At Sixes and Sevens
(Published on 26. April 2026, 16:25 by Sudokujoker)
This is the first puzzle I designed using thermo rules, so it was a bit of an experiment, but I thought it was still worth posting it to see if anyone likes it. This is another puzzle that I designed some time ago but hadn't uploaded before.
I wasn't sure how to rate the difficulty - it's a fairly easy start (as you can probably guess from the picture!) but then there are a couple of steps where you have to notice a specific pattern, which I think makes it a difficult puzzle overall. I believe that the puzzle doesn't require significant bifurcation to resolve. Having said all that, I'm not the best solver myself so I may not have noticed a better alternative solution path!
Normal sudoku rules apply: place the digits 1-9 in each row, column and 3x3 box. Thermo: Digits on a grey thermometer must increase starting from the bulb end.
Sudokupad link: Sudokupad.app/xvcd5l9ary
Solution code: Row 1
Comments
on 27. April 2026, 13:38 by VitP
there is ONE step where you have to case a cell (top of left ?). it's a fairly obvious thing to check. it leads to a short chain (~5 steps) everything else is basic sudoku & standard procedures.
--> level 1
on 26. April 2026, 23:20 by wuc
Compared to puzzles here this is far easier than 4*. A nice approachable puzzle it is anyway thx.
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Reply: Thanks for the feedback! I see the "real" difficulty rating has now come up. Glad you enjoyed the puzzle :)
