Ken Drew's "Automated Checkers"
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Automated Checkers

   "Automated Checkers" works by typing in the location of the checker you want to move, and then typing in the square you want to move it to.  The program will check to make sure that the move is legal (another checker isn't in that spot, moving too far, not  moving diagonally, etc.)   The mechanism will then move over to the selected checker, move down and activate an electromagnet to pick up the checker, move over to the selected square, move down, and deactivate the electromagnet to release the checker.