Slither

Slither is a dynamic square board connection game in which players move and place stones.

Objective: White's objective is to connect the right and left hand sides of the board while black aims to connect the top and bottom edges.

Materials: A square board of any size and a supply of stones in two colors.

Gameplay: Starting with Black, players on their turn either place a stone on any empty cell or place a stone and move another stone already on the board by a chess king's move. The only condition on these actions is that, at the conclusion of the turn no two stones of the same color can be diagonally adjacent unless they are orthogonally connected by a common like-colored stone.

Forced Passing: In the very unlikely event that a player will not have a legal move on his turn, he must pass his turn. passing is otherwise strictly prohibited.

pie rule: The pie rule has questionable efficacy in classic Slither, as any stone can be translated to the middle of the board without even a loss of tempo. This rule states that