Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

Index Lines: On a blue line, the digit in the Nth position (starting from the diamond) indicates the position along the line where the digit N appears.

Parity Lines: Digits along a red line must alternate between odd and even.

Melding: Each line in the grid can be divided into two segments, each with a different rule as indicated on the line's ends. Each segment spans at least two cells, and the two segments meet at the center of one cell, to be determined by the solver.

Quadruples: A digit in a circle must appear in at least one of the cells surrounding that circle.

(Accessibility note: Each line in the puzzle is a melded Parity/Index Line. The Index Line begins at the end with a diamond.)

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