Diamondback
(Published on 10. August 2026, 11:57 by IcyFruit)
Normal sudoku rules apply.
A digit in a large diamond indicates the number of cells it can see in its row and column that are larger than itself, where digits smaller than itself block vision.
A small diamond separates two digits whose difference is a multiple of three.
Solution code: Column 7
Comments
on 1. September 2026, 10:47 by amirs
Beautiful!
on 18. August 2026, 14:54 by Myles1651
Clever, elegant, and highly enjoyable.
on 17. August 2026, 06:20 by Crusader175
Fun puzzle!
on 15. August 2026, 09:17 by CarnacTheMagnificent
This was a tough, but magnificent puzzle. It took me 2 hours and 15 minutes to solve. I used colors to keep track of the "vision" and "blocker" cells for each large diamond. Thanks for sharing.
on 15. August 2026, 02:17 by Ramez
The scariest name in the world of sudoku is having mercy on us with a 3-star puzzle. Such a rarity. I am (and definitely many others are) very glad that you're back to the scene. CTC Simon will be thrilled to hear the good news.
on 12. August 2026, 03:05 by econtrout
Very neat ideas. I struggled a bit.
on 11. August 2026, 22:42 by Djirt
С возвращением, прекрасное судоку!
on 11. August 2026, 04:04 by Silverscree
I wouldn't quite say "approachable", but certainly enjoyable!
I liked that I never quite felt stuck because there were so many easy-to-investigate paths in front of me. Scratching at the surface of any of them would always give me just a bit more information and I was able to carve the solution out of the block of ice after a good 45 minutes!
on 11. August 2026, 03:10 by Snookerfan
Gorgeous! Quite approachable as I solved it in a 3 star time. Thanks and happy to see you back!
on 11. August 2026, 02:01 by Chaka
Wow... what a great puzzle!
on 11. August 2026, 01:38 by emoney1374
Great puzzle! Really enjoyed this one
