White makes one move, then each side makes two. You may not check (or promote a pawn which might check) except at the end of your turn. If, at the end of your move, you have three of your own units in any 2x2 area, they all disappear. You may not allow your king to be such a position even on the first of your two moves.
These are simple illustrations rather than strong opponents.
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Written by Ed Friedlander
WWW Page Added: Sunday, December 30, 2001