I would like to see added to Angus Johnson's Sudoku Solver the option
to underline candidates. For example, in the following partial puzzle:
*4* **5 **3
9*2 7** *4*
*1* 44* **6
row 3
columns 4 and 5, one of these must be a four, so I wonder how much
programming would be involved to add this capability to underline at will.
Any takers, believers, or gainsayers???
Just my 2 cents...