Logic Masters Deutschland e.V.

Rules:

Place the digits 1-9 once each into every row, column, and box.

A digit cannot be a chess knight's or king's move away from itself.

A digit N on a circle counts the number of digits in the (up to 8) surrounding cells that are greater than or equal to N.

A digit N on a square counts the number of digits in the (up to 8) surrounding cells that are less than or equal to N.

Play on SudokuPad

Have fun solving!