1. Player 1 and 2 each remove a rectangle of pieces each turn.
  - Doesn't matter if some pieces within the rectangle are already removed.
2. Each player must remove at least 1 piece from the board.
3. The person who has to remove the last piece loses.

- Hold down the mouse on the board and drag it to select pieces you want to remove.
  - If you want to cancel it, move the mouse button outside the board and release the mouse.
- Release the mouse to remove those pieces and hand the turn to the opponent.
- This game is really hard to play perfectly, so take your time and think about your opponent's possible moves.
- Press S to stop the AI, Z to undo, Y to redo, R to reset (please don't cheat though)

a. If you leave your opponent with a 2x2 square, you're winning.
b. If your opponent leaves you with a 3x3 square, you're winning.
  - Take the center or one of the corners.
c. If your opponent leaves you with a 3x4 rectangle, you're winning.
  - Take the middle 2 from the long edge on either side.
d. If your opponent leaves you with a 4x4 square, you're winning.
  - Take the 4 center pieces.

- Reduce dictionary size through the elimination of mirror images
- Optimize AI
- Try to find the optimal winning strategy mathematically