Logic Masters Deutschland e.V.

Irregular sudoku rules apply: Each row, column, and region contains each digit 1-9 exactly once. Each region consists of an 8-cell “doughnut” and the “doughnut hole” with the matching “glaze.” The marking of the doughnut hole simply shows which region it belongs to; doughnut holes are not constrained by line type.

Renban: Digits on the pink line contain a non-repeating set of consecutive digits in any order.

Entropy: Every set of three adjacent digits on the peach line contains one low (1-3), one medium (4-6), and one high (7-9) digit.

Kropki: Digits connected by a while kropki dot are consecutive. Not all possible dots are given.

German whisper: Adjacent digits along the green line have a difference of at least five.

Dutch whisper: Adjacent digits along the orange line have a difference of at least four.

Modular: Each set of 3 adjacent digits on the teal line contains one digit from each set {147}, {258}, {369}.

Odd/Even: Adjacent digits along the red line must have different odd/even parity.

Killer: Digits in a killer cage do not repeat and sum to the number in the top-left corner.

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