Author: Hans Havermann
Date: 20:38:20 05/04/99
Go up one level in this thread
On May 03, 1999 at 15:23:27, Jeremiah Penery wrote: >>18 f5! hxg5 >>19 f6 gxf6 >>20 Ne4 Rfd8 >>21 Nxf6+ Qxf6 >>22 Rxf6 Nd7 >>23 Bxg5 Nxf6 >>24 Bxf6 Kf8 >>25 Qh5 Ke8 >>26 Rf1 resigns >>It would seem obvious that White is winning within a 9-ply search, >>so why doesn't any program find it? >Well, I tried one of my modified Crafties on it as you asked :), and it was not >found in a 14 ply search. (3 hours?) It liked N5e4 with a score of about +0.5. MacChess (5.0.1) likes N5e4 at several points in its analysis but (finally) gives f5 a slight advantage at 16-ply. 57 and a half hours on a 300 MHz G3. Almost 60 billion nodes. Here's the full analysis: 07/01|00:00:02| 272200| -4| N5e4 Rad8 a4 Rd4 b3 Rfd8 Bb2 07/04|00:00:02| 431454| -2| Nf3 Rad8 Bd2 Bb4 Rfd1 Bxd2 Rxd2 Nc5 08/01|00:00:04| 806994| -3| Nf3 Rad8 Bd2 Rd7 Ba5 Rfd8 Bxb6 Bxb6 Rfd1 08/02|00:00:06| 1455056| -2| N5e4 Rad8 b3 Nb4 Nxc5 Qxc5 Be3 Qa5 Ne4 09/01|00:00:11| 2953675| -2| N5e4 Rad8 Bd2 Bd4 Ba5 Rd7 Bxb6 Bxb6 Rfd1 Rfd8 09/02|00:00:15| 3956141| -1| Nf3 Rad8 Bd2 Nb4 Bxb4 Bxb4 Rad1 Rfe8 b3 a6 10/01|00:00:27| 7271613| -2| Nf3 Rad8 Bd2 Rd7 a4 Rfd8 a5 Nc8 Rfd1 Nb4 10/02|00:02:22| 39571574| +1| N5e4 Bd4 Rd1 Rad8 Nd6 Bc5 Nge4 Nc8 Nxc5 Nxc5 b4 11/01|00:06:53| 114045591| +2| N5e4 Bd4 Rd1 Rad8 Nd6 Bc5 Nge4 Qc7 Be3 Bxe3 Qxe3 Nb4 12/01|00:14:57| 248150713| +4| N5e4 Bd4 Rd1 c5 a4 Nb4 a5 Nc8 Rb1 Rd8 Be3 b6 12/02|00:23:14| 389674377| +5| Nf3 Nc7 Ne4 Na6 Rd1 Rad8 Bd2 Nb4 Bxb4 Bxb4 a3 Ba5 b4 13/01|00:37:58| 610102770| +5| Nf3 Nc7 Ne4 Rfd8 Nxc5 Qxc5 b3 Qe7 Be3 Nd7 Rfd1 b6 a4 Nc5 13/02|03:30:13| 3170277195| +6| N5e4 Qc7 Nxc5 Nxc5 Rd1 Rad8 Be3 Ncd7 a4 a5 Bd2 Nc8 b3 Ne7 14/01|10:15:37| 9495284968| +17| N5e4 Nd7 f5 f6 exf6 Nxf6 Nxc5 Nxc5 b4 Na6 b5 cxb5 cxb5 Nc5 Re1 Rae8 15/01|23:11:01| 22296019748| +39| N5e4 Nd7 f5 f6 exf6 Nxf6 Nxc5 Nxc5 b4 Na6 Qxe6+ Qxe6 fxe6 Nxb4 Rb1 Nxa2 e7 Rfb8 Bxh6 16/01|34:57:24| 35199888669| +39| N5e4 Nd7 f5 f6 exf6 Nxf6 Nxc5 Nxc5 b4 Na6 Qxe6+ Qxe6 fxe6 Nxb4 Rb1 Nxa2 e7 Rfb8 Bxh6 16/29|57:35:56| 59887647467| +43| f5 hxg5 f6 Qc7 fxg7 Kxg7 Nh5+ Kh7 Bxg5 f5 Nf6+ Rxf6 Qh5+ Kg8 exf6 Qf7 Qh4 Nb4 Rfd1 e5
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