Author: Heiner Marxen
Date: 10:26:09 12/27/02
Go up one level in this thread
On December 27, 2002 at 09:12:09, Rex wrote:
>How fast can your program find the mate.
>
>CM9000 running my personal settings finds it in 4.1sec on a 1.5sGhz.
>
>[D]1r2q2k/2r2R1p/6pN/4p1P1/4Q3/1p1P4/1P5P/7K w - - 0 1
This is not so hard, even for Chest: on an Athlon 1500+ in 66 seconds it
finds the mate in 8 (Rxc7 is the only key move):
PV: Rxc7 Rb5 Qf3 Rb6 Rf7 Rc6 Rf8+ Kg7 Qf7+ Qxf7 Rxf7+ Kh8 Rf8+ Kg7 Rg8#
and after 94 seconds produces this depth restricted part of the complete
solution tree:
Rxc7 Qb5 Qf3 Qa6 Ng4 ...+5
Qf6+ ...+5
Qf7 ...+5
Qb6 Qf7 ...+4
Qb7 Qxb7 ...+2
Rxb7 ...+2
Qc6 Rxc6 ...+2
Qd5 Qxd5 ...+2
Qd7 Qf6+ ...+1
Rg8 Qf6+ ...+1
Rb6 Qf8#
Rb7 Qf6#
Qf8#
Rf8 Qxf8#
-*- Qf6#
Qe6 Kg2 Qe8 Qd5 ...+5
Qf3 ...+5
Rd8 Qf3 ...+5
Qd6 Nf7+ ...+4
Qb7 ...+4
Re8 Qb7 ...+4
Rf8 Qb7 ...+4
Rg8 Nf7+ ...+4
Nxg8 ...+4
Qb7 ...+4
Qc6 Qxc6 ...+3
Rxc6 ...+3
Qf5 Nxf5 ...+3
Qf6 gxf6 ...+3
Qg4+ Nxg4 ...+3
Qxg4 ...+3
Qh3+ Kxh3 ...+3
Rb7 Qxb7 ...+3
Qxe5+ ...+3
Qd5 Qxd5 ...+2
Qe7 Rxe7 ...+2
Rb4 Qa8+ ...+2
Rc8+ ...+2
Rb5 Qa8+ ...+2
Rb6 Qa8+ ...+2
Rc8+ ...+2
Rc8 Rxc8+ ...+2
Ra8 Qxa8+ ...+1
Qc4 Qxe5#
Qc8 Qxe5#
-*- Qxe5+ ...+1
Qf3 Qa6 Ng4 ...+5
Qf6+ ...+5
Qf7 ...+5
e4 Qe3 ...+5
Qf4 ...+5
Qf6+ ...+5
dxe4 ...+5
Qb6 Qf7 ...+4
Qd6 Nf7+ ...+4
Qb7 ...+4
Qf7 ...+4
Rd8 Qb7 ...+4
Re8 Qb7 ...+4
Qf5 Nxf5 ...+3
Rg8 Nxg8 ...+3
Qc6 Rxc6 ...+2
Qd5 Qxd5 ...+2
Qe7 Rxe7 ...+2
Qd7 Qf6+ ...+1
Qf7 Qxf7 ...+1
Qg8 Qf6+ ...+1
Ra8 Qxa8+ ...+1
Rb4 Qf8+ ...+1
Rc8+ ...+1
Rb5 Qf8+ ...+1
Rc8+ ...+1
Rb6 Qf8+ ...+1
Rb7 Qf8+ ...+1
Rc8 Rxc8+ ...+1
Rf8 Qxf8+ ...+1
Qf6 Qxf6#
-*- Qf6#
Rb5 Kg1 Qd8 Nf7+ ...+5
Qf8 Qc6 ...+5
Qf3 ...+5
Ra5 Qb7 ...+5
Rb8 Qd5 ...+5
Rc5 Rxc5 ...+4
Qb8 Qc6 ...+3
Qf3 ...+3
Qg8 Qc6 ...+3
Rb6 Qxe5+ ...+3
Rb7 Qxb7 ...+3
Qxe5+ ...+3
Rxb7 ...+3
Qd7 Qa8+ ...+2
Rxd7 ...+2
Qe6 Qa8+ ...+2
Qe7 Qa8+ ...+2
Rc8+ ...+2
Rxe7 ...+2
Qf7 Qa8+ ...+2
Rxf7 ...+2
Rb4 Rc8 ...+2
Rd5 Qxd5 ...+2
Qa8 Qxa8+ ...+1
Qc6 Qxc6 ...+1
Qc8 Rxc8+ ...+1
Kg2 Qd8 Nf7+ ...+5
Qf8 Nf7+ ...+5
Qc6 ...+5
Ra7 ...+5
Rb8 Qd5 ...+5
Qf3 ...+5
Qg8 Nf7+ ...+4
Nxg8 ...+4
Qc6 ...+4
Qf3 ...+4
Ra5 Qb7 ...+4
Rc5 Rxc5 ...+4
Qb8 Qc6 ...+3
Rb6 Qxe5+ ...+3
Rb7 Qxb7 ...+3
