Computer Chess Club Archives

Search

Messages

Subject: Re: 24 interesting endgame positions

Author: Ernst A. Heinz

Date: 11:25:08 10/12/98

Go up one level in this thread

On October 12, 1998 at 01:23:51, Jouni Uski wrote:

>These positions are from different magazines and books. Sorry, but format
>is Mchess7 "EPD".
>
>k7/8/2p5/4P3/4B3/6p1/8/2n3K1 w - - id "Bd3";
>k1N5/2p5/8/1P6/8/8/7K/8 w - - id "Nb6+";
>2n5/kP6/8/K7/4B3/8/8/8 w - - id "bxc8N+";
>8/3Np3/7P/1p3P2/1k6/5K2/1b6/8 w - - id "f6";
>2r5/2pR1pk1/p1P3p1/P2K4/5P1p/5P1P/8/8 w - - id "Rxc7";
>8/1p5k/p1p4n/P6P/1P4N1/8/6K1/8 w - - id "Nxh6";
>8/6pk/1p6/8/PP3p1p/5P2/4KP1q/3Q4 w - - id "Qf1";
>8/2b2pp1/K2p4/p4P2/P7/6P1/8/2k3B1 w - - id "f6";
>8/4k3/8/6r1/1KP5/8/8/7R w - - id "Rd1";
>8/4kp2/4p1p1/2p1r3/PpP5/3R4/1P1K1PP1/8 w - - id "g4";
>3k4/3q4/8/4Q3/5P2/6K1/8/8 b - - id "Qe7";
>8/k7/8/2R5/8/4q3/8/4B2K w - - id "Bg3";
>8/8/2N4p/p5kP/P1K5/1P6/8/4b3 w - - id "Nxa5";
>8/8/pp6/3b2K1/1P6/PN2k3/8/8 w - - id "Na5";
>3R4/2N2p1p/5kp1/r7/pb6/4P1P1/5P1P/6K1 b - - id "a3";
>8/6Q1/p3r2p/3k3K/6P1/8/8/8 w - - id "Qxh7";
>8/7p/3k2p1/6P1/4KP2/8/7P/8 w - - id "h4";
>8/2p5/8/2kPKp1p/2p4P/2P5/3P4/8 w - - id "d6";
>7K/k7/8/P7/6pP/8/8/8 w - - id "a6";
>8/pKR5/8/p7/8/8/2p5/2k5 w - - id "Kb8";
>k7/7K/NR6/8/7p/6p1/p7/8 w - - id "Nb8";
>8/8/5p2/5p2/5P2/3p3B/5k1P/3K4 w - - id "Bg2";
>8/1p6/4p3/1K2k3/8/P7/8/8 w - - id "Kc5";
>4kr2/R4p2/6p1/8/1K6/3B4/8/8 w - - id "Bf5";
>
>How many solves your program? For comparison Mchess7 10 min/pos in P90:
>solved 18/24.

Dear Jouni,

Thank you very much for collecting and posting the positions.

With the help of its interior-node recognizers and its endgame databases
"DarkThought" solves 23/24 at 60 sec. per move on a 600MHz Alpha-21164a.

The only position it does not solve is the following.

> svfe k7/7K/NR6/8/7p/6p1/p7/8 w - -
> srch Nb8

Here, "DarkThought" suggests to play Nb4 which it evaluates as a draw.
If Nb8 also leads to a draw, "DarkThought" might have found a second
possible solution.

=Ernst=

• Re: 24 interesting endgame positions Bruce Moreland 11:37:18 10/13/98
  • Re: 24 interesting endgame positions Ernst A. Heinz 12:02:12 10/13/98
• Re: 24 interesting endgame positions Howard Exner 16:26:21 10/12/98
  • Re: 24 interesting endgame positions Ernst A. Heinz 01:52:21 10/13/98
    • Re: 24 interesting endgame positions Vincent Lejeune 10:00:06 10/13/98
      • Re: 24 interesting endgame positions Howard Exner 08:05:30 10/14/98
• Re: 24 interesting endgame positions blass uri 13:05:53 10/12/98

This page took 0.01 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.