A No Problem Original:
The goal of this puzzle is to pack three square tetrominoes and three P-pentominoes in a circle. A straightforward task, but in order to achieve this ingenuity is required.

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NP Puzzle: 3 OP ✱✱

Tray(old).stl

A No Problem Puzzles Orignal:
Warding off any wrong attempt to pack the four pieces in the box and close it, will have Keep It Shut disapprovingly re-open it's lid automatically as a way to show the packing is rejected.
The higher goal is to pack and move the pieces in the box so that the lid remains shut.
In the inner space of 3x3x3, many different packings (around 6K) are possible, however there is only one solution.

NP Puzzle: Keep It Shut!

3330131_Box_pla_SkyBlue_qty1.stl

3330132_Pieces 150.20.5_pla_Yellow_qty1.stl

A No Problem Puzzles original:
The goal of this new puzzle is to put the four polycubes in the 'garage'.
Because of the hinge lifting mechanism, during opening and closing the single panel garage door will obstruct the top of the opening side of the box, As it turns out, this is not the only hurdle to take when solving this unusual puzzle.

NP Puzzle: Garage Box

Garage-box_base_1x.stl

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NP Puzzle: 3 OP ✱✱

NP Puzzle: Keep It Shut!

NP Puzzle: Garage Box