Logic Masters Deutschland e.V.

• Normal sudoku rules apply: Place the digits 1-9 once each in every row, column, and 3x3 box.
• Cipher: Each of the letters A, B, and C represent a distinct digit from 1-9. Which letter represents which digit must be determined. A cell with a letter in the corner must contain the corresponding digit.
• Ambiguous Lines: There are 9 lines in the grid, each of a different type. Each line contains a red circle, and the digit in that circle indicates what type of line it is according to the list below:
• 1. Zipper: Digits an equal distance from the center of the line sum to the same total. If the line is an odd number of cells, that total is the digit in the central cell.
• 2. Palindrome: Digits an equal distance from the center of the line must be the same.
• 3. Thermo: Digits must strictly increase from circle to tip.
• 4. German Whisper: Adjacent digits along the line must have a difference of at least 5.
• 5. Entropic: Every group of 3 cells along the line must contain one digit from each of the following sets: (1, 2, 3), (4, 5, 6), and (7, 8, 9).
• 6. Index: The digit in the Nth cell along the line (starting from the circle) indicates the position along the line where the digit N appears.
• 7. Ten: The line must be able to be split into distinct segments which each sum to 10.
• 8. Modular: Every group of 3 cells along the line must contain one digit from each of the following sets: (1, 4, 7), (2, 5, 8), and (3, 6, 9).
• 9. Region Sum: Box borders divide the line into segments with equal sums.

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