Author: Dann Corbit
Date: 17:21:29 07/21/05
Go up one level in this thread
On July 21, 2005 at 17:23:41, Drexel,Michael wrote:
>[D]r2qk2r/pp3ppp/2pp1n2/2b5/B2nP1b1/2NN4/PPPP1PPP/R1B1QRK1 b kq - 0 9
>
>This position is from a game played in 1908.
>It should be a "no brainer" for the programs since it is a tactical position and
>black is able to force a completely won position after only 7 ply.
>
>It is a tough position for most programs however since there is a quiet move in
>the mainline. Only my Chessmaster found the solution quickly
>(as expected,~1min), others including Shredder struggle big time here.
>
>Michael
Other solvers:
Analysis from E:\nf3+.epd
7/21/2005 4:35:07 PM Level: Infinite
Analyzing engine: Glaurung
1) Nf3+;
Searching move: Nd4-f3
Best move (Glaurung): Nd4-f3
identical moves! Found in: 06:41
2 00:00 572 0 -0.89 Bc5b6 f2f4
3 00:00 1.470 0 -1.60 Bc5b6 e4e5 d6xe5 Nd3xe5
3 00:00 1.768 0 -0.98 b7b6 Nd3xc5 b6xc5
3 00:00 1.862 0 -0.89 Qd8b6 Nd3xc5 Qb6xc5
4 00:00 2.930 0 -1.46 Qd8b6 e4e5 d6xe5 Nd3xe5
4 00:00 5.306 0 -0.92 Nf6d7 b2b4 Bc5b6 Bc1b2
5 00:00 9.892 618.250 -0.86 Nf6d7 h2h3 Bg4e6 Nd3xc5 Nd7xc5
6 00:00 29.599 469.825 -1.32 Nf6d7 e4e5 d6xe5 Nd3xc5 Nd7xc5 Qe1xe5+
Nc5e6
6 00:00 38.747 412.202 -1.03 Qd8b6 e4e5 d6xe5 Qe1xe5+ Bc5e7 Rf1e1
Bg4e6
6 00:00 43.903 467.053 -1.01 Bc5b6 e4e5 d6xe5 Nd3xe5 00 Ne5xg4
Nf6xg4
7 00:00 62.155 440.815 -1.01 Bc5b6 e4e5 d6xe5 Nd3xe5 00 Ne5xg4
Nf6xg4
8 00:00 86.824 427.704 -1.19 Bc5b6 e4e5 d6xe5 Nd3xe5 00 Ne5xg4
Nf6xg4 d2d3
8 00:00 130.181 415.913 -1.17 Nf6d7 e4e5 d6d5 Nc3xd5 Bg4e2 Nd5f4
Be2xf1 Qe1xf1
8 00:01 247.634 427.692 -1.07 00 Nd3xc5 d6xc5 h2h3 Bg4h5 e4e5 Rf8e8
d2d3
9 00:01 389.698 429.656 -1.03 00 Nd3xc5 d6xc5 f2f3 Bg4e6 e4e5 Nf6d5
d2d3 Rf8e8
9 00:01 439.626 432.702 -0.96 Nf6d7 e4e5 d6d5 Nc3xd5 Bg4e2 Nd5f4
Be2xf1 Qe1xf1 Qd8h4 Nd3xc5 Nd7xc5
9 00:01 625.404 434.912 -0.72 b7b5 Ba4b3 Nf6d7 Nd3xc5 Nd7xc5 f2f3
Nc5xb3 c2xb3 Bg4e6
10 00:02 741.302 431.240 -0.75 b7b5 Ba4b3 Nf6d7 Nd3xc5 Nd7xc5 Qe1e3
Nc5xb3 c2xb3 Qd8f6 f2f4
