Dolambaç

Rules

• The board is nine by nine squares. You start in the middle of the near edge. You win by stepping onto any square of the far edge.
• Side A starts the first game. After that, the side that did not start last time starts.
• A turn is one action: the pawn moves, or one wall is placed.
• A pawn steps one square up, down, left or right onto an empty square, when the groove between the two is open.
• When the other pawn stands on the next square and the square straight beyond is on the board, empty, and open, you may jump there. One jump ends the turn.
• A side-step: the other pawn stands on the next square, the groove to that pawn is open, and the square straight beyond is unavailable. Unavailable means a wall closes the groove beyond, or the square is off the board. You may then land on either square beside that pawn, when it is on the board and empty and the groove to it is open. A side-step exists only in that case. You never share the other pawn's square.
• A wall sits on a crossing and covers two grooves, flat or upright. Ten walls each. The eleventh is refused. Two walls that share a groove are refused, and so is a flat wall crossing an upright wall on the same crossing. Walls may meet at their ends, and they may meet in a T.
• After a wall, each pawn must still have a walk of open steps to its own goal row. The other pawn is not a block in that walk. A wall that leaves either pawn with no walk is refused.
• When a wall makes the other pawn's path longer, the screen shows the growth and nothing else: the length after, minus the length before.
• The step that lands on the goal row wins at once. The same position three times is a draw. Turn 200 with nobody home is a draw. A draw scores nothing.