A grid-based logic puzzle
Color each cell black or white… and give your brain a workout.
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Letter group
Cells containing the same letter should be part of the same group. A group must not contain different letters.
Both cells with the same letter should be in the same group so they must have the same color so the cell on the right is black.
Different letters cannot be part of the same group, so the cells with the letter "B" must be white because they are in contact with the letter "A" and would merge into a single group if colored black.
Both cells with the letter "A" must be in the same group so we must connect them.
