Author: Bas Hamstra
Date: 06:31:34 01/20/05
Go up one level in this thread
Tao thinks it's a M10:
9.03 0:00 +2.76 1.Nxh7 Nf5 2.Nxf8 Qxf8 3.Qxc7 Nc6 4.Re1 Kg8 5.Qf4
10.01 0:01 +2.38 1.Nxh7 Nf5 2.Nxf8 Qxf8 3.Qxc7 Nc6 4.Qf4 Qb4 5.Rb1 Kg8
11.01 0:02 +2.49 1.Nxh7 Nf5 2.Nxf8 Qxf8 3.Qxc7 Nc6 4.Rd1 Qb4 5.Bb3 Qb5+
11.04 0:05 +2.49++ 1.Be5 (2.350.034) 428.2
11.04 0:11 +3.20 1.Be5 b6 2.Bxd6 cxd6 3.Qh4 h5 4.Nxf7+ Rxf7 5.Bxf7 Ba6+
11.06 0:11 +3.20++ 1.Nxf7+ (4.932.314) 423.4
11.06 0:22 +5.87 1.Nxf7+ Rxf7 2.Bxf7 Qf8 3.Bxg6 Nf7 4.Qh4 h6 5.Bxf7 Qxf7
12.01 0:24 +7.05 1.Nxf7+ Rxf7 2.Bxf7 Qf8 3.Bxg6 Nf7 4.Qh4 h6 5.Qh5 b6
13.01 1:40 +M10 1.Nxf7+ Rxf7 2.Bxf7 Qf8 3.Bxg6 Nf7 4.Bxf7 Qxf7 5.Qh6
Kg8 6.Re1 Qc4+ 7.Kg1 Qg4 8.Re8+ Kf7 9.Re7+ Kg8
10.f7+ Kf8 (51.669.359) 516.4
Bas.
On January 19, 2005 at 03:38:25, Richard A. Fowell wrote:
>This position is from Jack Peter's chess column in last Sunday's Los Angeles
>Times:
>http://www.latimes.com/features/puzzles/chess/?track=mainnav-chess
>
>[D]rnbq1r1k/pppp1p1p/3n1Pp1/6N1/2B2Q2/8/PB3PPP/R4K1R w - -
>
>On my 867 MHz Mac G4, Ruffian 2.1 takes less than three minutes to claim Mate in
>11, with
>
>+mate 11 18/2 2:25 73712484 nodes 506905 nps
>
>1. Nxf7 Rxf7 2. Bxf7 Qf8 3. Bxg6 Nf7 4. Qh4 Qg8 5. Bxf7 Qxf7 6. Re1 h5 7. Re8
>Kh7 8. Qe4 Qg6 9. Qe7 Kh6 10. Bc1 Qg5 11. Qg7
>
>MacChess, and HIARCS take more 12 minutes to settle on Nxf7, and more than 20
>minutes
>to claim a Mate score, and even then take longer to claim Mate in 11. Fruit
>2.0.0 does not
>even find the key move in 25 minutes.
>
>How do others fare - and is this really Mate in 11?
>
>-Richard
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