Secret Garden
(Published today, 17:28 by billybeth)
Normal Sudoku rules apply.
Digits in the set of 2, 3, 4 and 9 cannot see ANY other digit in that set a chess knight's move away.
Adjacent digits on green lines must differ by five or more.
Solve online : Sudokupad
4
Solution code: top row
Solved by kangaroo, zeniko
