Japanese Sums #2: Balance
(Published on 26. April 2023, 21:10 by Myxo)
The second entry in this series of Japanese Sums puzzles changes the range of digits to include negatives and zero, which puts a twist on the classic Japanese Sums logic. The unusual ruleset might make this one a more challenging entry. Enjoy!
Rules:
Shade some cells of the grid and fill all unshaded cells with integers between -4 and 4 (including 0), such that no number repeats in any row or column.
Clues outside the grid indicate the sums of contiguous segments of unshaded cells in that row or column. There must be at least one shaded cell seperating two segments. All such sums are given and in the correct order.
?s stand for any digit 0-9, but double digit numbers may not start with a zero. No clue can be -0.
Solution code: row 7 and column 8, S for shaded cells
Comments
on 22. March 2024, 20:17 by Lucx
Tolle Konstruktion! Vielen Dank!
on 25. November 2023, 10:48 by ibag
... tolle ...
on 10. November 2023, 17:27 by Christounet
Nothing spikily hard for me neither, just a careful thinking and notation to no overlook some possible arithmetic combination. Very nice and smooth for me ! Thanks :)
on 24. October 2023, 00:52 by KNT
lovely puzzle, I found the difficulty consistent throughout. Not sure what other commenters are talking about with respect to a spike at the end.
on 8. July 2023, 16:34 by peacherwu2
A beautiful combo of parity and sums, IMHO!
on 6. June 2023, 19:29 by Playmaker6174
Plenty of fun! The solve rather felt surprisingly smooth for the first like 75% of the solve, then the parts towards the end required a bit more thinking but they weren't anywhere near unfair in my opinions :)
on 3. June 2023, 14:50 by filuta
that was really great, I only found the end a bit brutal
on 17. May 2023, 19:41 by Jaych
This was just fantastic. With the exception of the logic at the very end of the puzzle (which I'm guessing is contributing to sixty percent of the 5-star difficulty estimation), nothing felt too challenging.
on 27. April 2023, 13:09 by Piatato
Neat idea and a terrific execution! There's so many beautiful little realisations to be made, and the whole puzzle felt hugely rewarding throughout! :)
