Hi Dave,
Thank you for the bug report, I hadn't trouble with that but I have changed it now.
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(1) filtering on pairs - that is, cells with only two candidates. Simple Sudoku does this by changing the background color of the selected cell. I'm not sure if it is worth trying to implement in your program, it is only a minor convenience. A more important function is
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Should this be always or only in conjunction with the display of the small numbers? Wouldn't be that complicated.
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(2) Color tagging (or what ever you call it). There is an advanced solving method that involves the user coloring certain cells in different colors. Once in a while it is a big help in cracking a very difficult puzzle.
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Does this only mean to have a function allowing to change a cell's background color? Selecting a color and pointing onto a cell would change it's color ?
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Are you pursuing the solver engine? I found some VB code that solves Sudoku puzzles. Be glad to send it to you if you could use it.
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Yes I'm looking forward to add the solver, I would be pleased if you could send me the VB code,
Best regards.