MARBLE & EQUA Hanayama Cast Metal Brain Teaser Puzzle Pack _ Bonus 2 Black Velveteen Drawstring Pouches _ Bundle MARBLE and EQUA - Two of most difficult and popular disentanglement puzzles from the Hanayama Puzzle Company of Japan. Marble Objective: Separate and then rejoin the four pieces. Level 4 Difficulty.. (where level 1 is easier and level 6 most difficult). Your experience could differ. Equa Objective: Separate the moving middle pieces from the frame. Then rejoin. Level 5 Difficulty. Small, compact, beatifully designed brain teaser puzzles. Each individually boxed. Bonus: 2 (two) Black velveteen cloth drawstring storage pouches. Measure e approximately 4 x 5 inches laying flat.