Long Multiplication
(Published on 1. November 2026, 19:41 by basilicon)
Rules
Chaos Construction: place digits 1-9 once in every row and column, and divide the grid into 9 orthogonally connected regions of 9 cells, each containing digits 1-9 once.
Multiplier cells: each region has one multiplier cell. The 9 multiplier cells hold different digits and are one per row and column. A cell's value is its digit times the digit in its region's multiplier cell.
Thermometer: values strictly increase from the bulb.
Play online: SudokuPad
Solution code: Row 1 from left to right.
Comments
on 11. November 2026, 20:24 by wuc
Brilliant construction. 3* idea on start. Great setting.
on 3. November 2026, 05:48 by 3good5you
Cool idea!
on 2. November 2026, 22:54 by Qodec
Very funny, very elegant!
on 2. November 2026, 22:39 by deltameth
Wow, what a gem!
on 2. November 2026, 21:37 by OboeSapien
This is one of the most brilliant puzzles I have seen. I would absolutely love more with this constraint. The break in was beautiful and intuitive and then it went well from there. Absolute master work
on 2. November 2026, 15:35 by mihel111
The funniest thermo of them all. Well done.
PS : Would like to see Mark pencilmark this one.
on 2. November 2026, 15:26 by Franjo
Thank you very much for creating and sharing this funny CC-puzzle.
on 2. November 2026, 05:41 by RedBarchetta
So good. 100%. I laughed when I got it. Thank you!
on 1. November 2026, 23:39 by Myxo
:)
on 1. November 2026, 20:32 by marcmees
Nice, easy & elegant CC. Thanks
