Entry Exit [ENEX-4-009P]
Similar Puzzle Books
1000 Loop Logic Puzzles – Collection I
US, CA; UK, DE, FR, ES, IT, other 
Puzzles in this book: Masyu, Country Road, Kanjo, Koburin, Every Second Turn, Double Back, Geradeweg, Scrin, Balance Loop, and Entry Exit.
Loop Logic Puzzles – Collection III
US, CA; UK, DE, FR, ES, IT, other
Puzzles in this book: Linesweeper, Castle Wall, Detour, Shingoki, Every Second Turn
