The plate shaped pieces intervene with each other for the perfect balance. The pieces all fall apart instantaneously, unbelievable when considering all the straight moves you make with the pieces to take them apart. Designed by Yoshiyuki Kotani from Japan and Kirill Grebnev from Russia.
Hanayama is known worldwide for challenging puzzles and quality manufacturing. Can you take the pieces apart, then put them back together again? Hanayama cast metal brain teasers have 6 levels of difficulty, and each puzzle is Mensa-rated. Level 4 puzzles are considered challenging by most puzzlers.