Players Outcome Player A declares mah jongg in error Player A stops playing. Player B throws in their hand Player B stops playing. Game proceeds with Player C and D Player C has exposures showing they need a tile to
Mah Jongg In Error with a Partial Exposure (Article ID 55)
If a player picks a tile from the wall, declares mah jongg, and starts to expose his tiles only to find out he did not have mah jongg, their hand would be considered dead.
Pushing Out and Picking From the Wrong Wall (Article ID 85)
When a player pushes out the wrong wall during play and tiles have been picked, all hands are thrown in, and a new game is started.