Packing problems

378 unit squares in a square

Unit squares; smaller container side is better.

378 unit squares in a square

This arrangement

19.942019

Container side · 8 significant figures

0.00244% smaller container side than the value listed in Francisco Couzo’s catalogue on 19 October 2026.

Comparison recorded 19 October 2026
ArrangementContainer side
This arrangement19.942019
Francisco Couzo’s catalogue19.942506

Difference: 0.00048675567 smaller side.

Compared with the exact certificate linked below.