Wythoff array

The Wythoff Array is like a board game. It's like playing a game of checkers or tic tac toe. In this game, you start with a 3x3 grid and you can put two pieces on the grid - one is black and one is white. You and the other player take turns moving the pieces around the grid. The pieces can move up, down, left, or right, but they can't jump over pieces. The goal of the game is to make a straight line of five pieces on the board. The player who does it first wins! It's a fun game!