Created attachment 152615 [details]
example of dissimilar pair being considered a match by Mahjongg

In the "Mahjongg Manual" it says:
"To remove tiles you have to find matching pairs which look alike. A matching tile will usually have the same number of buttons or markings on it or will look similar to each other."
http://library.gnome.org/users/mahjongg/stable/index.html.en

This is saying the tiles will be similar. I think this is proven a bad design, as you play you see that some times you have two distinct sets of pairs and both pairs are very similar to each other (except maybe a **small** green line). Then later (or as in the picture I'm attaching) you see the game considers a blatantly different set of pieces to be a each other's match.

I think it should be changed so that pieces simply have to be identical. In the future these slightly-differing or similar pieces can be incorporated maybe in *advanced* skill levels, so as to *cause* confusion (because the skill level is advanced) -- instead of causing confusion because the game is vague (as it is now).

Please let me know if I should clarify. Also, let me know if this is something I could fix myself (I take classes in C++, but have yet to do any real work with it and would love to help).