ZBLL Pi

ZBLL Pi: no corner oriented; the top colour shows as a pair on one side and once on each side next to it.

What it is

ZBLL solves the whole last layer in one algorithm once its edges are oriented, as they always are after ZZ's EOLine or a ZBLS/VHLS last slot. There are 493 cases: 472 in seven subsets named after the corner-orientation shape (T, U, L, H, Pi, S, AS), plus the 21 PLLs.
Each subset is 72 cases (H is 40): the corner shape fixes the subset; within it, cases split by the corner permutation (the COLL case) and then by the edges. Most solvers learn ZBLL subset by subset, often starting with T and U, which are the most common and the most regular.

Recognition

Identify the corner shape first (it names the subset), then the COLL case from the corner stickers, then the edges: look for blocks and headlights on the sides, and where the edge matching a headlight pair sits.
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Pi 1

ZBLL Pi 1
y' R U R' U R U2 R2 F' r U R U' r' F
14 HTM · 0.21% · 4 algs
ZBLL Pi 2
y' r' F' r U' r' F2 r2 U R' U' r' F R F'
14 HTM · 0.21% · 4 algs
ZBLL Pi 3
(U2) F R U' R' U R U R2 F' R U2 R U' R' U R U2 R' U'
19 HTM · 0.21% · 4 algs
ZBLL Pi 4
(U2) y2 R U R D R' U' R D' R U' R U' R' U2 R
15 HTM · 0.21% · 4 algs
ZBLL Pi 5
F R' F' R U2 R U2 R' U' r U R' U R U2 r'
16 HTM · 0.21% · 4 algs
ZBLL Pi 6
F R U R' U' R' F' R U2 R' U' R2 U' R2 U2 R
16 HTM · 0.21% · 4 algs
ZBLL Pi 7
R2 F R U R U' R' F' R U' R' U' R U R' U R
17 HTM · 0.21% · 4 algs
ZBLL Pi 8
(U) y F U R U' R' U R U2 R' U' R U R' F'
14 HTM · 0.21% · 4 algs
ZBLL Pi 9
(U') y' R U R' U R U' R' U' R' F' R U2 R U2 R' F
16 HTM · 0.21% · 4 algs
ZBLL Pi 10
(U') y' F U' R U' R' U R U R' U2 R U2 R' U F'
15 HTM · 0.21% · 4 algs
ZBLL Pi 11
(U) y' R F U R2 U2 R2 U R2 U R2 F' R'
12 HTM · 0.21% · 4 algs
ZBLL Pi 12
R' U' F' R U R' U' R' F R2 U2 R' U2 R
14 HTM · 0.21% · 3 algs

Pi 2

ZBLL Pi 13
(U) y R2 D' R U2 R' D R2 U R2 D' R U R' D R2
15 HTM · 0.21% · 4 algs
ZBLL Pi 14
(U') y' R2 D R' U2 R D' R2 U' R2 D R' U' R D' R2
15 HTM · 0.21% · 4 algs
ZBLL Pi 15
R' U' R U' R2 D' R U R' D R2 U' R' U2 R
15 HTM · 0.21% · 3 algs
ZBLL Pi 16
R U R' U R2 D R' U' R D' R2 U R U2 R'
15 HTM · 0.21% · 3 algs
ZBLL Pi 17
R' U' R U R2 F' R U R U' R' F U' R U R' U R
18 HTM · 0.21% · 4 algs
ZBLL Pi 18
(U) y R U2 R' U' R U2 R' U2 R U' R2 D' R U' R' D R
17 HTM · 0.21% · 4 algs
ZBLL Pi 19
(U') y' F U R U2 R' U R U R' F' R U2 R' U' R U' R'
17 HTM · 0.21% · 4 algs
ZBLL Pi 20
(U2) y2 R U2 R' U' R U' R' U' F U R U2 R' U R U R' F'
18 HTM · 0.21% · 4 algs
ZBLL Pi 21
(U2) y2 L' U R U' L U' R' U' R U' R'
11 HTM · 0.21% · 4 algs
ZBLL Pi 22
r' U r U r' U' r U R2 F R F' R
13 HTM · 0.21% · 4 algs
ZBLL Pi 23
r U' r' U' r U r' U' R2 B' R' B R' U
14 HTM · 0.21% · 4 algs
ZBLL Pi 24
y' R U R' U F' R U2 R' U2 R' F R
12 HTM · 0.21% · 4 algs

