Logic Masters Deutschland e.V.

• Normal Sudoku rules apply.
• The digit 4 may not appear in any cell with any of the following additional constraints:
  • Renban - The purple lines contain a set of consecutive digits.
  • Kropki - Cells separated by a white dot must be consecutive. Not all dots are given.
  • Fortress - Digits in cells shaded grey must be greater or less than all neighbouring unshaded cells depending on the inequality shown.
  • Arrow - Digits along an arrow must sum to the digit in that arrow's circle.
  • Thermo - Digits along thermometers must increase from the bulb end.
  • Odd - Cells with grey circles must contain odd digits.
  • German Whispers - Along green lines, adjacent digits must have a difference of at least 5.
  • Killer - Digits in the cage must sum to 4!

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