There's a few issues, 1: when anti-mines are turned on, the zero spread chords ALL the zeros including ones that have one mine and one anti-mine leading to instant losses on the first click. 2: If you try to exit a game with too many bosses, the game simply crashes. 3: if all closed tiles are flagged and the amount of closed tiles is less than or equal to your [handicap+mine count] eleven will freeze the game effectively soft-locking the player (only if there is a nine that has been completely flagged by the PLAYER). 4: if eleven flags nine at all, you lose instantly. 5: probably not a bug, but if you use nine and eleven together nine gives a -8 flag handicap (and based on my experience as a dev I'm thinking you meant to put +8 so the player could flag nine before the round started). This is everything I've found so far, if I find any more you will be alerted