Three Musketeers is played on a five-by-five square board with an initial setup as follows; number signs represent the Three Musketeers and zeroes represent the Enemy:
The Musketeers win if on their turn they cannot move due to there being no Enemy pieces adjacent to any Musketeer and they are not all on the same row or column. As long as one Musketeer can move, the game is not won.
Rules
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The players take turns moving one piece; the Three Musketeers player starts. The rules are as follows:
The Enemy wins if it can force the Three Musketeers to be all on the same row or column.Reference