Quadrature

Rules

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• Quadrature is a two player strategy game.
• Each player has a set of 16 checkers.
• Players start with 9 checkers on the board with 7 held in reserve.
• The board is an 11 by 11 square grid.
• Players take turns moving a checker *one space* forward, diagonally forward, or sideways. Players cannot move backwards or diagonally backwards.
• Squaring" is an aggressive maneuver in Quadrature. To "square" an enemy checker, you move to form a rectangle on the board with three of your checkers and one enemy checker. So you have three "squaring" checkers and one "squared" checker
• The enemy "squared" checker is then removed from the board and replaced with one of your own reserve checkers.
• A chain-reaction can happen in Quadrature. When you replace an enemy checker with one of your own reserve checkers, your newly added checker can square additional enemy checkers. And so on.
• You must not move an on-board checker to any point that completes an enemy square. Suicide moves are not allowed, no matter what.
• After three non-aggressive sideways you must make a forward, diagonally forward, or aggressive sideways move. An aggressive sideways move kills enemy checkers.

Goal

• If you kill enough enemy checkers to leave your opponent with two or less checkers on the board, you win.
• If you can get three of your checkers onto the enemy "home plate", you win.
  A player's home plate consists of the three points in the middle of his side of the board.