@duda wrote:every books are good :
rybka 4 ctg.
Sambuca 2.3 ctg.
Stark 2.5 ctg.
and many others.
But, 32 bit computer with 32 bit engine is not so strong then 64 bit comp and 64 bit engine. If you want that your program was very very strong you don't need only book. you need :
1) Strong engine - deep rybka 4 , Houdini 1.5
2) Good opening book
3) and main very strong computer with 64 bit windows.
If you will play with 32 bit against 64 bit no chance. That's why you need strong computer, strong engine, strong book and your program will be super!!!
Good Luck and many wins!!!!!!!!!!!!!!!