11 00:04 1.711.203 426.096 -0.73 b7b5 Ba4b3 Nf6d7 e4e5 00 Nc3e4 Rf8e8
Nd3xc5 Nd7xc5 Ne4xc5 Nd4e2+ Kg1h1 d6xc5
12 00:05 2.304.927 425.106 -0.73 b7b5 Ba4b3 Nf6d7 e4e5 00 Nc3e4 Rf8e8
Nd3xc5 Nd7xc5 Ne4xc5 Nd4e2+ Kg1h1 d6xc5
13 00:16 6.482.120 413.163 -0.73 b7b5 Ba4b3 Nf6d7 e4e5 00 Nc3e4 Rf8e8
Nd3xc5 Nd7xc5 Ne4xc5 d6xc5 Qe1e4 Qd8h4
14 00:37 15.466.740 413.803 -0.34 b7b5 Ba4b3 Nf6d7 e4e5 00 Kg1h1 d6xe5
f2f3 Bg4f5 Nd3xc5 Nd7xc5 Qe1xe5 Nc5xb3 c2xb3
15 01:38 39.435.877 400.852 -0.21 b7b5 Ba4b3 Nf6d7 e4e5 00 Kg1h1 d6xe5
Nd3xe5 Nd4xb3 a2xb3 Nd7xe5 Qe1xe5 Bc5d6 Qe5d4 Qd8d7
16 02:22 57.762.471 406.981 -0.17 b7b5 Ba4b3 Nf6d7 e4e5 00 Kg1h1 d6xe5
Nd3xc5 Nd7xc5 Qe1xe5 Nc5xb3 c2xb3 Rf8e8 Qe5f4 Nd4c2 Ra1b1
16 06:41 152.539.432 380.468 +0.42 Nd4f3+ g2xf3 Bg4xf3 h2h3 Nf6g4 Nd3f4
Qd8g5 Nc3d5 Ng4e3+ Kg1h2 Ne3xf1+ Qe1xf1 00 d2d4 Bc5xd4 Nf4g6 Bd4e5+ Ng6xe5
Qg5xe5+ Nd5f4 Qe5xe4 c2c4
7/21/2005 5:05:37 PM, Time for this analysis: 00:10:00, Rated time: 06:41
1 of 1 matching moves
7/21/2005 5:05:38 PM, Total time: 12:30:30 AM
Rated time: 06:41 = 401 Seconds
--------------------------------------------------------------------------------
Analysis from E:\nf3+.epd
7/21/2005 4:35:07 PM Level: Infinite
Analyzing engine: Gandalf60
1) Nf3+;
Searching move: Nd4-f3
Best move (Gandalf60): Nd4-f3
identical moves! Found in: 02:26
4/15+ 00:02 21.202 212.020 -0.70 Nf6d7 Nd3xc5
4/15 00:02 22.193 221.930 -0.32 Nf6d7 Nd3xc5 Nd7xc5 Qe1e3 Qd8f6
5/16 00:02 31.114 155.570 -0.48 Nf6d7 Nd3xc5 Nd7xc5 Qe1e3 Nc5xa4
Qe3xd4 Na4xc3 d2xc3
6/16 00:02 62.942 314.710 -0.83 Nf6d7 Nd3xc5 Nd7xc5 Qe1e3 Qd8f6 Nc3d5
6/19+ 00:02 99.427 331.423 -0.83 Bc5b6 e4e5
6/19 00:02 107.662 358.873 -0.25 Bc5b6 e4e5 d6xe5 Qe1xe5+ Nd4e6 Nc3e4
Nf6xe4 Qe5xe4 Qd8h4
7/21- 00:02 152.408 381.020 -0.67 Bc5b6 e4e5 d6xe5 Qe1xe5+ Nd4e6 Nc3e4
Nf6xe4 Qe5xe4 Qd8h4
7/21 00:02 170.435 340.870 -0.70 Bc5b6 e4e5 d6xe5 Qe1xe5+ Nd4e6 Nc3e4
00 Ne4xf6+ Qd8xf6 Qe5xf6 g7xf6 Rf1e1
8/23 00:02 440.146 400.132 -0.41 Bc5b6 e4e5 d6xe5 Qe1xe5+ Nd4e6 Nc3e4
00 Ne4xf6+ Qd8xf6 Qe5xf6 g7xf6 Rf1e1 Rf8e8
8/23+ 00:03 499.139 415.949 -0.41 b7b5 e4e5
