Passed all the tests but GUI still have no response

Hello, i have passed all the daily tests and public tests, but when I use the command ./run_gui.py . It will only jump out of the starting page, and it have no response to the keystrokes. Where should I start my self-examination, any suggestions?
Any help would be apreciated.

I had the same problem a few days ago.
My problem was, that I could not move, if there was a tile in the most right column (this seams not to be covered in the daily tests, and is not covered in the unmodified public tests). You can simply check, if this is your Problem, by editing the public test (Just play a little and think about some “edge-cases”).
So overlooking the three move subroutines is probably the most promising way to find your bug.

Regards Simeon

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Thanks for the suggestion, indeed I am also checking if I overlooked some boundary conditions. I think there may be a flaw in the border of loop in my move_check. I will check my code again.
Thanks again.

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