CHALLENGE: rotate 4 discs in order to obtain the same amount in all segments.
Difficulty: INCREDIBLE 5/6. Age 10+
Great brain teaser for real math genius or programmers
Dimensions: diam. 15 x 2 cm / diam 5,9 x 0,8 inches
Special Box Dimensions: 19 x 18 x 4 cm / 7.7 x 7.3 x 1.6 inches