Logic Masters Deutschland e.V.

Box borders divide blue region sum lines into segments with the same sum. Sums may be different for different lines.

Adjacent digits on an orange Dutch Whispers line have a difference of at least 4.

Adjacent digits on a red parity line must be of different parity (odd/even).

Digits along a pink renban line form a set of consecutive digits in any order.

Digits in a circle (quadruple) must appear within the four surrounding cells. Additionally, one of the digits in a circle is equal to the exact number of surrounding cells that see an identical digit a chess knight's move away.

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