In this puzzle, you are given the product of the digits in each entry. Digits can be repeated in an entry, but each cell contains a single digit from 2 through 9 (0 and 1 are not used, though there is a variant in which 1 may appear once per entry).

Otherwise, it is very similar to Cross Sums. If you have a two-digit entry with product 35, you know the digits will be 5 and 7 but you need to use crossing entries to determine which digit goes where.