Logic Masters Deutschland e.V.

This was my entry for Scojo's setting imposter prompt. This was the puzzle set in my own personal style. I have a soft spot for double arrows and ambiguity so it seemed natural to combine them. I unfortunately did not win. Nell_Gwyn set an excellent puzzle in a very similar style. Do give that a go as well. Good luck!

• Normal sudoku rules apply: Place the digits 1 to 9 once each in every row, column, and 3x3 box
• Double Arrows: Digits along a grey line sum to the same as the sum of the two connected circles
• In addition, each of the following constraints applies to exactly one double arrow in the grid, including its circles:
  • Entropic: A run of 3 digits must contain one low (1, 2, 3), one medium (4, 5 6), and one high (7, 8, 9) digit
  • German Whisper: Adjacent digits differ by at least 5
  • Modular: A run of 3 digits must all contain different remainders when divided by 3, i.e. one from (1, 4, 7), one from (2, 5, 8), and one from (3, 6, 9)
  • Palindrome: Digits read the same forwards and backwards
  • Renban: Contains a non-repeating set of consecutive digits in any order

Play on Sudokupad

Download full solution guide (PDF)