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Subject: Re: Initial Position Search Nodes

Author: Steve Maughan

Date: 06:24:08 10/09/00

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OK so here’s a middlegame position - nothing special.  It’s actually AnMon v
Ikarus the games move was Rd2 but there doesn’t seem to be too many tactics
flying about.

[d]r1br2k1/1pq2pbp/2p3p1/p1n5/2NN4/4P1P1/PPR1BPP1/3Q1RK1 w - - 0 21

So my program (it has no name) takes 70 seconds and uses 17,059,562 nodes to
complete the _eighth_ ply.  There are also only 3.3% of nodes where there are a
hash hit – a bit low maybe?

Other programs:

Faile 56 secs and ~4,600 kn
Crafty 17.11  9 secs and ~1,500 kn
Ikarus 22 secs and ~2,900 kn
Goliath Light 8 secs and 1,800 kn
HIARCS 7.32 36 secs and 1,692 kn
Nimzo 7.32 6 secs and ~1,700 kn
ExChess 3.11 9 secs and ~1,200 kn

Clearly there is something wrong with my program or is this what one would
expect from a young vanilla alpha / beta?

Steve Maughan



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