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Chess engine: Roc2 2.0.1 (derived from Gull)

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Roc - C++ chess engine derived from Gull 3 
Author: Demichev/Hyer  Rating CEDR=3212

v.2.0.1:
Lazy SMP with true threading, not multiprocessing, model.
Some framework code is ported from Ethereal, and as such should be treated as GPL-licensed. (But why not just go straight to the source?)
It is probable that this is the weakest Roc yet released. Hopefully this can now be improved.

Individual statistics: Roc 2.0.0 
Nippolit12/14+1014 Games
Tenax 0.7.95/14-414 Games
Caissa 1.82.5/14-914 Games
Stockfish 15.10.5/10-910 Games
Flounder 0.5.0.04.5/8+18 Games
Drofa 4.004.5/8+18 Games
Rice 5.0.02.5/8-38 Games
SFT 26.04.20231/8-68 Games
Polyfish 2304260.5/8-78 Games
Polaris 1.5.06/6+66 Games
Mess 0.2.06/6+66 Games
Zangdar 2.15.035.5/6+56 Games
Apotheosis 4.0.15.5/6+56 Games
Vengeance 2.0.05.5/6+56 Games
Ice4 v35/6+46 Games
Bagatur 3.7d4.5/6+36 Games
4ku 3.04.5/6+36 Games
Critter 1.6a4/6+26 Games
Svart 44/6+26 Games
Nirvanachess 2.52.5/6-16 Games
Fire 42920231.5/6-36 Games



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