SHARDS was inspired by a wooden version of this puzzle. This wooden version was in turn inspired by other similar wooden puzzles that the authors discovered while traveling in New Zealand. If you have ideas for puzzles that you would like to have included in future versions of SHARDS, then please send them to us: Mike and Pat Dooley 17 Azalea Dr. Mill Valley, CA 94941 USA If we use your idea, we will give you credit here in the "About this puzzle" window.