Author: Heiner Marxen
Date: 07:41:55 04/04/03
Go up one level in this thread
On April 03, 2003 at 17:35:16, George Tsavdaris wrote:
>Is there any engine can find the right move in this incredible position
>in a reasonable time? All the engines i tried on my 1500 MHz PC failed.
>Even Fritz 8 after 20 minutes didn't find the move.
>
>The amazing move is 1.Bc7!! After that 1...Qxc8 is forced. 1...Qxc8
>2.gxf7+ Kh8 [2...Kf8 3.Bd6#]
>3.Be5 Qc5 The only move.
>4.Bb2! Nc7 Again the only move.
>5.Ba1 a4 6.Bb2 a3 7.Ba1 a2 8.Bb2 a1Q 9.Bxa1 And black has no other moves! 1-0
>
>[D]n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - 0 1
According to Chest this is a mate in 12 with the unique solution key 1.Bc7.
(Athlon 1500+, 128MB hashtable, some 5-piece EGTs, 336 secs (5.6 minutes)):
PV: Bc7 Qxc8 gxf7+ Kh8 Be5 Qc5 Bb2 Nc7 Ba1 a4 Bb2 a3 Ba1 a2 Bb2 a1=Q Bxa1 Nd5+
Ke6+ Nc3 Bxc3+ Qe5+ Bxe5#
Bc7 Qxc8 gxf7+ Kh8 Be5 ...+9
Kf8 Bd6#
Nxc7 gxf7+ Kf8 Qxc7 ...+4
Kh8 f8=Q+ ...+1
hxg6 Qxe8+ Kh7 Qxf7+ ...+1
Kf8 g7+ Kg8 Qxe8#
Qf8 gxf7+ Kh8 Qxf8#
Qd8+ Qxd8#
-*- Qxe8#
Cheers,
Heiner
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