Checkerboards
Start with a standard board, then change the rows, columns, colors and box shape, such as 3:1 or 2:3.

The whole board, at your columns and rows.
Drawing the board…
Start with a standard board, then change the rows, columns, colors and box shape, such as 3:1 or 2:3.

The whole board, at your columns and rows.
Drawing the board…