Anti-chess: Cells that are either a Knight move (in chess), or a King move apart cannot contain the same digit.
German Whispers: Adjacent digits along the green line must differ by at least 5
Renban: Digits along the magenta line form a set of consecutive numbers, in any order
Play here on SudokuPad
Solution code: Row 2 left to right
today, 14:12 by VitP
a miracle sudoku with ZERO given digits.
very nice, but there are a couple tricks in there that put it beyond level 1.
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