Japanese sums/en

Instructions

   

Blacken some of the fields in the diagram and put digits from 1 to 9 into the other fields, so that no number appears more than once in every row or column.

The numbers at the borders give the sum of consecutive digits (without black fields in between) in the correct order. Single digits are also given.

 

Variants

• Crypto version: The numbers at the border are replaced with letters. Same letters denote same digits and different letters denote different digits.