Please don't use the 2.71 which is not so strong. The 2.72 seems not so bad (it is for me the 2.72d).
Compared to 2.71, this version has an improved move ordering (hanging pieces are placed in the first places in the list), and the nullmove conditions are modified (Eval is no more compared to beta, when the nullmove score is not greater than beta the move is considered tactical). I really hope it is stronger than the previous versions (it made 7.5/11 in the 16th Chesswar promotion, with some luck, so that I am very proud :-) )
