Anti-Anti-Knight (Whispers/XV/Kropki)
(Eingestellt am 28. Juli 2026, 09:02 Uhr von Kutsumi Hane)
Rules:
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·Toroidal Grid:
The grid wraps around both horizontally and vertically;
·Anti-Anti-Knight: Every cell has at least one knight-move neighbor with the same digit;
·German Whispers: Adjacent digits on green lines must differ by at least 5;
·Kropki Dots: Black dots indicate a 1:2 ratio between the digits;
·XV: Digits separated by an X sum to 10, and by a V sum to 5.
Here you can solve the puzzle online:
The difficulty is probably 2-3 stars. I wish you joyful solving!
Hint:
| · | Start with the high-low alternation on each German Whispers line. |
| · | During the solve, it may be helpful to check each cell's candidates against those of its knight-move neighbors – if a digit doesn't appear in any neighbor's candidate list, it can't go in that cell. |
Lösungscode: Column 8
Kommentare
am 30. Juli 2026, 20:40 Uhr von Sudokujoker
Very nice design - a fun solve path and a great introduction to the concept of a pro-knight constraint. Thanks!
am 29. Juli 2026, 14:25 Uhr von LeaVulpina
Very nice! A little brain-bending to scan, but fun the whole way through!
am 28. Juli 2026, 11:55 Uhr von philolologue
This was insanely fun! Not sure I'd give it 3 stars for difficulty, closer to 1.5 stars, no difficult deductions or places to get really stuck, just pure fun chasing the constraints, took about 25 min for me. Don't be intimidated by the toroidal constraint, just mentally transpose any edge column or row to the opposite side of the grid to visualize the cells a knight's move away.
am 28. Juli 2026, 10:41 Uhr von Kutsumi Hane
Editor's note: The solution code has now been simplified.
am 28. Juli 2026, 10:27 Uhr von wuc
Refreshing puzzle. Loved the extrapolation logic. Great setting thx. (Solution code long for smartphone)
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Response from Kutsumi Hane:
Thanks! Appreciate the feedback. I'll trim the solution code down to a cleaner version right away. Glad you enjoyed the logic and setting.
