Line of Sight Chaos Production (9x9)
(Published on 4. February 2022, 03:10 by RockyRoer)
The Rules
- Normal Irregular Sudoku Fill each row, column and 9-cell region with the digits from 1-9. The boundaries of the regions must be determined by the solver.
- Line Of Sight Products Clues in the grid indicate some of the cells that can see at least two cells in its same region both horizontally and vertically. Every digit it sees horizontally is summed, and every digit it sees vertically is summed, and these sums have been multiplied together. Region boundaries stop the line of sight.
Examples:
- The 30 clue in the example puzzle sees 1+2 vertically and 5+2+3 horizontally and 3*10 = 30.
- A clue could not have been placed in R3C3 because it does not see at least two cells vertically.
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| Play on f-puzzles or on CTC App |
The Puzzle
Solution code: The number of regions in each row from top to bottom, followed by the digits in column 4. (For the example it would be 2332112345)
Comments
on 23. July 2022, 15:49 by Mody
Große Klasse
on 23. March 2022, 22:20 by Christounet
Wow, took me a while to figure out one of the tricks (will not tell precisely which one here, not to spoil anything...), but I finally saw the light ! Great construction and great use of prime numbers as a hidden constraint ! Loved it !
Reply: Yay! So glad to see you finished and that this puzzle has an official rating now! Now that it’s been a few months, I need to try it again as I have forgotten many of the tricks!
on 5. February 2022, 18:57 by kolot
Very enjoyable puzzle again!
on 4. February 2022, 18:03 by marcmees
enjoyed that. thanks.
on 4. February 2022, 16:14 by twobear
Fantastic puzzle. Thank you!
on 4. February 2022, 14:26 by MagnusJosefsson
Great puzzle! Highly enjoyable, just like the first one.
on 4. February 2022, 12:34 by Jesper
Again very nice, thanks!
on 4. February 2022, 05:56 by kolot
It seems like the 700 clue didn’t work out very nicely. ;) I should give this one a try.
on 4. February 2022, 04:34 by RockyRoer
Updated rules
on 4. February 2022, 03:41 by RockyRoer
Corrected solution code description for English version
on 4. February 2022, 03:33 by RJBlarmo
Solution code should say column 4, not row 4. Great puzzle!
on 4. February 2022, 03:11 by RockyRoer
Adjusted difficulty and added link to 7x7 version.
