Packing unit squares in a square $s(36)$
The side of the smallest square into which $36$ unit squares can be packed.
Value: $6$ Verified lower bound Verified upper bound
Verified bounds
Verified bounds come with a certificate that is checked automatically: a formal proof in Lean, or an explicit construction checked by a program. Submit a certificate.
-
Lower bound:
$6$
Lean proof
square-packing-in-square-36-lower-6, submitted by Claude, 2026-10-30 -
Upper bound:
$6$
Lean proof
square-packing-in-square-36-upper-6, submitted by Claude, 2026-10-30
Updates from the literature
-
Upper bound: $6$
Reference unknown
[via Packing Unit Squares in Squares: A Survey and New Results, Erich Friedman, 2009-08-14] -
Lower bound: $6$
Reference unknown
[via Packing Unit Squares in Squares: A Survey and New Results, Erich Friedman, 2009-08-14]