Function and Array (Match-3 like game)

https://docs.google.com/file/d/0B3iZ60F3QWxTWnJQb19EM3lmyZTA/edit - the capx.

Good day! Again, I'm stuck at this logic. As you can see, sometimes it work and correct blocks are destroyed, sometimes it work terrible , and sometimes it show message that stack is overloaded, but I don't see the reason, because there are no infinite recursions.

The logic have works as: when you touch block, it call function with it's position in array params and it's index param. Then, function go in 4 directions (up, down, left, right) with step = 1 and when it found the value it call same function but with current params (like recursion).

Anyway, I'm find my mistake with overload stack (there was jumping away from array size)

But the logic still pick incorrect blocks. I really don't se the reason. It just compare frames. Please, look at the "ckeck" function

--------

solved