LOGICAL BRAIN TWISTER Russian patent published in 2010 - IPC A63F9/08 

FIELD: entertainments.

SUBSTANCE: invention relates to the field of home games and may be used in various quizzes as competition toy. Logical brain twister represents a icosahedron made of twenty equilateral faces installed with the possibility of motion in crossing slots of inner angle. Inner unit is arranged in the form of ball. Equilateral faces are arranged with truncated end side at sixty nine degrees for coupling with neighbouring faces. Equilateral faces have T-shaped support for motion of face in guide slots of inner unit with the possibility of simultaneous motion of five faces around their top, subsequent to displacement of previous five faces around their axis of rotation, one of six axes. In stationary position all faces with their T-shaped support are in crossing of guide slots.

EFFECT: game trains speed of thinking.

17 dwg