The goal of the puzzle is to get the spade out but also find all 3 hidden drawers where you can hide a reward for each step

Note: This probably needs a very accurate tolerances. If it's not working for your printer, please feel free to edit them in the .step file

This was printed on a Prusa Mini+ and tolerance was set accordingly. Depending on your printer you might have to sand a bit or feel free to remix the OBJ files 

Print instructions: 

• 0.20 mm layer height
• Some parts need minimal support and I found Prusa slicer's “automatic painting” feature does the job
• Each part x 1 but Pins x 9
• (Optional) Stand
• Color the A and small Spade if you don't have multi-color 

Assembly instructions with a GIF:

• Place Lower Cover down
• Put the Latch on the sliding hole
• Position the Lower Drawer inside it
• Prepare the upper drawer and the smaller hidden drawer
• Place it on the top lower drawer so it fits flush
• Close with Upper Cover
• Use the 9 pins to lock them in place
• Put the Ace in it's socket at the top

The pins fit tight for me but can be removed(one by one) with force so maybe consider supergluing to avoid brute-force attempts :D 

Solution with a GIF: 

1. Push the latch(central black) up to unlock open the lower drawer
2. Close the lower drawer
3. Push the latch up to unlock the upper drawer
4. With the upper drawer open, push the Ace down out of its socket
5. Ace will lock in the last hidden drawer and unlock it
6. Profit! 

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