Qxe5+ ...+3
Rxb7 ...+3
Qd7 Qa8+ ...+2
Rxd7 ...+2
Qe6 Qa8+ ...+2
Qe7 Qa8+ ...+2
Rc8+ ...+2
Rxe7 ...+2
Qf7 Qa8+ ...+2
Rxf7 ...+2
Rb4 Rc8 ...+2
Rd5 Qxd5 ...+2
Qa8 Qxa8+ ...+1
Qc6 Qxc6 ...+1
Qc8 Rxc8+ ...+1
Qf3 Rb6 Kg2 ...+5
Rf7 ...+5
Qd8 Rc8 ...+2
Rd7 ...+2
Qa8 Qxa8+ ...+1
Qc6 Qxc6 ...+1
Rc8+ ...+1
Rxc6 ...+1
Qe6 Qf8+ ...+1
Rc8+ ...+1
Qe7 Rc8+ ...+1
Rxe7 ...+1
Qf7 Qxf7 ...+1
Rc8+ ...+1
Qg8 Qf6+ ...+1
Rc8 ...+1
Qd7 Qf8#
Qf8 Qxf8#
-*- Qf6#
Ra8 Qb7 Qg8 Nxg8 ...+4
Rg7 ...+4
Ra1+ Kg2 ...+4
Qc6+ Qxc6 ...+3
Rxc6 ...+3
Qd7 Qxa8+ ...+1
Qe7 Qxa8+ ...+1
Qf7 Qxa8+ ...+1
-*- Rxh7#
Rd8 Qb7 Qc6+ Qxc6 ...+3
Rxc6 ...+3
Qg8 Nxg8 ...+3
Rd7 Rxd7 ...+3
Qd7 Rxd7 ...+2
Qe7 Rxe7 ...+2
Qf7 Rxf7 ...+2
-*- Rxh7#
Qc6 Qxc6 Rf8 Kg1 ...+2
Kg2 ...+2
Qf6+ ...+2
Rc8 ...+2
Rf7 ...+2
Rg8 Qd7 ...+1
Qf6+ ...+1
Rc8 ...+1
Ra8 Qf6#
Qxa8#
Rb6 Qe8#
Rc8 Qf6#
Rd8 Qf6#
Re8 Qf6#
Qxe8#
e4 Qc3#
Qf6#
-*- Qe8#
Qf6#
Rxc6 Kg7 Qd5 ...+2
Qf3 ...+2
Qxe5+ ...+2
Rc7+ ...+2
Re6 ...+2
Re8 Qd5 ...+2
Qf3 ...+2
Rc7 ...+2
Rc8 ...+2
Rb5 Qf3 ...+1
Rc8+ ...+1
Rb7 Qxe5+ ...+1
Rc8+ ...+1
Rf8 Qxe5+ ...+1
Rg8 Qxe5+ ...+1
Rc8 ...+1
-*- Qxe5#
Rb6 Qxe5+ Qxe5 Rc8+ ...+2
Rf6 Qxf6#
Rb7 Qxb7 Qg8 Nxg8 ...+2
Qc8 ...+2
Rc8 ...+2
Rg7 ...+2
Qc6+ Qxc6 ...+1
Rxc6 ...+1
Qd7 Qa8+ ...+1
Qb8+ ...+1
Rxd7 ...+1
Qe7 Qa8+ ...+1
Qb8+ ...+1
Qc8+ ...+1
Rc8+ ...+1
Rxe7 ...+1
Qf7 Qa8+ ...+1
Qb8+ ...+1
Qc8+ ...+1
Rc8+ ...+1
Rxf7 ...+1
Qa8 Qxa8#
Rxh7#
Qb8 Qxb8#
Rxh7#
Qc8 Qxc8#
Rxc8#
Rxh7#
-*- Rxh7#
Qxe5+ Qxe5 Rc8+ ...+2
Rxb7 Qb5 Rxb5 ...+2
Qe6 Qf3 ...+2
Rb8+ ...+2
Qb8 Rxb8+ ...+1
Qc6 Qxc6 ...+1
Rb8+ ...+1
Qd7 Qxe5+ ...+1
Rb8+ ...+1
Qe7 Rb8+ ...+1
Qa4 Qxe5#
Qa8 Qxe5#
Qc8 Qxe5#
-*- Qxe5+ ...+1
Qe7 Rxe7 Rb5 Qa8+ ...+1
Qc6 ...+1
Qf3 ...+1
Re8+ ...+1
Rb6 Qa8+ ...+1
Qd5 ...+1
Qf3 ...+1
Qxe5+ ...+1
Re8+ ...+1
Rf8 Qxe5+ ...+1
Rg8 Qxe5+ ...+1
Ra8 Qxa8#
Qxe5#
-*- Qxe5#
Rb4 Rc8 Kg7 Qxe5+ ...+1
Rxe8 ...+1
Rb5 Rxe8+ ...+1
Rb6 Qxe5+ ...+1
Rxe8+ ...+1
Rb7 Qxe5+ ...+1
Rxe8+ ...+1
Rxe4 Rxe8+ ...+1
Qg8 Qxe5#
Rxg8#
-*- Qxe5#
Rc8 Rxc8 Kg7 Qb7+ ...+1
Qxe5+ ...+1
Qg8 Qxe5#
Rxg8#
-*- Qxe5#
Qd7 Qxe5+ Qg7 Qxg7#
Qd8 Qxe5+ Qf6 Qxf6#
Qg8 Qxe5+ Qg7 Qxg7#
Qa4 Qxe5#
Qc8 Qxe5#
-*- Qxe5+ Qf6 Qxf6#
Qg7 Qxg7#
Cheers,
Heiner
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