Multiplication Tables
(Published on 26. July 2025, 22:49 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.
- [Modular Lines] Any three numbers along the teal line must have a different remainder when dividing by three - i.e. from the set {147}, {258}, and {369}
- [Entropic Lines] Any three numbers along the peach line must be small, medium, or large - i.e from the set {123}, {456}, and {789}.
- [Products] Every 1- or 2-digit pill is a number representing the product of either the digits in the first row and column, or the digits in the last row and last column of the cell containing the pill. (For 2- digit bubbles, the product is read from left to right or top to bottom, and this product would be the referencing the cell containing the ten's digit)
The Puzzle:
Try it on Sven's SudokuPad.
Solution code: Row 4
Comments
on 27. July 2025, 22:52 by gdc
Very fun and approachable.
on 27. July 2025, 15:48 by Franjo
An easy one. I only struggled with a ghost pill in box 9 (with thin outline) using the link. Thank you very much for creating and sharing another lovely math puzzle.
Reply: Weird... not sure how that happened. I think I've fixed it -- thanks for bringing it to my attention.
on 27. July 2025, 15:20 by RockyRoer
Revised rules to say teal and peach, and removed 'ghost bubble' in link.
on 27. July 2025, 12:45 by zeniko
Beautifully layed out and nicely approachable puzzle. Thanks for sharing.
One rule clarification: The lines are teal (modular) and peach (entropic).
Reply: Thanks for the solve - I've updated the rules!
on 27. July 2025, 03:07 by Exigus
Seems very open at the start but you can narrow it down quite quickly and it's smooth sailing from there. Thanks!
on 26. July 2025, 23:17 by RedBarchetta
Took me a minute to get the rules. Used some coloring and loved the interactions between the line types and the clues. Thanks!
