Cells that are a chess knight's move apart must not contain the same number.
Cells that are a chess king's move apart must not contain the same number.
Red spots indicate that the two sets of diagonal cells touching them both add to ten
One box is a magic square with vertical, horizontal and diagonal groups of three numbers adding to the same total.
Thermometer increases from the bulb end.
Solve online:Sudokupad
Solution code: top line
on 6. February 2026, 22:47 by tomer
https://sudokupad.app/aq0c6msz64
with solution checker
| Difficulty: | ![]() |
| Rating: | 93 % |
| Solved: | 22 times |
| Observed: | 0 times |
| ID: | 000RCA |
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