Thanks, I'll think about something harder for who's reach 1600+ ELO, maybe add a difficulty choice. I like the concept of choose pieces cards, but in my feelings, I think getting more fun or challenge if it give me one random, like 5$ pawn 90% chance 20 medium piece 75% 30 and higher 30% queen 30% rook and 40% medium pieces. some luck. So... its already perfect im impress for the work you've done.