Logic Masters Deutschland e.V.

Rules:

• Place the digits 0-8 once each in every row, column and 3x3 box.
• Each digit represents how many times (in the finished grid) it appears a knight's move apart from itself. (ie. there are exactly no 0s, one pair of 1s, two pairs of 2s...up to eight pairs of 8s, that are a knight's move apart).
• Same digits that are a knight's move apart are classed as "special".
• In cages, digits must sum to the small clue in the top left corner of the cage, but ONLY special digits are included in the sum count.
  Digits in cages may repeat.