Japsum

About Japsum
A kind of logic puzzle very similar to kakuro with the main difference that the empty fields are not known and have to be solved too.

Kakuro has following rules …

- A number can only appear once in a row and column.
- The numbers in a row or column have to result the summations on the left and top.
- Every summation is a group of numbers seperated by a empty field.
- A sum can also be a single number.