crosssum 0.02

crosssum project is a puzzle game to design and play cross sum games.

A cross sum puzzle is similar to a cross word puzzle, only the clues are the sums of sequences of single-digit numbers.

When in playing mode, you change the numbers by clicking on the square you wish to change. The number for the square is dependent on the position in the square that you click. Verifying play mode is identical to play except erroneous answers are highlighted.

In desiging mode you can change a square from an answer square to a blank square by clicking on it. One click toggles it. When you finished designing, use ^r to compute a puzzle for the board Squares are mirrored, if you want to override this press CTRL
while you click

The rules are:
1. Sums must be formed from strings of [1,9] with no dups
2. The grey squares are the answers, numbers above the diagonal are the answers for the sum to the right numbers below the diagonal are the answers for the sum below.