Nice Game - Minor improvements needed – Calcudoku · Math Logic Puzzles Review

I like it a lot better than Mathdoku. It’s user interface is much friendlier. But a couple of enhancements would bring it up to 5 stars. 1. Number each game and have a timer. This way you can go back to work on difficult specific games and try to beat your previous times. 2. Have an “undo” button to sequentially allow you to go back and make corrections. This, to me, is more useful than the “erase” function (x) - although you should still keep this also. The undo function would allow a ‘permanent’ number to be erased, but your previous pencil marks would then be visible again.
Review by JRET60 on Calcudoku · Math Logic Puzzles.