Broken Pencil
(Published on 17. September 2022, 19:05 by the_cogito)
Rules:
- Normal sudoku rules apply.
- Digits along a light blue region sum line must have an equal sum within each region the line passes through.
- Every row, column, and box contains exactly one negator cell. The digit in a negator cell acts as the negative of its value for the purpose of any region sum line that passes through it (eg, a 4 in a negator cell would instead act as -4). The location of these cells must be determined.
- Digits in negator cells must be unique from one another, and contain the digits 1-9.
Solve of f-puzzles
Solve on CTC App
Solution code: Row 2, then Column 2 (18 digits, no spaces)
Comments
on 27. November 2022, 22:58 by Christounet
Loved it ! This one might look complex at first sight, but it proves to be quite approchable through the use of very basic arithmetics for the deductions. I like it when the focus is on the geometry. Makes for very pleasant solves. Thanks !
on 2. October 2022, 08:15 by PrimeWeasel
@madhupt maybe think about this again, mainly the 45 bit.
on 2. October 2022, 06:51 by madhupt
The puzzle is broken. The minimum sum on blue lines s 45-2-8-9(negator) = 26, which cannot have two cell sum in box 2 and 6.
Oops! How did I not see this? Blinkers, I suppose. Too fixated on the 45 sum, I think. :-)
on 23. September 2022, 16:39 by Jesper
Very smooth!
on 23. September 2022, 00:44 by Fool on Hill
This is a lovely puzzle to solve
on 21. September 2022, 08:08 by wooferzfg
Nice, fun, and fresh logic! Thanks for the puzzle.
on 20. September 2022, 19:59 by StephenR
Thanks, some very cute logic here.
on 20. September 2022, 04:59 by thoughtbyte
This was a wonderful introduction for me to this constraint, loved every minute of it. Thanks!
on 19. September 2022, 20:51 by mathpesto
Thanks so much for referencing my puzzle. This was a lot of fun to solve, visually striking, and very smooth! (Quite approachable unless you're like me and stubbornly look in the wrong places for a long time lol)
on 19. September 2022, 18:00 by Wessel Strijkstra
Great puz, refreshing idea and smooth solve.
on 19. September 2022, 17:57 by purpl
That was a lot of fun! You totally pranked me with this set up because I miscalculated something :D
on 18. September 2022, 10:38 by Schwupel
Great puzzle! All individual steps are not too difficult but very lovely at the same time. Top notch creation!
