Sjakk 2.1 By Jacob Børs Lind 22.06.2014 Sjakk is a winboard and UCI chess engine. You need an external GUI to play a game of chess. If you want a chess engine with own interface please download Sjakk 1.1.9. Hash adjustment: If you need to adjust the Hash size add the Hash parameter. Example: Sjakk 2.1 x64 Hash n n is the number og hash entries int the form 2^n n=22 is default. n=24 is the maximum. Memory usage for different values of n n=1 ~ 6 MB n=18 ~ 29 MB n=20 ~ 69 MB n=22 ~ 213 MB n=24 ~ 804 MB