Logic Masters Deutschland e.V.

High Six: In each 6x6 grid, place the digits 4-9 once each in every row, column, and box.

Anti Pairdoku: No digit may occupy the same position in both grids.

Ratio Kropki: The cells separated by a black dot are in a 1:2 ratio.

German Whisper Pairrows: In a cell with green arrows the digit, N, which is placed in that cell indicates that the cells exactly N moves away in the directions the arrows point must contain digits that differ from N by 3 or more.

Renban Pairrows: In a cell with pink arrows the digit, N, which is placed in that cell indicates that the clue cell and the cells exactly N moves away in the directions the arrows point together must form a set of non-repeating consecutive digits.

Linked Torus: The two grids combine to form a torus; an arrow that points beyond the left edge of one grid will re-enter from the right side of the other grid, and an arrow that points beyond the bottom of one grid will re-enter the other grid from its top. The coloring reflects this.

For this reason it is possible for multiple arrows from a clue to point at a single cell (or even at themselves). A renban arrow considers the set of cells indicated by arrows, not the set of arrows, so if a cell is seen by multiple arrows, that does not count as a repeated digit for the renban.

Click the puzzle to play!