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74 Views • May 22, 2024 • Click to toggle off description
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@bliz85
3 months ago
4.
Probably not the most rigorous or elegant proof (if even correct):
Fit 4 T shapes in a 4 by 4 grid (should be trivial; 3 90° rotations). Now add a 4 by 1 row at the right of the 4 by 4 grid. Move any 1 the T shape in this new 4 by 5 grid. It is then impossible to move another T shape without overlapping.
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