I have not experienced a single glitch that anyone has mentioned before me. So that really surprises me. My only issue is it isnt challenging enough as I beat the computer 99% of the time. There are times Im surprised at the moves the computer makes as many are passive & wasted moves as every move should be all about being offensive & defensive & always thinking ahead. This is a free game & is refreshing because of the lack of problems & unwanted pop ups. There are free games out there that are so messed up u couldnt pay me to play them because the stress isnt worth it. So thank you for an all around good free game.