Skull Puzzle

Let me see. Alas, poor Yorick! I cannot figure out how to reassemble him.

See here for video: https://youtu.be/tiF3k-c1-yY

See here for stable download: https://than.gs/m/941044

This puzzle is part of the family of different “6-Piece Burr Puzzle” configurations. This is a “Level 1” design because one piece needs to be moved (“unlocked”) before you can begin to disassemble the puzzle. Taking it apart is tricky, but putting it back together is much harder!

Can’t figure out how to fit the pieces fit together?
See here for an instructional model: https://social.thangs.com/m/617380
And here for an instructional video: https://youtu.be/UcFXx5P6eX4

Similar puzzles:
Ripple Ball Burr Puzzle: https://social.thangs.com/m/617381
Valentine’s Heart Puzzle: https://social.thangs.com/m/639563
Anatomical Heart Puzzle: https://social.thangs.com/m/693398