Made by Mariusz Dabrowski, 2007.
(plastic, 1.5" square, 6.1" long)

Custom made by extending the center portion of a standard Missing Link puzzle from two to three sections (using parts from two puzzles) in such a way that these three sections cannot rotate with respect to each other (so like the standard Missing Link puzzle, only the two end sections of the puzzle can rotate). This extension does not change the basic complexity of the puzzle; it can be solved the same way as the standard version (and this remains true for an number of extensions of the middle).

This particular puzzle has solid ends with no holes or exposed parts (so stickers are not required on the ends to cover anything up) and a very smooth click-stop action. Here are what the other two sides and other end look like: