Normal Sudoku rules apply. Gray lines are ambiguous thermometers; digits along these lines must increase from one end to the other (which end is which must be determined by the solver). The inequality must point to the smaller of the two adjacent digits.
If you enjoy this puzzle, feel free to try any of the three previous entries in the series, all based around a single constraint plus one inequality:
It's Off to Work We Go (Renban)
Solution code: Row 1 followed by column 5, no spaces or punctuation
on 3. October 2023, 20:02 by zrbakhtiar
Rephrased rules for clarity needed for CTC and fpuzzles link too
on 3. October 2023, 20:01 by zrbakhtiar
Rephrased rules for clarity needed for CTC and fpuzzles link too
on 11. September 2022, 22:42 by twototenth
Rephrased rules for clarity
on 14. September 2021, 18:14 by Playmaker6174
Fun and enjoyable puzzle, thank you :)