Dr. Gareth Moore 
Space Puzzles [PDF ebook] 

Don’t panic, but you’re alone on a space ship roaring away from Earth! Solve a series of puzzles to pilot the ship to the Moon, then refuel for the return to Earth. Devised by an expert on brain training, these mental gymnastics will help you survive your outer space ordeal! You can’t skip a challenge, but there are hints to help and full answers to get you on your way.