Celticjim: I have received achievements too. The game reference link takes me to move 56. I didn't check previous moves until now for rule violations. Move 54-55: The 5 moves from h1-g1 then back from g1 to h1 next. Stranger still, other moves were available to the 5 as it was not trapped by its own bombs.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)