Coffin’s Four Piece Cube

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

Puzzle Trick Locks – Haleslock 4 & Chinese Combination Locks

Haleslock 4 Apart from being hosted in the beautiful city of Paris, France, IPP37 is also an event to remember for the wonderful exchange puzzles; most notably the exchange of not one, not two but Read More