Square-1 edge orientation
Gather each layer's edges: 7 cases.
1-1
1,0 / 3,0 / 3,0 / -1,-1 / -2,1 / -3,0 / -1,0
15 HTM · 1 alg
I-I
1,0 / -1,-1 / 0,1
6 HTM · 2 algs
L-L
1,0 / -4,-1 / 1,1 / 3,0 / -1,0
11 HTM · 1 alg
L-I
1,0 / 3,0 / 3,0 / -1,-1 / -2,1 / -4,-1 / 0,1
16 HTM · 1 alg
3-3
((3,0)) 1,0 / 3,0 / 3,0 / -1,-1 / -3,0 / -3,0 / 0,1
14 HTM · 2 algs
4-4
1,0 / -1,-1 / -2,4 / -1,-1 / 1,0
12 HTM · 2 algs
I-L
1,0 / -3,0 / 3,0 / -1,-1 / -3,0 / 3,0 / 0,1
14 HTM · 1 alg
Source: SpeedCubeDB, https://speedcubedb.com/a/SQ1/SQ1EO, retrieved 2026-10-24: case names, groups, setups and images, and the top-voted algorithms per case with their votes. Every algorithm shown was checked by the logic engine; rejected ones are listed in docs/db-exclusions.md.