Name: Rubik's Delta Ball - Rubik's Brain Racker
Where to buy: Rubik’s Delta Ball – Rubik’s Brain Racker at Puzzle Master Inc.
Object: Move the twenty triangles (4 times 5 colored traingles) in the seven proposed shapes as indicated on the instructions (see also pictures at the bottom of this page). For Level 1 you don't have to worry about the numbers on each triangle. For level 2 you have to make sure that for the first six objectives the numbers are in the right place. And for level 3 (The Ultimate Delta Ball Challenge) make for objective seven, 12 overlapping pentagons of which each pentagon consists of the numbers 1 to 5.