Boston Subway Maze

Boston Subway Maze was named by Dave Rossetti, who used it as an exchange puzzle at the International Puzzle Party in Boston, 2006. George Miller and Dave developed a laser-cut acrylic version with a one-way trap to reset the puzzle, based on my design from 2005. The puzzle has ten horizontal lines and ten vertical, which are linked at some places by holes where the ball can go through. The object is to get the ball out. The name of the puzzle refers to Boston's historic subway system, where four lines form a square in Boston's  center. Up to this day, there is no connection between Boston's red and blue lines.

Watch the YouTube video.
Read more at the Shapeways Forum.
Read more at the Non-Twisty Puzzles Forum.

Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.