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Subject: The Baron

Author: Richard Pijl

Date: 02:58:14 12/17/04

Go up one level in this thread


On December 16, 2004 at 13:50:26, paul bedrey wrote:

>Looking through a game between Shredder 8 and Junior 9 posted by Thomas Logan I
>came upon this critical point in the game:
>
>[D]5rk1/6q1/4r2p/1BPp1R2/P2Pn3/3Q2p1/4R1P1/6K1 w - - 0 43
>
>The game was roughly even up to move 43.
>Shredder 8 took the pawn at D5 and lost the game! How many other programs fall
>for this? Gambit Tiger immediately recognizes the mistake.

The Baron (Xeon-2.8, single CPU) requires less than a minute:

 ply       time        nodes   score  pv
  4(12)&   0:00.11     12136   +2.38  Rf5xd5 Qg7-f6 Qd3-f3 Qf6xf3 (g2xf3)
  4(12).   0:00.13     18416   +2.38  Rf5xd5 Qg7-f6 Qd3-f3 Qf6xf3 (g2xf3)
  5(13)&   0:00.20     38639   +2.50  Rf5xd5 Qg7-f7 Re2-e3 Qf7-f2 Kg1-h1
                                      Rf8-f4 Qd3-e2
  5(13).   0:00.23     49274   +2.50  Rf5xd5 Qg7-f7 Re2-e3 Qf7-f2 Kg1-h1
                                      Rf8-f4 Qd3-e2
  6(15)&   0:00.69    217495   +1.76  Rf5xd5 Qg7-f7 Re2-a2 Ne4xc5 Qd3xg3
                                      Re6-g6 Qg3-e5
  6(15).   0:00.91    283129   +1.76  Rf5xd5 Qg7-f7 Re2-a2 Ne4xc5 Qd3xg3
                                      Re6-g6 Qg3-e5
  7(16)&   0:01.64    495200   +1.52  Rf5xd5 Qg7-f7 Re2-a2 Ne4xc5 Qd3xg3
                                      Re6-g6 Qg3-e5 Nc5-e6
  7(16).   0:02.03    613911   +1.52  Rf5xd5 Qg7-f7 Re2-a2 Ne4xc5 Qd3xg3
                                      Re6-g6 Qg3-e5 Nc5-e6
  8(17)&   0:03.97   1183289   +1.50  Rf5xd5 Qg7-f7 Re2-c2 Ne4xc5 Qd3-d1
                                      Nc5-b3 Qd1-g4 Re6-g6 Qg4-h5
  8(17).   0:04.98   1501913   +1.50  Rf5xd5 Qg7-f7 Re2-c2 Ne4xc5 Qd3-d1
                                      Nc5-b3 Qd1-g4 Re6-g6 Qg4-h5
  9(19)&   0:15.97   4798188   +1.27  Rf5xd5 Qg7-g4 Bb5-d7 Re6-f6 Re2-e1
                                      Qg4-h4 Bd7-h3 Ne4-f2 Qd3-e2 Nf2xh3 g2xh3
                                      Qh4xh3 Qe2-g2
  9(19).   0:20.19   6137250   +1.27  Rf5xd5 Qg7-g4 Bb5-d7 Re6-f6 Re2-e1
                                      Qg4-h4 Bd7-h3 Ne4-f2 Qd3-e2 Nf2xh3 g2xh3
                                      Qh4xh3 Qe2-g2
 10(21)&   0:33.69  10228454   +1.17  Rf5xd5 Qg7-f7 Re2-c2 Qf7-f4 Bb5-c4
                                      Qf4-h4 Rd5-h5 Qh4xh5 Bc4xe6 Kg8-h8 Be6-h3
                                      Ne4-f2 Qd3-e2 Nf2xh3 (g2xh3) (Qh5xh3)
 10(22)&   0:51.64  15701858   +1.47  Rf5xf8 Qg7xf8 Bb5-d7 Re6-f6 Re2-e3
                                      Qf8-g7 c5-c6 Qg7-f7 Re3-f3 Rf6xf3 g2xf3
                                      h6-h5
 10(22).   0:53.47  16366617   +1.47  Rf5xf8 Qg7xf8 Bb5-d7 Re6-f6 Re2-e3
                                      Qf8-g7 c5-c6 Qg7-f7 Re3-f3 Rf6xf3 g2xf3
                                      h6-h5
 11(21)&   1:18.03  24177955   +1.14  Rf5xf8 Qg7xf8 Bb5-d7 Re6-e7 c5-c6
                                      Qf8-f4 Qd3-e3 Qf4-h4 Bd7-h3 Qh4-f6 Re2-c2
                                      Re7-c7
 11(21).   1:49.58  33865847   +1.14  Rf5xf8 Qg7xf8 Bb5-d7 Re6-e7 c5-c6
                                      Qf8-f4 Qd3-e3 Qf4-h4 Bd7-h3 Qh4-f6 Re2-c2
                                      Re7-c7
 12(25)&   2:16.95  42986634   +1.14  Rf5xf8 Qg7xf8 Bb5-d7 Re6-e7 c5-c6
                                      Qf8-f4 Qd3-e3 Qf4-h4 Bd7-h3 Qh4-f6 Re2-c2
                                      Re7-c7 Bh3-d7
 12(25).   2:38.47  49957076   +1.14  Rf5xf8 Qg7xf8 Bb5-d7 Re6-e7 c5-c6
                                      Qf8-f4 Qd3-e3 Qf4-h4 Bd7-h3 Qh4-f6 Re2-c2
                                      Re7-c7 Bh3-d7



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