Cast Equa - Game Rank 5
The two semi circles can be separated and removed from the frame.
This dynamic cube is one of our hardest, and also happens to be one of our favorites. The Koncy Puzzle contains six pieces. Nothing connects these pieces to each other, or lets the cube retain its form, besides the unique and unconventional shapes of the pieces themselves. Dismantling this cube is a very complex and gentle affair. It should be done one step at a time, and is difficult in and of itself.
The 6 pieces slide apart and return to a cube. It is important to note the last piece to come apart as it is the last to be inserted as the cube is reassembled.
With 3 different objectives this is the perfect game for any coffee table. See how many solutions you can find for the triangle and the two three dimensional pyramids.
The triangle can be filled any of 24 ways, and once complete the pieces can be used to make a 4x4x4 pyramid using 20 balls and a 5x5x5 using all the pieces except the single ball.
Cast Square - Game Rank 6
This puzzle can be assembled into three different color combinations. Beware this puzzle is complicated by internal mechanics.