Basically works, although the color feedback for numbers guessed isn’t 100% accurate. Only 2 levels so far but more can be added with 9 lines of DATA per level (0=blank) added after the others at the SUDOKU: label.
I found an Error:
Index out of Bounds:
Love it! Unfortunately came across an error. Put a 9 on the center-left grid and it gave me an error:
INDEX OUT OF BOUNDS