This weekend I opted for a “simpler” interlocking cube to navigate. So I decided on Norton Starr’s IPP37 Exchange Puzzle, Coffin’s Four Piece Interlocking Cube, designed by Stewart Coffin, the latter’s design #93. For the Read More
This weekend I opted for a “simpler” interlocking cube to navigate. So I decided on Norton Starr’s IPP37 Exchange Puzzle, Coffin’s Four Piece Interlocking Cube, designed by Stewart Coffin, the latter’s design #93. For the Read More