Logic Masters Deutschland e.V.

Normal sudoku rules apply.

White go stones: if a single white stone is on a corner of a cell, the digit in the cell is the number of digits with the same parity as itself in the diagonal beyond the white stone.

Black go stones: if a single black stone is on a corner of a cell, the digit in the cell is the number of digits with the opposite parity from itself in the diagonal beyond the black stone.

Adding stones: If multiple stones are on the corners of a cell, the digit in the cell is the sum of the values computed as above for each stone.

White Kropki dot: if a single white dot is on the edge between two cells, these cells differ by one.

Play in the CTC App