Normal sudoku rules apply. The digits along a blue region sum line must have the same sum in each 3x3 box entered by the line. Digits on a thermometer must strictly increase from the bulb end. I think this puzzle is 2 stars out of 5 for difficulty for many solvers. As always, comments welcome. Thanks!
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Solution code: First row of puzzle, and fourth column of puzzle (read top to bottom). Enter as a string of 18 digits, no spaces.
on 10. November 2022, 20:18 by chain.reader
Nice one.
** Thanks for the solve!
on 8. November 2022, 03:02 by Mr.CHEN
I made a very stupid mistake: I took the two region equal sum lines as the same one, but every time I did half the work, there was an impossible situation to solve. I thought it was a error in the puzzle, but later I found this stupid mistake... Fortunately, this puzzle is good.
** I am glad you found your error. Thanks for the solve!
on 8. November 2022, 03:01 by Mr.CHEN
I made a very stupid mistake: I took the two region equal sum lines as the same one, but every time I did half the work, there was an impossible situation to solve. I thought it was a error in the puzzle, but later I found this stupid mistake... Fortunately, this puzzle is good.
on 8. November 2022, 03:01 by Mr.CHEN
I made a very stupid mistake: I took the two region equal sum lines as the same one, but every time I did half the work, there was an impossible situation to solve. I thought it was a error in the puzzle, but later I found this stupid mistake... Fortunately, this puzzle is good.
on 8. November 2022, 03:01 by Mr.CHEN
I made a very stupid mistake: I took the two region equal sum lines as the same one, but every time I did half the work, there was an impossible situation to solve. I thought it was a error in the puzzle, but later I found this stupid mistake... Fortunately, this puzzle is good.
on 8. November 2022, 03:01 by Mr.CHEN
I made a very stupid mistake: I took the two region equal sum lines as the same one, but every time I did half the work, there was an impossible situation to solve. I thought it was a error in the puzzle, but later I found this stupid mistake... Fortunately, this puzzle is good.
on 8. November 2022, 03:01 by Mr.CHEN
I made a very stupid mistake: I took the two region equal sum lines as the same one, but every time I did half the work, there was an impossible situation to solve. I thought it was a error in the puzzle, but later I found this stupid mistake... Fortunately, this puzzle is good.
on 3. November 2022, 22:08 by PDN777
Thank you both for the solves.
on 28. October 2022, 23:39 by Lkrptk
Cool one
on 28. October 2022, 23:06 by peep50183
Lovely as always :)