Rules:
Place the digits 1-5 once each in every row and column. Digits may not repeat on either of the main diagonals. Along the slow thermometer, digits increase or stay the same as they move away from the bulb.
Solution code: bottom row
on 24. February 2026, 21:49 by abadx
Cool colouring puzzle
on 18. February 2026, 09:15 by dawidk
Cool idea
on 17. February 2026, 21:03 by tomer
unexpectedly challenging. very nice!
| Difficulty: | ![]() |
| Rating: | 90 % |
| Solved: | 57 times |
| Observed: | 3 times |
| ID: | 000RIF |