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Subject: Re: A Mate in 9 position, plus some 'interesting' timings...

Author: Hans Havermann

Date: 16:41:44 05/18/99

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On May 16, 1999 at 22:22:06, Richard A. Fowell (fowell@netcom.com) wrote:

> MacChess 5.01         02:54 (Mac 604e/180)

   MacChess 5.01         01:22 (Mac G3/300)

===== Log file information =============================================

MacChess 5.01, 32Mb hash, setting "infinite", G3/300

2n2r1k/1rqp2p1/2pR1p1p/1bP1p3/pP5R/P3P3/BB3PPP/3Q2K1 w - -

06/41|00:00:01|      263852| +298| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Ne7 Rxf8
07/01|00:00:02|      403485| +292| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Ne7 Rxf8 d5
08/01|00:00:03|      851121| +376| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Bd3 Rxf8 Bg6
Bxe5 Qxe5 Rxc8
09/01|00:00:07|     1939635| +379| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Bd3 Rxf8 Bg6
Qd1 Kg7 Bxe5+ Qxe5 Rxc8
10/01|00:00:36|    11931402|+M10  | Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Bb1+ Bd3 Bxd3+
Kh8 Qh5 e4 Qxh6+ Kg8 Bc4+ Rf7 Bxf6 Nxd6 Qg7+
11/01|00:01:22|    26800749|+M9  | Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Bb1+ Bd3 Bxd3+
Kh8 Qg6 e4 Bxe4 Rf7 Bxf6+ Rxf6 Qh7+

By the way, with a 64Mb hash, it actually does worse than your 604e/180 to find
an M9:

===== Log file information =============================================

MacChess 5.01, 64Mb hash, setting "infinite", G3/300

2n2r1k/1rqp2p1/2pR1p1p/1bP1p3/pP5R/P3P3/BB3PPP/3Q2K1 w - -

06/41|00:00:01|      263852| +298| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Ne7 Rxf8
07/01|00:00:02|      403523| +292| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Ne7 Rxf8 d5
08/01|00:00:03|      849655| +376| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Bd3 Rxf8 Bg6
Bxe5 Qxe5 Rxc8
09/01|00:00:07|     1929963| +379| Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Bd3 Rxf8 Bg6
Qd1 Kg7 Bxe5+ Qxe5 Rxc8
10/01|00:00:39|    12499091|+M11  | Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Bb1+ Kh8 Qh5 Bd3
Qxh6+ Kg8 Ba2+ Bc4 Bxc4+ Rf7 Bxf7+ Kxf7 Rxf6+ Kg8 Rf8+
11/01|00:01:27|    27845852|+M10  | Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Bb1+ Kh8 Qh5 Bd3
Bxd3 e4 Qxh6+ Kg8 Bc4+ Rf7 Bxf6 Nxd6 Qg7+
12/01|00:03:11|    59527000|+M9  | Rxh6+ gxh6 Qh5 Kg7 Qg4+ Kh7 Rxf6 Bd3 Rxf8 Bg6
Bg8+ Kg7 Rf7+ Kh8 Qxg6 Rxb4 Rh7+



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