Зайдите в настройки, измените вариант нажатия, можете с левой кнопки поменять на правую кнопку мыши, если правая кнопка исправно работает.
Constant mouse slips
Sort:
You can change the movement settings from drag the piece to click 2 square to solve the problem you mentioned.
https://www.chess.com/settings/board
Still the same guys 
Whats going on ?
StumpyBlitzer napisał:
Must be you for mouse slips?
That was the first thing that I was considering, but the point is that this is not happening on different sites. I think that something is glitching - don't know what though.
Don't know what to do. Changed my mouse but its still happening. Especially here. I am constantly slipping and that cost me many games especially in bullet, and what is even more outrageous in rapid. It's like my left click was not working properly. Any solutions ? I changed my mouse drivers already. Thanks in advance.