Logic Masters Deutschland e.V.

Play on SudokuPad!

Normal sudoku rules apply.

Mod 3 Arrows: A digit on an arrow indicates how many digits in the arrow’s direction have the same remainder when divided by 3, including the digit itself. (eg a 2 on an arrow means that exactly two cells in that direction—including the 2 itself—contain digits from the set {2, 5, 8}, since those digits all leave remainder 2 when divided by 3).

Summit Lines: Digits along a blue line must be ascending or descending, with 1 and 9 reversing the ascension/descension. (eg if digits along the blue line are 2-5-7-9-8-5 in that order, the sequence is ascending until the 9 causes a descension).

Antisocial Circles: Digits in a circle are not orthogonally or diagonally adjacent to any consecutive digits.