Version 2.3 is out:

• use magic bitboard for move generation
• retuned evaluation function (still limited to material & positional square table).
• retuned search parameters + probcut added
• much better comments following the D convention
• added logging facilities & eval/board display to better understand how the engine works

This version is bout 20 Elo stronger than version 2.1. Version 2.3 fix a regression introduced in 2.2