Normal Sudoku rules apply.
Some lines are thermometers; digits on these lines strictly increase from the bulb.
The remaining lines are index lines; a digit D in the Nth position along these lines (where the bulb is position 1) tells you that the digit N occurs in the Dth position along that line.
Solution code: Top row
on 4. August 2026, 00:13 by damo_89
Enjoyed that a lot
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