Japsum is 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.
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.
Also known as ... Cross Sum Puzzle, Cross Sum Game, Logic Game, Logic Puzzle, Math Game, Mathematic Game, Cross Addition Credits ... kakuro online, badboy niceforms
