Normal killer Sudoku (so, as usual, numbers cannot repeat in a cage). In addition, numbers outside the grid indicate the sum of cells "sandwiched" between the 1 and the 9 in the relevant column/row.
Normal killer Sudoku (so, as usual, numbers cannot repeat in a cage). In addition, numbers outside the grid indicate the sum of cells "sandwiched" between the 1 and the 9 in the relevant column/row.