Thanks for your posts. First, I made a tiny change with a big consequence: I thought, 2 loops were enough in GetPossibleNumbers, but it didn't solve this classic Sudoku https://www.youtube.com/watch?v=9m9t8ie9-EE without a bifurcation. Now, with just one more loop, it gets the solution! I added "Fix...

I can't reproduce the error, maybe the tabspace in the menu item name causes the problem? Anyway, I left away the disabling and enabling of the menu item, so it can't happen again. The disabling isn't necessary because the hotkey for coloring numbers already prevents the coloring of colors.

Maybe you clicked on a cell, thought you had "selected" it, then moved the mouse a little and then pressed a number key? That would explain it.
You don't have to click, just move the mouse and press the number keys.

PS: There are mouse button menus now, so it works either way.

1. Play -> Clear board
2. Set numbers/colors with the left mouse button or the number keys.
You can save Sudokus with Sudoku -> Save as... but you can't add Sudokus to the Sudoku menu.

Shows numbers or colors and pencil marks. Detects X-wings, Y-wings, empty rectangles, Swordfish and chains and explains the solution. Generates random Sudokus and creates Sudoku images. 10 beautiful Sudoku images are included. #NoEnv #singleinstance off SendMode input SetTitleMatchMode, 1 SetBatchL...