7th PC Patterns

Let's assume that you are attempting consecutive 4-height PCs. Each 4-height PC requires 10 pieces and each bag has 7 pieces. Therefore you have a potential to complete a full loop on your 7th PC because 70 pieces (10 pieces × 7 PCs) are divisible by 7, a full bag. This makes the 7th PC unique—the 7th PC being on the end of the loop means that it can be thought of 3 residual pieces + 7 pieces from the 10th bag.

This page lists some 100% patterns that you could use for your 7th PC. However, it is by no means comprehensive, i.e., it will not cover every possible 3 piece combination. If interested, a good supplementary page to look at could be knewjade's Best Chance Field.

Patterns

Every pattern shown here has a 100% chance of PC.

1

OST: 1 solution

2

ITZ: 1 solution

3

IST: 2 solutions

4

IJT
JLT
JST: 4 solutions

5

JLO
JLS
JJO
JJZ: 8 solutions

6

JLO: 3 solutions

7

IOT: 2 solutions

8

JOT
JTZ: 5 solutions

9

IOS: 5 solutions

10

STZ
ZZT: 3 solutions

11

LOZ
TTO
ILZ
IJO: 5 solutions

12

JOZ
IJZ
IJS
OOJ: 5 solutions

13

IIT
JJT
OOT: 3 solutions

14

JJS
IJL
TTJ: 5 solutions

15

IIO
JJO: 9 solutions

16

IIL
JJL
OOL
IJO: 10 solutions

See Also / References

Nilgiri's tweet on ITZ