Pi 3

ZBLL Pi 25
R' U' R' D' R U' R' D R2 U R' U' R U R' U R
17 HTM · 0.21% · 4 algs
ZBLL Pi 26
R U' R' U' R U' R' U R U R' U R' F' R U R U' R' F
20 HTM · 0.21% · 4 algs
ZBLL Pi 27
(U) y R U R' U R U' R' U R2 D R' U' R D' R' U' R'
17 HTM · 0.21% · 4 algs
ZBLL Pi 28
(U2) y2 R' U2 R U R' U' R U R2 F R U R U' R' F' R
17 HTM · 0.21% · 4 algs
ZBLL Pi 29
(U) R U' L' U R' U' L U' R U' L' U R' U' L
15 HTM · 0.21% · 4 algs
ZBLL Pi 30
(U) y F U R U' R' U R U' R2 F' R U R U' R'
15 HTM · 0.21% · 4 algs
ZBLL Pi 31
(U2) F U R U' R2 F' R2 U R' F' U' F U2 R U' R'
16 HTM · 0.21% · 4 algs
ZBLL Pi 32
(U') y' R U R' U R U' R2 F R F' R U' R' F' U F
16 HTM · 0.21% · 4 algs
ZBLL Pi 33
(U) y R' U' R U' B2 R' U2 R U2 l U2 l'
12 HTM · 0.21% · 4 algs
ZBLL Pi 34
(U') y' R' U' R U' R' U R U' R' U R' D' R U R' D R2
17 HTM · 0.21% · 3 algs
ZBLL Pi 35
(U) y2 R2 D R' U R D' R' U R' U' R U R' U' R U' R'
17 HTM · 0.21% · 4 algs
ZBLL Pi 36
R' U' R U' R' U2 R U' L' U R U' L U R'
15 HTM · 0.21% · 3 algs

Pi 4

ZBLL Pi 37
R' F R U R' U' R' F' R2 U' R' U R U' R' U2 R
17 HTM · 0.21% · 4 algs
ZBLL Pi 38
R U R D R' U R D' R2 U' R U R' U' R U' R'
17 HTM · 0.21% · 3 algs
ZBLL Pi 39
R U2 R2 U' R2 U' R' U2 R' F R U R' U' R' F' R2
17 HTM · 0.21% · 4 algs
ZBLL Pi 40
(U') y' R' U' R U' R' U R U' R2 D' R U R' D R U R
17 HTM · 0.21% · 4 algs
ZBLL Pi 41
R U R' U' R' F R2 U R' U' R U R' U' F'
15 HTM · 0.21% · 2 algs
ZBLL Pi 42
(U2) y2 R U2 R' U2 R' F R2 U' R' U2 R U2 R' U' F'
15 HTM · 0.21% · 4 algs
ZBLL Pi 43
(U') y R U2 R' U' R U R' U' R' D' R U' R' D R2 U' R' U R U' R'
21 HTM · 0.21% · 4 algs
ZBLL Pi 44
r' F' r U r U2 r' F2 U' R U R' U' R U' R'
16 HTM · 0.21% · 4 algs
ZBLL Pi 45
R U R' U R U2 R' U' R U' L' U R' U' L
15 HTM · 0.21% · 4 algs
ZBLL Pi 46
(U2) y' R' U2 R U R' U R2 U' r' F R' F' r
13 HTM · 0.21% · 4 algs
ZBLL Pi 47
(U) y R U R' U R U' R' U R U' R D R' U' R D' R2
17 HTM · 0.21% · 4 algs
ZBLL Pi 48
(U') y' R U R' U F2 R U2 R' U2 R' F2 R
12 HTM · 0.21% · 4 algs

