Impenetrable Knot Sequential Discovery Please understand the number of

Please understand the number of this puzzle that you can purchase is limited to one until the end of 2019

#01 had a level 5-11-4-3-3 solution and he thought that it was a bit mediocre for our regular product since there were lots of high-level burr puzzles in the puzzle world when we put one of the miniature versions on eBay auction in 2018

What if she replaced these holes with moire patterns

The compartment of the puzzle also has another heart shape

the orientation of the pieces is restricted and it gives a unique level 10-2 solution to the puzzle

Impenetrable Knot Sequential Discovery Please understand the number ofThis puzzle requires 11 moves to remove the first piece from the assembled shape and it makes you think that the puzzle is relatively easy considering modern high level burr puzzle designs. And then once you start playing with the puzzle, it changes the shape dramatically and the configuration of the puzzle pieces is difficult to comprehend. Many people will somehow succeed to disassemble the puzzle in a rather short time even not knowing which piece