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Free Play
Grandmaster Trial
★★★★★
Time0:00
Target🎯 30:00
✓ Clean
10/81
Digits
Rules
- Normal sudoku rules apply: fill every row, column, and 3×3 box with 1–9.
- Both main diagonals must also contain 1–9 with no repeats.
- Cells a chess knight's move apart cannot contain the same digit.
- Along thermometers, digits strictly increase from the bulb end.
- A black dot joins cells in a 2:1 ratio; a white dot joins consecutive digits.