01:31:09 10/07/00

I've been browsing 'Comprehensive Chess Endings, Pawn Endings' by Averbakh &
Maiselis, picking out a few interesting looking positions to test my program
with.  Here is the little test suite I came up with:

8/1p4kP/5pP1/3p4/8/4P3/7K/8 w - - bm e4; id "CCE4 479";
8/1pp5/3k3p/PP6/2P2K2/8/8/8 b - - bm Kd7; id "CCE 491a";
2k2K2/8/pp6/2p5/2P5/PP6/8/8 w - - bm a4; id "CCE4 530";
8/pp3p2/8/6kp/8/3K1PP1/PP6/8 b - - bm f5; id "CCE4 608";
8/pp2k1pp/2p5/2P1p3/2P1P2P/6P1/P7/2K5 b - - bm g5; id "CCE4 679";
8/1p6/p1p5/P1Pp2pp/1P1P1p1k/5P1P/6PK/8 w - - bm g3 g4; id "CCE 680";
8/1k6/p4p2/2p2P2/p1P2P2/2P5/P1K5/8 w - - bm Kc1; id "CCE 765";

Some of these are pretty hard, some are easy, and some are in between.  LambChop
gets 4/7 in under 15min/pos of P133 time.

The 5th position is cool, white threatens g4 to effectively lock the position
hence the temporary pawn sac g5! is the only winning move for black.

Would be interested to see how other programs do on these.  I can give more
details on the other positions if anyone is interested.

Not sure how much tablebases will help on these positions, I'd expect them to
help alot on the 2nd position but not so much on the rest.

cheers,
Peter

Re: Pawn endgame test suite José Antônio Fabiano Mendes 09:45:09 10/09/00
Re: Pawn endgame test suite allan johnson 23:47:13 10/07/00
- Re: Pawn endgame test suite allan johnson 23:53:03 10/07/00
More information + a couple of diagrams Peter McKenzie 12:16:17 10/07/00
- Re: More information + a couple of diagrams Ricardo Gibert 19:08:26 10/07/00
- Re: More information + a couple of diagrams Vincent Diepeveen 16:32:18 10/07/00
  - Re: More information + a couple of diagrams Peter McKenzie 19:51:43 10/07/00
    - Re: More information + a couple of diagrams Ricardo Gibert 20:45:01 10/07/00
      - Re: More information + a couple of diagrams Peter McKenzie 00:25:53 10/08/00
        
        Re: More information + a couple of diagrams Ricardo Gibert 01:01:59 10/08/00
  - Re: More information + a couple of diagrams Ricardo Gibert 19:29:44 10/07/00
    - Re: More information + a couple of diagrams Dave Gomboc 22:27:15 10/07/00
      - Re: More information + a couple of diagrams Ricardo Gibert 22:37:20 10/07/00
        
        Re: More information + a couple of diagrams Dave Gomboc 23:00:25 10/07/00
        
        Re: More information + a couple of diagrams Heiner Marxen 07:36:14 10/08/00
        
        Re: More information + a couple of diagrams Dave Gomboc 07:45:45 10/08/00
        
        Re: Thanks for the info (Was: More information + a couple of diagrams) Heiner Marxen 08:06:24 10/08/00
        
        Re: Thanks for the info (Was: More information + a couple of diagrams) Dave Gomboc 09:52:56 10/08/00
        
        Re: More information + a couple of diagrams Ricardo Gibert 23:07:37 10/07/00
        
        Re: More information + a couple of diagrams Dave Gomboc 23:57:15 10/07/00
        
        Re: More information + a couple of diagrams Ricardo Gibert 01:09:00 10/08/00
        
        Re: More information + a couple of diagrams Dave Gomboc 07:43:37 10/08/00
      - Re: More information + a couple of diagrams Dave Gomboc 22:31:22 10/07/00
  - Re: More information + a couple of diagrams martin fierz 18:58:06 10/07/00
  - Re: More information + a couple of diagrams Vincent Lejeune 18:45:03 10/07/00
    - Re: More information + a couple of diagrams Vincent Diepeveen 15:45:29 10/08/00
      - Re: More information + a couple of diagrams Vincent Lejeune 16:23:56 10/08/00
Really very difficult pawn endgames Vincent Lejeune 09:55:49 10/07/00
- Re: Really very difficult pawn endgames PGN's+solutions+diagrams Vincent Lejeune 10:09:11 10/07/00
Re: Pawn endgame test suite Jon Dart 08:00:30 10/07/00
Re: Pawn endgame test suite Vincent Diepeveen 07:41:27 10/07/00
- Re: Pawn endgame test suite martin fierz 11:49:16 10/07/00
  - Re: Pawn endgame test suite Peter McKenzie 12:24:57 10/07/00
Re: Pawn endgame test suite Dieter Buerssner 07:38:07 10/07/00
- Re: Pawn endgame test suite Aaron Tay 01:54:07 10/08/00
  - Re: Pawn endgame test suite Dieter Buerssner 05:02:39 10/08/00
  - Re: Pawn endgame test suite Jeremiah Penery 02:17:00 10/08/00
- Re: Endgame test suite Jim Monaghan 12:33:31 10/07/00
- Re: Pawn endgame test suite Dieter Buerssner 08:00:32 10/07/00
  - Re: Pawn endgame test suite Jeremiah Penery 10:59:59 10/07/00

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