ブレイクスルー (3M社のボードゲーム)
↑ Board Game Geek
↑ The Game Pile http://www.gamepile.com/details.php?id=3
↑ "How to Play Breakthru". Breakthru: Strategic Game of Evasion or Capture (1965). 3M Bookshelf Games. Minnesota Mining and Manufacturing Company.