DIRECTIONS: To learn how to play Minesweeper click the source. For the Sporcle version, to unlock a box, enter it as a number-letter combination. For example, the 2nd row, 2nd column would be entered as '2b'. Careful though - if you hit a mine, the game is over! To optionally place a "flag" over a box, type the word flag and the letter-number comination (e.g. 'flag 2b'). The flag will appear in the column, not actually over the box. This action cannot be undone, but it will not affect the outcome of the game.