Nitty Gritty

Twenty-four square tiles are to be placed in a 5x5 tray (the center square is not playable); a player is eliminated when the player cannot make legal move; the last player to move, wins.

Each tile is a 2x2 square array of one of three colors - each permutation, ignoring rotation, is represented once among the tiles.

The game can be played solitaire as a puzzle.