Logic Masters Deutschland e.V.

by Maya

Solve on SudokuPad

Constraints

Quattro Quadri: Place the digits 1 to 9 once each into the 3x3 boxes. Digits may not repeat in the same row, column, or box.

Renban Lines: Digits along a Renban line must form a set of consecutive digits, with no repeats.

Quadruples: Digits in a quadruple circle must be placed at least once in the four cells touching that circle.

Kropki Difference Pairs: Cells separated by a white dot must be consecutive.