Cách chơi

Fill the grid with two colors. No row or column may contain three consecutive cells of the same color; each needs equal numbers of both colors, and completed rows and columns must be distinct. Use the fixed clues to eliminate impossible choices.

Màn và chế độ

Different board sizes change the amount of deduction required. The goal is a complete valid grid, not a high-speed reaction score. Avoid guessing before checking both the row and column of a cell.