Thanks to all who attended Sudokucon 2026. This puzzle was set for a quiz where the goal was to quickly locate the value of one cell that was surprisingly under pressure. If you wish to play along at home, the cell under pressure is noted below in a spoiled comment. However, the puzzle is still entirely solvable and I think has some interesting logic beyond the break-in. Good luck!
Download full solution guide (PDF)
Just one Cell
The cell under pressure is R8C8. How quickly can you get this?
Lösungscode: Row 5
am 11. August 2026, 13:59 Uhr von amirs
Very nice puzzle. Finding that one cell was fun
am 8. August 2026, 16:40 Uhr von Snookerfan
Very nice and approachable! Thanks
am 7. August 2026, 21:16 Uhr von Piatato
Fun one, thanks!
am 7. August 2026, 19:15 Uhr von damo_89
Update rules here: Thermos are purple
am 7. August 2026, 18:54 Uhr von Nagesh
There were no grey thermos, unless I have gone blind.
Damo: Good catch. Updated the thermo colour to match the sudokucon styling and forgot to check the rules. Silly me.
am 7. August 2026, 02:28 Uhr von PinkNickels
Very, very nice setting! Probably some tricky steps to those not super confident with thermos, but the steps along the way were fantastic. Bravo!
am 6. August 2026, 23:40 Uhr von sujoyku
Awesome puzzle! Thank you, damo_89!