Logic Masters Deutschland e.V.

Solve in SudokuPad

Normal sudoku rules apply.

Divisibility Purple Lines: Box borders divide the lines into segments. Every segment has exactly one value that divides the individual sums of all the other segments on the line, and the rest of the values on a segment do not divide any other segment sum. The value 1 is not allowed on any line.

Indexer Cells: Every row, column and box has 2 indexer cells, one indexing in the row and the other in the column. The digit in an indexer cell indicates the position of the other indexer cell in the row or column. Positions are counted left to right in the rows and top to bottom in the columns. The value of an indexer cell is the digit in the cell it indexes. The pair of indexers in any row or column sums to a non-prime.

Horse cell: There is one horse cell in the grid. This cell takes the value of only one digit that is a knight move (in chess) away from itself. The tracing of the indexers will reveal the horse cell. Until all indexers are in the grid, the horse cell doesn't exist.

A turquoise dot between 2 digits means they have the same parity. An inequality sign points to the smaller digit.