Prime Suspect
(Published on 4. July 2026, 13:44 by billybeth)
No prime number can see any other prime number a chess knight's move away.
White dots join numbers one apart, black dots join numbers in ratio 1:2, Xs join numbers that sum to ten and Vs join numbers that sum to five. Not all dots, Xs or Vs are given
Solve online:Sudokupad
Solution code: top row
Comments
on 5. July 2026, 23:54 by Fool on Hill
Beautifully done, and nowhere near as hard as it looks once you get the idea of it.
on 4. July 2026, 17:21 by galium_odoratum
Wow, this was brilliant, such a pleasure to solve. I created a puzzle with the similiar rule leading to the same logic a while ago, so this was 2* star to me. Without that knowledge, it is at least 3* for sure.
Hi Galium thanks for the comments. We did your puzzle - it is great. many thanks. billybeth
