Build: Click any cell to toggle black/white. Click a black cell that borders white cells to enter its clue numbers — select across or down, then use the numpad. For white cells, click to select, numpad to pre-fill a digit. Then Check and Solve.
Grid Size
Click a cell to toggle black/white. Click a black clue cell to enter run totals.
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Solution Steps
Build your puzzle, then click ② Check and ③ Solve It.