Combo CubeA combination of Peters Black Hole and the Rubiks Cube.
Get StuckA 3x3x3 with six moving-hole-puzzles on each side. The goal is to get stuck.
Polo CubeA puzzle combining a 2x2x2 with a Sliding-2x2x2 which therefore lacks one cubies.
Polo GliderThe concept of "Alex Black Hole" with restricted moves but combined with a 1x2x2.
Polo SlideA 2x2x2 combined with a moving-hole-puzzle.
Slide AlongCould be viewed as another variant of Peters Black Hole but this wouldn't do the ingenuity of the mechanism any justice.
Twist & SlideA 2x2x2 combined with a moving hole (aka sliding piece) puzzle.
Twisty&Sliding PuzzleThis puzzles combines the Rubiks Cube (aka 3x3x3) with a SlidingBlocks-Puzzle like Magic Jack.