To start the new year with a fresh new base I’d like to release Stockfish 2.2. This should be really a small improvement ELO wise, I have tested it against SF 2.1.1 JA and in single core I got +10 ELO, we think in multi core we should gain some more, but remain anyhow around +20 ELO maximum. Not a lot for 6 months of work but at least the readability of code base has greatly improved and also shrinked in size of almost 900 lines:
