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Subject: Re: (1) Nice move by Sjeng (2) Horrible move by Sjeng

Author: Gian-Carlo Pascutto

Date: 05:15:26 08/14/02

Go up one level in this thread


On August 14, 2002 at 07:23:46, Andrew Williams wrote:

>Yesterday PM and Sjeng played a game in which Sjeng found Nxc5! in this
>position:
>
>[D]5nk1/r1q1b2p/1Np1p1p1/p1Pp1p2/Q2Pn3/P3PN2/5PPP/1R2B1K1 b - - 0 26 bm Nxc5
>
>This took 27 seconds on GCP's AMD Athlon XP 1800, albeit with the benefit of
>populated hash tables.

0.68 seconds with clean hash, actually :)

Sjeng: go
Middlegame phase.
Time for move : 1000000
 2     -65    14      395  Bf6 Bxa5 (0)
 3     -57    14     2640  Bf6 Rb3 e5 Bxa5 (0)
 3     -57    15     7993  Bf6 Rb3 e5 Bxa5 (0)
 4     -57    15    10166  Bf6 Rb3 e5 Bxa5 (0)
 4     -39    18    23604  g5 Ne5 Nxc5 dxc5 Qxe5 Qxc6 (0)
 4     -39    19    24167  g5 Ne5 Nxc5 dxc5 Qxe5 Qxc6 (0)
 5     -24    22    42981  g5 h3 g4 hxg4 fxg4 Ne5 (0)
 5     -24    24    55744  g5 h3 g4 hxg4 fxg4 Ne5 (0)
 6     -16    31    85907  g5 h3 g4 hxg4 fxg4 Ne5 Bxc5 Bxa5 (0)
 6     -16    34   111833  g5 h3 g4 hxg4 fxg4 Ne5 Bxc5 Bxa5 (0)
 7     -16    48   184154  g5 h3 g4 hxg4 fxg4 Ne5 Bxc5 Bxa5 (0)
 7      20    68   296468  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Nxb6 Nxe6 (0)
 7      20    70   306338  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Nxb6 Nxe6 (0)
 8      20    85   434664  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Nxb6 Nxe6 (0)
 8      20    97   511395  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Nxb6 Nxe6 (0)
 9      20   135   766260  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Nxb6 Nxe6 (0)
 9      20   160   887881  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Nxb6 Nxe6 (0)
10      30   271  1605581  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Bxb6 Nxe6 Qe5 (0)
10      30   318  1958225  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Bxb6 Nxe6 Qe5 (0)
11      57   590  3742804  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Bxb6 Nxe6 Qe5
Bxb6 Qxe6 (0)
11      57   726  4531046  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Bxb6 Nxe6 Qe5
Bxb6 Qxe6 (0)
12      70  1208  7840476  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Bxb6 Nxe6 Qe5 Nd4
Nc5 (0)
12      70  1417  9355028  Nxc5 dxc5 Bxc5 Qb3 Rb7 Bxa5 Nd7 Nd4 Bxb6 Nxe6 Qe5 Nd4
Nc5 (0)


>The game changed completely after 38..Nd6??, which loses to Be7. The full game
>follows:

Current version can't avoid this even at tournament timecontrols:

Sjeng: go
Endgame phase.
Time for move : 10000000
 2      92     0      113  c5 ??
 2    -532     0      986  c5 Qe8+ Kg7 Qe5+ Kg8 Qxd5+ Kg7 Qxb7+ Kg8 (0)
 2    -371     0     1674  Qa2 Qe6+ Kg7 Qe7+ Kg8 Qxb7 (0)
 2     -71     0     2288  Qb2 Qe6+ Kg7 Qxc6 (0)
 2       0     1     3254  Qa6 Qe8+ Kg7 Qe7+ Kg8 Qe8+ (0)
 2      32     1     3586  Qc5 Qe6+ Kg7 Bf6+ Kh6 (0)
 2      76     1     3787  Qd6 Qe5 (0)
 3      61     1     4967  Qd6 Qe8+ Kg7 Qe5+ Qxe5 fxe5 c5 (0)
 3      61     1     5980  Qd6 Qe8+ Kg7 Qe5+ Qxe5 fxe5 c5 (0)
 4      40     2     8808  Qd6 Qe8+ Kg7 Qe5+ Qxe5 fxe5 Kf7 f3 (0)
 4      86     3    14147  Nd6 Bf6 Ne4 Bd4 (0)
 4      86     3    14603  Nd6 Bf6 Ne4 Bd4 (0)
 5      91    10    48625  Nd6 f5 Ne4 Bc1 Qd3 fxg6 hxg6 (0)
 5      91    12    53870  Nd6 f5 Ne4 Bc1 Qd3 fxg6 hxg6 (0)
 6      55    33   162567  Nd6 Be7 Kf7 h3 d4 Qe5 <Qa1+> (0)
 6      55    41   202709  Nd6 Be7 Kf7 h3 d4 Qe5 <Qa1+> (0)
 7      68    51   262817  Nd6 Be7 Kf7 h3 d4 Qe5 Qc1+ Kh2 (0)
 7      68    57   299140  Nd6 Be7 Kf7 h3 d4 Qe5 Qc1+ Kh2 (0)
 8      68    84   452252  Nd6 Be7 Kf7 h3 d4 Qe5 Qc1+ Kh2 Nc4 (0)
 8      68   112   608784  Nd6 Be7 Kf7 h3 d4 Qe5 Qc1+ Kh2 Nc4 (0)
 9      49   308  1712493  Nd6 Qe6+ Nf7 h4 Qc3 f5 Qa1+ Kh2 Qe5+ Qxe5 Nxe5 fxg6
hxg6 Kg3 (0)
 9      49   400  2202357  Nd6 Qe6+ Nf7 h4 Qc3 f5 Qa1+ Kh2 Qe5+ Qxe5 Nxe5 fxg6
hxg6 Kg3 (0)
10      52   860  4706667  Nd6 Qe6+ Nf7 h4 Qa8 Bf6 c5 f5 d4 fxg6 Qa1+ Kh2 hxg6
(0)
10      52  1052  5736917  Nd6 Qe6+ Nf7 h4 Qa8 Bf6 c5 f5 d4 fxg6 Qa1+ Kh2 hxg6
(0)
11      42  2294 12450582  Nd6 Qe6+ Nf7 h4 Qa1+ Kh2 Qa8 f5 gxf5 Qxf5 c5 f4 c4
Bf6 (0)
11      42  3122 16634564  Nd6 Qe6+ Nf7 h4 Qa1+ Kh2 Qa8 f5 gxf5 Qxf5 c5 f4 c4
Bf6 (0)
12      27  6561 34668520  Nd6 Qe6+ Nf7 h4 Qa8 Bf6 c5 f5 d4 Be7 d3 Bxc5 Qa1+ Kh2
(0)
12      27 12313 62193863  Nd6 Qe6+ Nf7 h4 Qa8 Bf6 c5 f5 d4 Be7 d3 Bxc5 Qa1+ Kh2
(0)
13       0 23518 117818827  Nd6 Qe6+ Nf7 h4 Qa1+ Kh2 Qa8 f5 gxf5 Bf6 Qb8+ Kg1
Qb1+ Kh2 Qb8+ (0)
13       0 39465 193529292  Nd6 Qe6+ Nf7 h4 Qa1+ Kh2 Qa8 f5 gxf5 Bf6 Qb8+ Kg1
Qb1+ Kh2 Qb8+ (0)

