Logic Masters Deutschland e.V.

Kernel

Rules:

• Irregular sudoku: Each row, column, and 9-cell region must contain every digit from 1 to 9 once each.
• Killer: Digits in a cage sum to the clue in the top left corner, and may not repeat.
• Arrow: Digits on an arrow must sum to the digit in the connected circle.

Solve on f-puzzles or CTC.