colorBase
Color tools & libraries
Fill the 9×9 grid so every row, column, and box has digits 1–9.
Fill every row, column, and 3×3 box with digits 1–9.
Filled
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Keep exploring
Slide and merge tiles to reach 2048 in this classic animated puzzle.
Slide tiles into place to solve the classic 15-puzzle.
Click a question to open it. Click again to close.
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