6-Block Slide Puzzle

What’s in the download

• box– box with slotted top opening
• block – rectangular block (print 6×)
• support_plate – small plate to snap off the built-in supports
• grate– sliding grate with the slot for inserting blocks

Goal
Slide all six blocks through the top slot so they lie flat inside the box.
There is only one sequence that works—rotate and shift the blocks until everything clicks into place.