1. Plate 1 moves one step to the left, to column C.
2. Plate 2 moves one step to the left, which does not conform to the rules of the game, moves two steps, to column B.
3. Plate 3 moves one step to the left, which does not conform to the rules of the game, moves two steps, which does not conform to the rules of the game. Find the smallest plate 1, move one step to the left, and move to column B.
4. Plate 2 is pressed by plate 1 and cannot move. Plate 3 moves one step to the left, to column C.
5. Find the smallest plate 1, move one step to the left, to column A.
6. Plate 2 moves one step to the left, which does not conform to the rules of the game, moves two steps, to column C.
7. Plate 3 is pressed by plate 2 and cannot move. Find the smallest plate 1, move one step to the left, to column C.