The following pictures show n squares with the largest possible sum of sides packed inside a unit equilateral triangle.
1.
2.
3.
Σ s = 2√3–3 = .46410+
Trivial.
Σ s = 18–10√3 = .67949+
Found by Erich Friedman
in June 2026.
Σ s = (63–31√3)/10 = .93064+
Found by Jonathan Viquerat
in June 2026.
4.
5.
6.
Σ s = 1.07948+
Found by Jonathan Viquerat
in June 2026.
Σ s = 1.22888+
Found by Jonathan Viquerat
in June 2026.
Σ s = (327–171√3)/22 = 1.40087+
Found by Jonathan Viquerat
in June 2026.
7.
8.
9.
Σ s = 1.51535+
Found by Jonathan Viquerat
in June 2026.
Σ s = 1.63240+
Found by Jonathan Viquerat
in June 2026.
Σ s = 1.75582+
Found by Jonathan Viquerat
in September 2026.
10.
11.
12.
Σ s = 1.86607+
Found by Haowei Lin
in July 2026.
Σ s = 1.96484+
Found by Jonathan Viquerat
in June 2026.
Σ s = 2.05916+
Found by Jonathan Viquerat
in June 2026.
13.
14.
15.
Σ s = 2.15473+
Found by Haowei Lin
in July 2026.
Σ s = 2.24353+
Found by Jonathan Viquerat
in September 2026.
Σ s = 2.33280+
Found by Haowei Lin
in July 2026.
16.
17.
18.
Σ s = 2.41865+
Found by Jonathan Viquerat
in June 2026.
Σ s = 2.49817+
Found by Haowei Lin
in July 2026.
Σ s = 2.57855+
Found by Haowei Lin
in July 2026.
19.
20.
21.
Σ s = 2.65121+
Found by Haowei Lin
in July 2026.
Σ s = 2.72533+
Found by Haowei Lin
in July 2026.
Σ s = 2.80200+
Found by Haowei Lin
in July 2026.
22.
23.
24.
Σ s = 2.86771+
Found by Jonathan Viquerat
in September 2026.
Σ s = 2.93551+
Found by Jonathan Viquerat
in September 2026.
Σ s = 3.07428+
Found by Jonathan Viquerat
in October 2026.
25.
26.
27.
Σ s = 3.07428+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.12931+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.19309+
Found by Jonathan Viquerat
in October 2026.
28.
29.
30.
Σ s = 3.25567+
Found by Joost de Winter
in September 2026.
Σ s = 3.31762+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.37768+
Found by Joost de Winter
in September 2026.
31.
32.
33.
Σ s = 3.43660+
Found by Joost de Winter
in September 2026.
Σ s = 3.49696+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.55280+
Found by Jonathan Viquerat
in October 2026.
34.
35.
36.
Σ s = 3.61080+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.66504+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.72651+
Found by Jonathan Viquerat
in October 2026.
37.
38.
39.
Σ s = 3.77661+
Found by Jonathan Viquerat
in October 2026.
Σ s = 3.83564+
Found by Joost de Winter
in October 2026.
Σ s = 3.89690+
Found by Joost de Winter
in October 2026.
40.
41.
42.
Σ s = 3.94514+
Found by Joost de Winter
in September 2026.
Σ s = 3.97961+
Found by Joost de Winter
in October 2026.
Σ s = 4.03088+
Found by Joost de Winter
in September 2026.
43.
44.
45.
Σ s = 4.09447+
Found by Joost de Winter
in September 2026.
Σ s = 4.13207+
Found by Joost de Winter
in October 2026.
Σ s = 4.15485+
Found by Joost de Winter
in October 2026.
46.
47.
48.
Σ s = 4.21523+
Found by Joost de Winter
in September 2026.
Σ s = 4.25283+
Found by Joost de Winter
in October 2026.
Σ s = 4.27661+
Found by Joost de Winter
in October 2026.
49.
50.
Σ s = 4.33069+
Found by Joost de Winter
in September 2026.
Σ s = 4.36829+
Found by Joost de Winter
in October 2026.