I did it but by letting B fall on the win blocks. Can I get a hint for what you mean by "thread the needle"?
@ADM thread the needle Spoiler i presume it means flying the B craft through the gap in the far stone wall(that looks like a person with their arms raised) This was harder than the easy win.
@ridgerunner I also thought its the intended way but the rule 1 says "can't launch, game over". That's why I thought there is another way but I think what you said and my previous thoughts are both correct. Thanks for the help!
@ADM ..i thought “can’t launch game over” meant the launch window has been missed and the launching pad With B is now stuck up against the top of its travel.