Another satisfying session of visual debugging.

I created a little app for first-graders to practice addition. They seem to enjoy these sudoku-like puzzles, and we ran out of them in the workbook.

Generating gets a little subtle. I thought I was done, but the totals were >10. Trying to fix that generated invalid puzzles, and I had to ping-pong a bit between the two.

All through, it was nice to try out different straight-line solutions and animate them as I tested.

This post is part of my Freewheeling Apps Devlog.

Comments gratefully appreciated. Please send them to me by any method of your choice and I'll include them here.