Normal Sudoku rules apply. Adjacent digits along the marked grey lines have a difference of at least five. Clues outside the grid indicate the sum of all digits sandwiched between the 1 and the 9 in the respective row or column.
Normal Sudoku rules apply. Adjacent digits along the marked grey lines have a difference of at least five. Clues outside the grid indicate the sum of all digits sandwiched between the 1 and the 9 in the respective row or column.