Cómo jugar

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.

Niveles y modos

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.