Greatest Product
(Published on 17. January 2026, 15:38 by RockyRoer)
The Rules:
- [Sudoku] Normal sudoku rules apply -- fill every row, column and 3x3 box with the digits from 1 to 9 once each.
- [Greatest Product] In all rows or columns marked with a clue, that clue describes the greatest product of any two adjacent cells in that row or column.
- The clues marked odd or even means the greatest product in that column is odd or even.
- The clue marked 5A must be a multiple of 5.
- [Even Squares] The digit in the cell containing a square must be even.
The Puzzle:
Try it using Sven's Sudokupad
Solution code: The digits in the row or column that contains the greatest product seen anywhere in the puzzle, either in order from left to right or top to bottom.
Comments
on 19. January 2026, 15:52 by Franjo
Thank you very much for creating and sharing another fantastic math-puzzle including many nice deductions.
on 18. January 2026, 13:32 by RockyRoer
If you enjoyed this puzzle - I have another with the greatest product rule -- this one paired with killer cages: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000O8O
on 18. January 2026, 06:56 by henrypijames
I really think this might be your best puzzle yet, Rocky!
The solution code prompt is a bit of a spoiler - implying that there is only one row or column with the highest product.
on 17. January 2026, 20:25 by Exigus
Cool idea and very well executed. Thanks!
on 17. January 2026, 19:26 by marcmees
Very nice. Never felt lost. Always some clue that helps you forwards. Thanks
