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Toggle Squares Game

This game originated from a Java game by Dr. Ken Housley, whose personal site has since gone offline. This implementation is JavaScript-based.

Rules

You are presented with a board of squares that can be either of two colours. The objective is to convert all squares to the same colour.

By clicking on a square, you toggle the colour of the square as well as that of all the neighbouring squares (without wrapping and including the diagonal ones). As a result, clicking on side or corner squares will toggle only 6 or 4 squares.

The Game

Num Squares: