Logic Masters Deutschland e.V.

Hailstone

Rules:

1. Standard: Normal sudoku rules apply.

2. Diagonal: Digits may not repeat on the main diagonals.

3. Killer: Digits in cages sum to the clue in the top left corner. Digits may not repeat within a cage.

4. Little killer: Clues outside the grid give the sum of digits on the indicated diagonal. Digits may repeat on such a diagonal if allowed by other rules.

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