New version 2.

Cross Sums - create puzzles

Create and solve an endless number of puzzles

5 difficulty levels, 3 grid sizes
All puzzles have a unique solution
Store 100 puzzles at a time
Save partially completed puzzles
Print puzzles with or without answers

Cross Sums - solve puzzles

Solving techniques explained with examples
Click to fill numbers in grid
Toggle possible values on and off
Click to show all possible values for a total
Zoom screen to required size
Print partially completed puzzles

Limitations:

Limited Features