GAME-PUZZLE Russian patent published in 2006 - IPC A63F9/10 

FIELD: puzzles including assembling of patterns from quasi-unequal members.

SUBSTANCE: puzzle-game for assembling-disassembling of certain pattern has playing field and set of playing members with playing marks, said playing members being of three types. Playing members of first type have complicated geometric configuration, are minimal playing objects and define in combination a single maximal playing object. Playing members of second type have complicated geometric configuration, with the majority of sides of said members being rectilinear and having one or two curved sides making internal contour of maximal playing object. Playing members of third type are of complicated geometric configuration, with the majority of sides thereof being rectilinear and having one or two sides making game boundaries. Total length of rectilinear sides of playing members of second and third types is not equal to perimeter of geometric figure with rectilinear sides.

EFFECT: increased efficiency in developing logic thinking and prolonged service life.

6 cl, 1 dwg