Logic Masters Deutschland e.V.

Rules:

• 5x5 Latin Square: Place the digits from 1 to 5 once each in every row and column.
• Even Square: Digits in a grey square must be even.
• Doubler Snake: Draw a 1-cell-wide snake of orthogonally connected cells, which does not branch or touch itself orthogonally. Each cell on the snake is a doubler cell, i.e. it has a value equal to double its digit. Each cell that is not on the snake is not a doubler cell and its value is equal to its digit.
• Unique Prime Cages: The values in a cage must sum to a prime number. No two cages can have the same sum. Digits must not repeat in a cage. Each cage must be visited by the snake exactly once, i.e.:
  • Each cage must contain at least one doubler cell.
  • Once the snake leaves a cage, it must not enter the same cage again.

Enjoy!