8/23+ 00:03 523.278 402.521 -0.16 b7b5 Nd3xc5
8/27 00:03 649.714 406.071 -0.09 b7b5 e4e5 00 Nd3xc5 d6xc5 f2f3 b5xa4
e5xf6 Nd4xc2
9/27 00:03 830.988 415.494 -0.25 b7b5 e4e5 00 Nd3xc5 d6xc5 Ba4b3 Rf8e8
d2d3 b5b4 f2f3 b4xc3 f3xg4 Nd4xb3 a2xb3 Nf6xg4
10/27 00:06 1.956.893 434.865 -0.06 b7b5 Ba4b3 Nf6d7 Nd3xc5 Nd7xc5 f2f3
Nc5xb3 a2xb3 Bg4xf3 Qe1g3 Nd4xc2 Qg3xg7
10/32+ 00:07 2.255.901 425.641 -0.06 Bc5b6 e4e5
10/32+ 00:08 2.606.528 427.299 +0.12 Bc5b6 e4e5
10/32 00:08 2.761.556 424.854 -0.19 Bc5b6 e4e5 00 h2h3 Bg4h5 Nd3f4 d6xe5
Nf4xh5 Nf6xh5 Qe1xe5 Nh5f6
11/34+ 00:10 3.935.461 447.211 +0.12 Bc5b6 e4e5
11/34 00:20 8.135.017 437.366 +0.32 Bc5b6 a2a3 00 Nd3f4 Nf6d7 d2d3 Nd7c5
Bc1e3 Nc5xa4 Be3xd4 Bb6xd4 Nc3xa4
12/39 00:40 16.828.150 440.527 +0.41 Bc5b6 h2h3 Bg4xh3 Nd3f4 Bh3g4 d2d3 00
Bc1e3 Rf8e8 f2f3 Nd4f5 Be3xb6 Qd8xb6+ Kg1h1
13/39- 00:51 22.459.096 449.180 +0.06 Bc5b6 h2h3 Bg4xh3 Nd3f4 Bh3g4 d2d3
00 Bc1e3 Rf8e8 f2f3 Nd4f5 Be3xb6 Qd8xb6+ Kg1h1
13/44 01:00 25.965.969 443.105 +0.12 Bc5b6 Nd3f4 Nf6d7 Kg1h1 Nd7c5 f2f3
Bg4e6 Qe1g3 00 Nf4h5 g7g6 d2d3 Nc5xa4 Nc3xa4 Nd4xc2 Na4xb6 Qd8xb6
14/46 01:31 41.166.328 457.403 +0.25 Bc5b6 Nd3f4 Nf6d7 Kg1h1 Nd7c5 f2f3
Bg4d7 Qe1g3 Rh8g8 Nf4h5 Nc5xa4 Nc3xa4 Nd4xc2 Na4xb6 a7xb6 Ra1b1 g7g6
14/46+ 02:26 65.160.263 450.001 +0.25 Nd4f3+ g2xf3
14/46+ 02:47 73.284.084 442.269 +0.57 Nd4f3+ g2xf3
14/46+ 03:16 84.495.511 433.310 +1.02 Nd4f3+ g2xf3
14/47 03:41 96.751.370 440.981 +0.28 Nd4f3+ g2xf3 Bg4xf3 e4e5 00 e5xd6
Nf6g4 Nd3e5 Rf8e8 Ne5xf3 Re8xe1 Nf3xe1 Qd8xd6 Ne1f3 Ra8e8 d2d3 Bc5d4
15/47+ 04:47 123.979.579 434.558 +0.67 Nd4f3+ g2xf3
15/49+ 06:09 159.785.120 435.263 +1.05 Nd4f3+ g2xf3
15/49 06:57 180.491.203 434.395 +1.28 Nd4f3+ g2xf3 Bg4xf3 e4e5 00 e5xf6
Qd8xf6 Nc3e4 Qf6h4 Ne4g3 Rf8e8 b2b4 Re8xe1 Nd3xe1 Qh4xb4 Ne1xf3 Qb4xa4 d2d4
Bc5xd4 Nf3xd4 Qa4xd4 Bc1e3 Qd4g4
7/21/2005 5:15:49 PM, Time for this analysis: 00:10:00, Rated time: 02:26
1 of 1 matching moves
7/21/2005 5:15:50 PM, Total time: 12:40:42 AM
Rated time: 02:26 = 146 Seconds
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