Logic Masters Deutschland e.V.

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Rules:

Regular sudoku rules:

Place the digits 1-9 in every row, column, and box

German Whisper Lines:

Adjacent digits on a green German whisper line have a difference of at least 5.

X=10:

If an X appears between two digits, those digits must sum to 10.

Less-Than:

The Less-Than symbol (<) sits between two digits and points to the smaller digit

Main Diagonal:

Digits can not repeat along the Main Positive Diagonal.

Anti-King:

Digits cannot repeat within a (chess) king’s move.