Briansk ringsAnother derivative of the hungarian rings produced in the USSR.
Color Exchange20 pieces on two separate rings and one moveable plunger.
Figure EightA derivate of the Hungarian Rings from the soviet era.
HeartacheA puzzle with sixteen moving marbles. It came out three years before Ernö Rubik invented the cube.
Monroe's MarblesMove the marbles from one column to the next by tilting and turning. Try to get each column a single colour.
Vergo 24-CubeA Little Chop combined with a moving-marbles-puzzle.