Author: Tim Foden
Date: 15:02:12 04/10/01
Go up one level in this thread
On April 10, 2001 at 07:25:57, leonid wrote:
>Hello!
>
>If you would like to crush some mate, where solution is not that far but
>resistance is visible, then you can solve this position:
>
>[D]2Qr1bqN/R3P1Rq/1p1q1q2/1Q4qk/q2QQr1n/1Q4r1/3BNqbQ/1B1K4 w - -
>
>Please indicate your result.
Green Light Chess, v2.14-pr7, 880MHz Duron, 48MB hash, finds that e8=B+ is a
mate in 8 after 25 seconds:
Game stage: Opening
Current eval: -11.06
Ply Time Score Nodes Principal Variation
2 0.08 4.491 17453 Qxh7+ Qxh7 Rxh7+ Bh6 Nxg3+ Qxg3 exd8=Q Rxd4 Qxf6
Qxf6
2 0.16 4.491 35268 Qxh7+ Qxh7 Rxh7+ Bh6 Nxg3+ Qxg3 exd8=Q Rxd4 Qxf6
Qxf6
3 0.17 ++ 38133 Qxh7+ (a=3.99 b=4.99 e=4.99)
3 0.30 12.243 69592 Qxh7+ Qxh7 Rxh7+ Bh6 exd8=Q Qxb3+ Qxb3
3 0.47 12.243 140061 Qxh7+ Qxh7 Rxh7+ Bh6 exd8=Q Qxb3+ Qxb3
4 0.52 ++ 152566 Qxh7+ (a=11.74 b=12.74 e=12.74)
4 0.96 14.514 360039 Qxh7+ Qxh7 Rxh7+ Bh6 Nxg3+ Qxg3 exd8=Q Qfxd4 Rxa4
4 1.94 14.514 811030 Qxh7+ Qxh7 Rxh7+ Bh6 Nxg3+ Qxg3 exd8=Q Qfxd4 Rxa4
5 3.77 ++ 1694400 Qxh7+ (a=14.01 b=15.01 e=15.01)
5 7.09 19.186 3365343 Qxh7+ Qxh7 Rxg5+ Rxg5 e8=Q+ Rxe8 Rxh7+ Bh6 Nxf4+
Qdxf4 Qcxe8+ Qf7 Qhxf4 Qxb3+ Qxb3
5 12.48 24.842 6209463 e8=B+ Rxe8 Nxf4+ Qf2xf4 Qxh7+ Qxh7 Rxh7+ Bh6 Qcxe8+
Qf7 Qxf7+ Kg4 Rxa4 Qxb5 Bxf4
5 16.30 24.842 8078534 e8=B+ Rxe8 Nxf4+ Qf2xf4 Qxh7+ Qxh7 Rxh7+ Bh6 Qcxe8+
Qf7 Qxf7+ Kg4 Rxa4 Qxb5 Bxf4
6 16.65 ++ 8249723 e8=B+ (a=24.34 b=25.34 e=25.34)
6 25.17 320.985 14070k e8=B+ Rxe8 Nxf4+ Qf2xf4 Qcxe8+ Qff7 Qxh7+ Qxh7
Qxf7+ Qdg6 Qxg6+ Qxg6 Bxg6+ Kg4 Qxg3# <ht>
6 1:00 320.985 39342k e8=B+ Rxe8 Nxf4+ Qf2xf4 Qcxe8+ Qff7 Qxh7+ Qxh7
Qxf7+ Qdg6 Qxg6+ Qxg6 Bxg6+ Kg4 Qxg3# <ht>
7 1:31 320.985 63160k e8=B+ Rxe8 Nxf4+ Qf2xf4 Qcxe8+ Qff7 Qxh7+ Qxh7
Qxf7+ Qdg6 Qxg6+ Qxg6 Bxg6+ Kg4 Qxg3#
7 5:16 320.985 232282k e8=B+ Rxe8 Nxf4+ Qf2xf4 Qcxe8+ Qff7 Qxh7+ Qxh7
Qxf7+ Qdg6 Qxg6+ Qxg6 Bxg6+ Kg4 Qxg3#
8 6:36 0/113 e8=B+ >exit
local: t=6:38 nps=752814.9 n=299674532 (f=53542769 q=246131763)
total: t=6:38 nps=752814.9 n=299674532 draws=5103
trans: probes=24615146 hits=2435014 (9.89%) draft=1195421 (4.86%)
tcuts: exact=126 (0.00%) upper=627058 (2.55%) lower=513356 (2.09%)
tstor: exact=303 (0.00%) upper=12748283 (73.55%) lower=4584023 (26.45%)
ext: check=39254686 recap=1077928 ppush=0 1rep=419367 thrt=0
q-moves: gen=12647654 tested=1407460 made/un=515565 max-dep=8
max eval diff: part-1=1.868 part-2=1.625
>If your program is shareware, it will be handy if you will indicate address of
>your program on the Web.
Green Light is free and v2.13 is available from
http://www.7sun.com/chess/index.html
Cheers, Tim.
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