Allard's Think Sticks
"Allard's Think Sticks" was Allard's IPP 40 Exchange Puzzle. You'll soon be able to read more about it on Allard's Puzzling Times blog
Allard's puzzle, finished our development of solid cylindrical burrs, by introducing a set of pieces that can make eleven different 9 piece assemblies. It joins Pygmy and Marmoset which make 13 piece assembles and the (relatively) new Burrly Legal puzzle with 18 pieces.
The puzzle was presented in a sealed tin can :
This Burrtools File contains the problems and solutions.