Packing problems
404 unit squares in a square
Unit squares; smaller container side is better.
This arrangement
20.614377
Container side · 8 significant figures
0.0337% smaller container side than the value listed in Francisco Couzo’s catalogue on 19 October 2026.
| Arrangement | Container side |
|---|---|
| This arrangement | 20.614377 |
| Francisco Couzo’s catalogue | 20.621320 |
Difference: 0.0069434512 smaller side.
Compared with the exact certificate linked below.