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Practice · Region-Sum Lines
Region-Sum Lines drill 1
★★★☆☆
Time0:00
Target🎯 15:00
✓ Clean
25/81
Digits
Rules
- Normal sudoku rules apply: fill every row, column, and 3×3 box with 1–9.
- On blue lines, each 3×3-box segment of the line sums to the same total.