Fogtorization
(Published on 19. August 2025, 08:00 by Kaktuslav)
(old link, with yellow product cages: https://sudokupad.app/l310pkxn5d)
Rules: Normal Sudoku rules apply. Equal sum/product cages: All blue (“+”) cages have the same SUM; all red (“×”) cages have the same PRODUCT. Both constants are to be determined by the solver. Digits may repeat within a cage if allowed by Sudoku. Dynamic fog of war: The grid is partially covered in fog. Entering correct digits may clear fog somewhere in the grid. Usually a correct entry will clear its own cell, but not always — some fog is extra dense! No guessing is required.
Solution code: Column 8
Comments
on 29. August 2025, 10:20 by Kaktuslav
Changed product cages from yellow to red for better visibility
on 27. August 2025, 09:18 by WvdWest
Once in a while you have a puzzle where a "very nice" rating doesn't feel enough to express the beauty of a puzzle. This is most certainly one of them. Thanks for setting this gem.
on 26. August 2025, 19:57 by AdarshN
Tough for a while but great fun the whole time, and a super ending!
on 20. August 2025, 05:02 by abihummel
Very challenging, but well worth seeing it through to the end!
on 20. August 2025, 00:31 by Exigus
Very clever construction, great fun to solve. Thanks!
on 20. August 2025, 00:17 by juggler
Lovely puzzle, and nicely presented!
on 20. August 2025, 00:17 by Myxo
Lovely!
on 19. August 2025, 13:25 by Sotehr
Wonderful fun!
