1. Nonconsecutive: Digits in orthogonally adjacent cells must not be consecutive
2. Anti-knight: cells that are a knight's move apart (in chess) must not contain the same digit
3. Anti-king: cells that are diagonally adjacent must not contain the same digit.
Solution code: Row 9 (from left to right) followed by column 2 (from top to bottom) with no spaces (ie 123456789123456789)
on 7. August 2020, 18:45 by argl
Solve link: https://f-puzzles.com/?id=y2xdo26y
When you discover which constraint applies, click Mode:Solving button and select it so that the check function will work.
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