IMHO levels 10&11 are the interesting parts of the game. I solved lvl10 by separating what each part of the program did. F1 carried the robot from origin to as far as possiible. F2 from that point to the further bluetile. Then I managed to get the main progrram to execute F1, go back to origin, execute F1 AGAIN and then F2. Tricky, but it worked.
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