Logic Masters Deutschland e.V.

Rules:

• Normal sudoku rules apply.
• Windoku rules apply : the four 3x3 shaded boxes must contain all digits from 1 to 9.
• Modular lines: every set of three sequential digits along a line must contain a complete set of residues modulo 3, i.e. one digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}.
• Digits along lines may repeat if allowed by other rules.
• Digits in a cage must sum to the total given in the upper-left corner.
• Digits joined by a white dot must differ by the given difference.

Play online using CTC App or F-Puzzles