Logic Masters Deutschland e.V.

• Normal sudoku rules apply: Place the digits 1-9 once each in every row, column and 3x3 box.
• Negators: Place 9 'Negator' cells in the grid so that there is exactly one Negator in every row, column, and 3x3 box. Each Negator cell must contain a different digit. The value of a Negator cell is equal to -1 times the digit it contains.
• Friendly Cells: A cell is considered friendly if its value matches one or more of the following: its row number (counting top to bottom), its column number (counting left to right), or its box number (counting in reading order starting from the top left). Negator Cells are not Friendly!
• White Kropki Dots: Values separated by a white dot must be consecutive. All possible dots are given.
• Killer: Values in a cage must sum to the total in the top left corner of the cage, if given. Values cannot repeat within a cage and all cages must contain at least one Friendly Cell.

Solve in SudokuPad