Antiknight: Any two cells separated by a knight's move in chess cannot contain the same digit.
Nonconsecutive: Any two orthogonally adjacent cells cannot contain consecutive digits.
XV: Digits separated by an X sum to 10, those separated by a V sum to 5. Not all Xs are necessarily given. ALL Vs are given.
Palindromes: Digits along a grey line must read the same forwards and backwards.
Solution code: Row 9
on 15. August 2026, 08:24 by nigel
The start is very hard. 200 minutes and I just realized dinner time was ages ago and I am hungry.
on 5. August 2026, 05:21 by Marius
Beautiful setting. Hard but doable. 4*
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