Tren [TREN-5-005P]
Example
Tren Puzzle Archive 
Similar Puzzle Books
Grid Placement Logic Puzzles – Collection I
US, CA; UK, DE, FR, ES, IT, other
Puzzles in this book: Star Battle, Lighthouses, Slant, Hakoiri, Not as Easy as ABC
Solitaire Battleships and Variants
US, CA; UK, DE, FR, ES, IT, other
Puzzles in this book: Classic, Minesweeper, Lighthouse, Retrograde, and Digital Battleships
Grid Placement Logic Puzzles – Collection IV
US, CA; UK, DE, FR, ES, IT, other
Puzzles in this book: Tents and Trees, Eulero, Stars and Arrows, Shakashaka, Trinairo