Pi 5

ZBLL Pi 49
y R U2 R' U2 R' U' F U R2 U' R' U R U' R' F'
16 HTM · 0.21% · 4 algs
ZBLL Pi 50
(U') y' R U R' F' R U R' U R U2 R' F U R U2 R'
16 HTM · 0.21% · 4 algs
ZBLL Pi 51
(U2) y2 R F U' R2 U2 R U R' U R2 U F' R'
13 HTM · 0.21% · 4 algs
ZBLL Pi 52
(U) y R U R' U' R U R2 D' R U' R' D R U' R U2 R'
17 HTM · 0.21% · 4 algs
ZBLL Pi 53
F U R' U' R2 U' R2 U2 R U2 R U R' F'
14 HTM · 0.21% · 4 algs
ZBLL Pi 54
(U) y R' U' R' D' R U R' D R U2 R' D' R U2 R' D R2
17 HTM · 0.21% · 4 algs
ZBLL Pi 55
R2 D R' U' R D' R' U' R' U R U' R' U' R U' R'
17 HTM · 0.21% · 4 algs
ZBLL Pi 56
R2 D' R U R' D R U R U' R' U R U R' U R
17 HTM · 0.21% · 4 algs
ZBLL Pi 57
(U2) y2 R U2 R' U R' D' R U R' D R2 U' R' U R U' R'
17 HTM · 0.21% · 4 algs
ZBLL Pi 58
R2 D R' U2 R D' R2 U' R U R D R' U2 R D' R2
17 HTM · 0.21% · 4 algs
ZBLL Pi 59
(U') y' r U R' U R' F R F' R U' R' U R U2 r'
15 HTM · 0.21% · 4 algs
ZBLL Pi 60
(U) y R U2 R' U' F' R U2 R' U' R U' R' F R U' R'
16 HTM · 0.21% · 4 algs

Pi 6

ZBLL Pi 61
R U2 R2 U' R2 U' R2 U2 R
9 HTM · 0.21% · 3 algs
ZBLL Pi 62
(U) y' R' U2 R U R' U R2 U R' U R U2 R'
13 HTM · 0.21% · 4 algs
ZBLL Pi 63
(U') y' R U2 R' U2 R U' R' U2 R U' R' U2 R U R'
15 HTM · 0.21% · 4 algs
ZBLL Pi 64
(U) y R' U2 R U2 R' U R U2 R' U R U2 R' U' R
15 HTM · 0.21% · 4 algs
ZBLL Pi 65
(U2) y2 R' U R U' R2 U2 R U R' U R2 U' R' U R
15 HTM · 0.21% · 4 algs
ZBLL Pi 66
(U2) y2 R U' R' U R2 U2 R' U' R U' R2 U R U' R'
15 HTM · 0.21% · 4 algs
ZBLL Pi 67
(U) y R U2 R' U' R U' R2 U' R U' R' U2 R
13 HTM · 0.21% · 4 algs
ZBLL Pi 68
R' U2 R2 U R2 U R2 U2 R'
9 HTM · 0.21% · 3 algs
ZBLL Pi 69
R U R' U R U2 R' U' R U R' U R U2 R'
15 HTM · 0.21% · 4 algs
ZBLL Pi 70
R' U' R U' R' U2 R U R' U' R U' R' U2 R
15 HTM · 0.21% · 4 algs
ZBLL Pi 71
(U) y R U R' U R U2 R' U R U R' U R U2 R'
15 HTM · 0.21% · 4 algs
ZBLL Pi 72
F R U R' U' R U R' U' F' R U R' U' M' U R U' r'
20 HTM · 0.21% · 4 algs
Source: SpeedCubeDB, https://speedcubedb.com/a/3x3/ZBLLPi, 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.