Solution to:
Alien Alert
Yes, all individuals can reach the other planet!
Consider the following abbreviations for the individuals:
 F = Federation Officer
 A = alien that can fly the space ship
 a = alien that cannot fly the space ship
Then the flight schedule to reach the other planet is the following:
planet 1 flight planet 2
F F F A a a
 A a >
F F F a A a
< A 
F F F A a A a
 A a >
F F F A a a
< A 
F F F A a a
 F F >
F A F F a a
< F a 
F F A a F a
 F A >
F a F F A a
< F a 
F F a a F A
 F F >
a a F F F A
< A 
A a a F F F
 A a >
a F F F A a
< A 
A a F F F a
 A a >
F F F A a a
back to the puzzle