After Nd6 Be7:
Sjeng: go
Endgame phase.
Time for move : 10000000
 2      81     0      202  d4 ??
 2    -372     0      629  d4 Qe6+ Kg7 Qf6+ Kg8 Bxd6 (0)
 2    -369     0      786  Qb2 Bxd6 (0)
 2    -361     0      929  Qd3 Bxd6 (0)
 2    -331     0     1158  c5 Bxd6 (0)
 2      36     0     1471  Kf7 Qe5 (0)
 3      85     0     2075  Kf7 Bxd6 Qxd6 Qc3 (0)
 3      85     1     3360  Kf7 Bxd6 Qxd6 Qc3 (0)
 4      55     2     6897  Kf7 h3 d4 Qe5 (0)
 4      55     3    11479  Kf7 h3 d4 Qe5 (0)
 5      68     4    17589  Kf7 h3 d4 Qe5 Qc1+ Kh2 (0)
 5      68     5    21299  Kf7 h3 d4 Qe5 Qc1+ Kh2 (0)
 6      68     9    36450  Kf7 h3 d4 Qe5 Qc1+ Kh2 Nc4 (0)
 6      68    11    46822  Kf7 h3 d4 Qe5 Qc1+ Kh2 Nc4 (0)
 7      77    19    97735  Kf7 h3 d4 Qe5 Qc1+ Kh2 Nc4 Qf6+ Ke8 (0)
 7      77    23   124535  Kf7 h3 d4 Qe5 Qc1+ Kh2 Nc4 Qf6+ Ke8 (0)
 8      87    70   405751  Kf7 h4 d4 h5 d3 hxg6+ hxg6 Qe5 Qc1+ Kh2 Nc4 (0)
 8      87   556  2808067  Kf7 h4 d4 h5 d3 hxg6+ hxg6 Qe5 Qc1+ Kh2 Nc4 (0)
 9      68   700  3478867  Kf7 h4 d4 Qe5 Qc1+ Kh2 Nf5 Qf6+ Ke8 Qf8+ Kd7 Bg5 c5
Qf7+ Kd6 Qxh7 (0)
 9      68   740  3696457  Kf7 h4 d4 Qe5 Qc1+ Kh2 Nf5 Qf6+ Ke8 Qf8+ Kd7 Bg5 c5
Qf7+ Kd6 Qxh7 (0)
10      32   931  4622689  Kf7 h4 d4 Qe5 Qc1+ Kh2 Nf5 Bc5 d3 Qc7+ Ke6 Qxc6+ Kf7
g3 (0)
10      32  4152 19606361  Kf7 h4 d4 Qe5 Qc1+ Kh2 Nf5 Bc5 d3 Qc7+ Ke6 Qxc6+ Kf7
g3 (0)
11      -6  4722 22482160  Kf7 h4 Qc5 Qe5 Qc1+ Kh2 Nf5 Qf6+ Ke8 Qf8+ Kd7 Bg5 Qc2
Qd8+ Ke6 Qf6+ Kd7 Qh8 Ke6 Qxh7 (0)
11      -6  8408 39636758  Kf7 h4 Qc5 Qe5 Qc1+ Kh2 Nf5 Qf6+ Ke8 Qf8+ Kd7 Bg5 Qc2
Qd8+ Ke6 Qf6+ Kd7 Qh8 Ke6 Qxh7 (0)
12     -56  9608 45660257  Kf7 ??
12     -95 19417 94239962  Kf7 g4 Qa7 Bxd6 Qd7 Be5 Qxg4+ Kf1 Qf3 Qd2 Qh1+ Ke2
Qe4+ Qe3 Ke6 Qxe4 dxe4 Ke3 (0)
12     -95 32122 152378983  Kf7 g4 Qa7 Bxd6 Qd7 Be5 Qxg4+ Kf1 Qf3 Qd2 Qh1+ Ke2
Qe4+ Qe3 Ke6 Qxe4 dxe4 Ke3 (0)

--
GCP



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