Logic Masters Deutschland e.V.

Chinese Whisper Series 2/20.

Previous puzzles of this series:

Chinese Whisper 1: The Chinese Knotting 中国结 Difficulty: 4/5.

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This puzzle is not easy. It involves a variety of techniques in the break-in, the middle, and the end. Try to switch your mind after you get through every stage! Also, it is recommended to use the Killer Calculator in SudokuPad in order to keep track of the combinations of digits.

You can click the following image to play in SudokuPad. Have fun! :)

Rules:

1. Normal Sudoku rules apply. Fill the grid with digits from 1 to 9, so that digits do not repeat in any row, column, or box.

2. Killer cage: Digits do not repeat in a killer cage. If two cages are separated by a yellow Chinese Whisper dot, their sums differ by at most 2.