Heat Index
(Published on 23. June 2026, 00:25 by jojo81gaming)
Normal Sudoku rules apply.
On an index line, the digit in the Nth cell along the line (starting from the diamond) indicates the position along the line where the digit N appears.
On each Index line, there is exactly one 'Thermometer bulb' somewhere on the line, from which digits increase along the line for at least X steps in both directions. Where X is the digit on the diamond.
Eg: 14325 would be a valid line with 1 on the diamond and the thermometer bulb in position 4.
Solution code: Row 8 read left to right.
Comments
on 1. July 2026, 21:31 by SecondBlue
Algebra detected Madge
on 26. June 2026, 18:53 by DiMono
Fine puzzle. Solvers take note the rules say "there is EXACTLY ONE 'Thermometer bulb' somewhere on the line"
on 23. June 2026, 21:57 by alexsmart
Very nice puzzle! The last line was an absolute joy to resolve.
on 23. June 2026, 17:52 by dkfan9
love the double thermo index rule, well done puzzle, smooth but required solving from beginning to end, thanks!
on 23. June 2026, 01:44 by Chaossudokusplease
Great puzzle! Lots of fun interactions and ways to think about how it works! Took me a little while to wrap my head around the rule but once I figured it out (and read it properly…), it was a very smooth solve with some nice aha moments
