PAUSE During a game, suspends the game. When paused, continues the game.
During a game, undoes the last move or moves.
During a game, clears the number at the cursor position.
CHECK Indicates if there are errors in a completed puzzle, but does not indicate which numbers are incorrect. Press CHECK again to resume the puzzle. If the puzzle is correct, stops the timer and ends the puzzle. Performs no function if all squares are not filled in.
SOLVE During a game, press and hold this key for 3 seconds to get the correct answer.
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