Uploaded October 2025 | Updated September 2026, 3 days ago

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Can you build a perfect 4×4×4 cube using only 20 oddly shaped pieces? 🧩

This ingenious puzzle features:

4 × 1-block piece
4 × 2-block piece
4 × 4-block piece (type A)
4 × 4-block piece (type B)
4 × 5-block piece

Your mission: fit all of them into a tray to form a flawless cube with no gaps. Sounds easy — until it isn’t! In this video, I explore the design, attempt the build, and reveal the final satisfying solution to this 3D brain teaser.

Perfect for fans of mechanical puzzles, spatial reasoning challenges, and True Genius–style wooden puzzles.
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00:00 Introduction
1:20 Layer 1
1:56 Layer 2
3:00 Layer 3
3:27 Layer 4
3:51 Completed cube

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