HOW TO PLAY It’s like sudoku:

each vertical and horizontal line has to contain the numbers 1-6, and the numbers can’t be repeated in any row or column.

But it’s sudoku with a twist: The numbers in each heavily outlined set of squares, called cages, must produce the number in the top corner. For example, 5+ means the numbers add up to 5, 15x means the numbers multiply to equal 15.

TIP: remember that answers can be repeated in a cage, as long as they are not in the same line or row.