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Subject: Re: test position

Author: Stan Arts

Date: 01:47:44 07/25/05

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On July 24, 2005 at 22:00:14, Jon Dart wrote:

>
>[D] 2r2r1k/4b1pp/nq2pp2/pb1pN1PB/1p1P1P2/4P3/PP5P/R1B1QRK1 w - -
>
>bm Ng6+
>


Hi Jon,
thanks for the position.

Neurosis (development version) would find Ng6+ in a minute or less on modern
hardware.

On old hardware however:
P3-550 , 64MB hash.

Legal moves: 39   Static score: -28
Ply Score  Time     Nodes      Best move and expected line
------------------------------------------------------------
2   -92    5        225        gxf6 Bxf1
3   -33    5        2201       gxf6 Bxf6 Nf7+ Kg8
4   -31    11       5826       gxf6 Bxf6 Nf7+ Kg8
5   -34    38       25792      gxf6 Bxf6 Rf2 Nc7 Kh1
6   -35    110      93468      gxf6 Bxf6 Rf2 Nc7 Kh1 Bh4
7   -35    264      221984     gxf6 Bxf6 Be2 Rc2 Bd1 Rc7 Be2 Bxb5 Qxb5 Kh1
8   -34    747      556146     gxf6 Bxf6 Be2 a4 Bxb5 Qxb5 Kh1 Bxe5
9   -31    2279     1481695    gxf6 Bxf6 Rf3 Rc2 Bf7 g6 Qd1 Rf8-c8 a4
10  -34    6333     4272071    gxf6 Bxf6 Rf3 Rc2 Qd1 Rf8-c8 b3 Be2 Nf7+ Kg8
11  -31    13973    9118654    gxf6 Bxf6 Rf3 Rc2 Qd1 Qc7 Bg4 Bh4 Bd2 Rf6 Rc1
11  -30    25441    17984546   Ng6+ < + > hxg6 Bxg6 fxg5 Qg3 Kg8 Qh3 Bf6 fxg5
Rf7 Bxf7+
11  45     26886    19008673   Ng6+ < + > hxg6 Bxg6 fxg5 Qg3 Kg8 Qh3 Rxc1 Rf1xc1
Re8 Bxe8
11  107    29061    20722071   Ng6+ hxg6 Bxg6 fxg5 Qg3 g4 Qxg4 Bg5 Qxg5 Kg8 Rf2
12  102    35163    25524373   Ng6+ hxg6 Bxg6 fxg5 Qg3 g4 Qxg4 Bg5 Qxg5 Kg8 Rf2
Nc7
13  120    65757    49643941   Ng6+ < + > hxg6 Bxg6 fxg5 Qg3 g4 Qxg4 Bg5 Qxg5
Qb8 Rf2 Kg8 Bd2
13  195    96603    70753424   Ng6+ < + > hxg6 Bxg6 fxg5 Qg3 g4 Qxg4 Bg5 Qxg5
Qd8 Qg4 Be8 Qxe6
13  217    110526   80489867   Ng6+ hxg6 Bxg6 fxg5 Qg3 g4 Qxg4 Bg5 Qxg5 Kg8 Qh4
Rf8-d8 Qh7+ Kf8 Qh8+ Ke7 Qxg7+ Kd6
Total nodes:126802047 n/sec:70600  (q-nodes:19% max depth:34)

Stan



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