Author: Joachim Rang
Date: 06:35:39 09/10/02
Go up one level in this thread
On September 10, 2002 at 06:51:07, Shaun Brewer wrote:
>I have just discovered that my tests between these two engine versions are
>invalid.
>
>Crafty 17.10 only chooses the highest ranked opening book move see below:
>
>Crafty 17.10: see moves considered
>
>White(1): go
> clearing hash tables
> after screening, the following moves can be played
> move played % score learn CAP sortv P% P
> e4! 271451 43 0.15 0.01 -655.36 13077.0 40 Y
> d4! 223430 35 0.15 0.00 -655.36 12896.1 30 Y
> f4! 1491 0 -0.05 0.00 -655.36 12038.5 30 Y
> Nf3 65893 10 -0.02 0.00 -655.36 4281.7 0 Y
> c4 48639 7 -0.17 0.00 -655.36 4188.2 0 Y
> d3? 203 0 0.13 0.00 -655.36 69.7 0 N
> e3? 155 0 0.13 0.00 -655.36 69.6 0 N
> Nc3? 860 0 -0.02 0.00 -655.36 42.2 0 N
> f3? 6 0 -0.07 0.00 -655.36 29.0 0 N
> g3? 6183 0 -0.21 0.00 -655.36 23.8 0 N
> Nh3? 5 0 -0.12 0.00 -655.36 19.0 0 N
> Na3? 5 0 -0.12 0.00 -655.36 19.0 0 N
> b3? 2264 0 -0.21 0.00 -655.36 9.3 0 N
> c3? 103 0 -0.19 0.00 -655.36 5.4 0 N
> h4? 6 0 -0.19 0.00 -655.36 5.0 0 N
> b4? 429 0 -0.20 0.00 -655.36 4.6 0 N
> a3? 111 0 -0.20 0.00 -655.36 3.4 0 N
> h3? 75 0 -0.20 0.00 -655.36 3.3 0 N
> book moves {e4, d4, f4}
> moves considered {e4}
> move played % score sortv P% P
> e4! 271451 43 0.15 666.7 40 Y
> book 0.0s 43% e4! c5
>
>Crafty 18.15: for comparison
>
>White(1): go
> clearing hash tables
> after screening, the following moves can be played
> move played % score learn CAP sortv P% P
> e4! 271451 43 0.49 0.00 -655.36 12581.0 40 Y
> d4! 223430 35 0.49 0.00 -655.36 12492.5 30 Y
> f4! 1491 0 0.21 0.00 -655.36 12027.7 30 Y
> Nf3 65893 10 0.35 0.00 -655.36 4174.4 0 Y
> c4 48639 7 0.09 0.00 -655.36 4090.6 0 Y
> d3? 203 0 0.46 0.00 -655.36 75.4 0 N
> e3? 155 0 0.46 0.00 -655.36 75.3 0 N
> Nc3? 860 0 0.35 0.00 -655.36 54.6 0 N
> Nh3? 5 0 0.25 0.00 -655.36 33.0 0 N
> Na3? 5 0 0.25 0.00 -655.36 33.0 0 N
> f3? 6 0 0.18 0.00 -655.36 19.0 0 N
> g3? 6183 0 0.07 0.00 -655.36 8.4 0 N
> b4? 429 0 0.10 0.00 -655.36 3.8 0 N
> b3? 2264 0 0.07 0.00 -655.36 1.2 0 N
> h4? 6 0 0.09 0.00 -655.36 1.0 0 N
> a3? 111 0 0.06 0.00 -655.36 -4.8 0 N
> c3? 103 0 0.06 0.00 -655.36 -4.8 0 N
> h3? 75 0 0.06 0.00 -655.36 -4.9 0 N
> book moves {e4, d4, f4}
> moves considered {e4, d4, f4}
> move played % score sortv P% P
> e4! 271451 43 0.49 40000.0 40 Y
> d4! 223430 35 0.49 30000.0 30 Y
> f4! 1491 0 0.21 30000.0 30 Y
> book 0.0s 43% e4! c5
>
>Oh well a couple of thousand games has proved that 17.10 with a narrower book
>choice is better than 18.15 not really what I was trying to test.
>
>Shaun
what a pity! One should assume that the newer book of Crafty 18.15 is better, so
I'm not so sure, that your results are so invalid.
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