A

grid puzzle closely related to

Cross Sums.

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.