After an official release one is always curious whether one was able to improve the engine and if so by how much. I was pretty sure that the new iCE is better, my test against the old version at very short time controls showed a real improvement. But I was unsure how this scales to other opponents and much longer time controls.
As with iCE 1 Lars Hallerström performed an initial rating test and the results look encouraging. In his private rating list iCE 2 gained 200 ELO and climbed 66 spots. Considering the fact that it now already is faced with some 4 core engines while iCE is running only on 1 this is nice progress.
53 Ice 2.0 (64) : 2954 19 19 1000 57.2 % 2904 26.2 %
119 Ice 1.0 (64) : 2754 19 19 900 52.3 % 2738 26.7 %
53 Ice 2.0 (64) : 2954 1000 (+441,=262,-297), 57.2 %
Fruit 2.3.1 : 40 (+ 26,= 10,- 4), 77.5 %
Ktulu 9 : 40 (+ 28,= 7,- 5), 78.8 %
Spike 1.4 : 40 (+ 14,= 12,- 14), 50.0 %
Komodo CCT (64) : 40 (+ 3,= 9,- 28), 18.8 %
Junior 12.5.0.3 (4cores) : 40 (+ 14,= 9,- 17), 46.2 %
Deuterium 14.01 (64) : 40 (+ 14,= 11,- 15), 48.8 %
Gaviota 0.86 (64) : 40 (+ 21,= 13,- 6), 68.8 %
Dirty Feb 26 2014 (64) : 40 (+ 27,= 7,- 6), 76.2 %
Sjeng WC2008 (64) : 40 (+ 21,= 8,- 11), 62.5 %
Crafty-23.8 (64) : 40 (+ 16,= 13,- 11), 56.2 %
Texel 1.03 (64) : 40 (+ 14,= 18,- 8), 57.5 %
Bug2 1.9 (64) : 40 (+ 27,= 8,- 5), 77.5 %
Scorpio 2.7.6 JA (64) : 40 (+ 10,= 14,- 16), 42.5 %
EX 7.11b (64) : 40 (+ 25,= 12,- 3), 77.5 %
Djinn 1.010 (64) : 60 (+ 39,= 19,- 2), 80.8 %
Cheng 4.36 (64-4cores) : 40 (+ 14,= 15,- 11), 53.8 %
Rybka 4.1 SSE42 (64-4cores) : 40 (+ 3,= 13,- 24), 23.8 %
Hannibal 1.4a (64-4cores) : 40 (+ 5,= 9,- 26), 23.8 %
Chiron 2 (64-4cores) : 40 (+ 3,= 10,- 27), 20.0 %
Senpai 1.0 sse42 (64-4cores) : 40 (+ 1,= 12,- 27), 17.5 %
BobCat 3.25 (64) : 40 (+ 20,= 11,- 9), 63.7 %
Brutus 8.05 JA (64) : 40 (+ 34,= 6,- 0), 92.5 %
GreKo 12.0 JV (64) : 60 (+ 55,= 4,- 1), 95.0 %
Spark 1.0 (64-4cores) : 40 (+ 7,= 12,- 21), 32.5 %
Thanks Lars for providing the data
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