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Subject: Re: Pocket Chess Genius 1.5 55 seconds - Dell Axim

Author: Stan Arts

Date: 05:23:21 10/17/03

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>The position below took Pocket Chess Genius 48 minutes on the same unit.
>
>[d]5rk1/pprbbp2/2np3Q/4p1P1/4P3/2qBB3/P1P3P1/3R1R1K w - - 0 27
>
>
>
>Even "The King" took  1 minute and 6 seconds on my machine 1.7 Ghz P4 Xeon == to
>about 1.2 Ghz P3 for Chess (ss=12)
>
>The position came from this game - using the Trojan Horse trap (Ng5 followed by
>h5 after h6) against Genius

Hi Mike

Well..there's no mate in 4..but a nice game and an interesting position.

Neurosis 1.4(next version) on slow pIII-550 with 64MB hash.

g6 is a draw, and later it finds Rf6 to be winning.
It's probably atleast a mate in 7 or more with not much prior checks in
the main line. What is the solution the other programs gave you tested?
Other programs will do better but I just wanted to let Neurosis search on a
position for a longer time.

Legal moves: 45
Ply Score Time     Nodes      Best move and expected line
------------------------------------------------------------
2   -305  11       1719       g6 fxg6
3   -298  11       5270       g6 fxg6 Qxg6+ Kh8 Rxf8+ Bxf8 g3
4   -298  28       17887      g6 fxg6 Qxg6+ Kh8 Rxf8+ Bxf8 g3
5   -298  116      75449      g6 fxg6 Qxg6+ Kh8 Rxf8+ Bxf8 g3
6   -298  549      360018     g6 fxg6 Qxg6+ Kh8 Rxf8+ Bxf8 g3
6   -297  1099     750029     Rf3 < + > Nd4 g6 fxg6
6   -294  1357     954330     Rf3 Rf8-c8 g6
7   -293  2214     1563091    Rf3 Nd4 g6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 Rg3+ Kf7
7   -292  2296     1653392    g6 < + > fxg6 Qxg6+ Kh8
7   -39   2313     1673564    g6 < + > fxg6 Qxg6+ Kh8
7   0     2576     1873822    g6 fxg6 Qxg6+ Kh8 Qh5+ Kg7 Bh6+ Kg8
8   0     5443     3933149    g6 fxg6 Qxg6+ Kh8 Qh5+ Kg7 Bh6+ Kg8
9   0     17120    12299057   g6 fxg6 Qxg6+ Kh8 Qh5+ Kg7 Bh6+ Kg8
9   1     21070    16021988   Rf3 < + > Nd4 g6 Qe1+
9   9     30039    24701462   Rf3 Na5 g6 fxg6 Qxg6+ Kh8 Rg3 Bg4 Qxg4
10  19    118041   94461060   Rf3 Bg4 g6
10  20    153187   123337816  Rf6 < + > Nd4 g6 Qe1+
10  270   160482   130857898  Rf6 < + > Nd4 g6 Qe1+
10  327   185385   151940221  Rf6 Qxd3 cxd3 Be8 Qh5 Rc8 Rh6 Kg7 Rh7+ Kg8 Rf1
11  377   324819   255552033  Rf6 < + > Qxd3 cxd3 Be8
11  455   421471   328240657  Rf6 Qxd3 cxd3 Be8 Rd1-f1 Bxf6 gxf6 Ne7 fxe7 Rxe7
Qg5+ Kh8 Bxa7

Stan



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