What This COLL Subset Does
Sune COLL is a subset of COLL that applies when you recognize a Sune OLL pattern (three corners oriented correctly, one corner needs orientation). Instead of doing standard OLL + PLL, Sune COLL solves both corner orientation and permutation in one algorithm, leaving only edge permutation (EPLL) to finish.
When to Use: After F2L, if you see a Sune pattern on the last layer AND all corners are already oriented correctly, you can use Sune COLL instead of standard OLL + PLL.
Recognition Logic
Step 1: Identify Sune Pattern
Look for the classic Sune pattern: three corners showing the top color, one corner not showing the top color. This is the same recognition as Sune OLL.
Step 2: Verify Corner Orientation
Check that all four corners are already oriented correctly (showing the correct color on top). If corners need orientation, use standard OLL instead.
Step 3: Identify Corner Permutation
Determine how the corners need to be swapped. Sune COLL has multiple cases depending on which corners need to be permuted.
Example Algorithms
Note: These are examples. Full Sune COLL subset contains multiple cases based on corner permutation.
Case 1 (Adjacent Swap):
R U R' U R U2 R'
This solves Sune COLL when two adjacent corners need to swap positions.
Remember: After executing COLL, you'll need to recognize and execute one of four EPLL algorithms to finish the solve.
Why This Subset Is Useful
- High Frequency: Sune patterns appear in approximately 15-20% of solves
- Easy Recognition: Sune is one of the most recognizable OLL patterns
- Time Savings: Can save 1-2 seconds compared to OLL + PLL
- Learning Foundation: Understanding Sune COLL helps you grasp the concept of combining orientation and permutation
Common Mistakes
- Using COLL when corners aren't oriented: COLL only works when all corners are already correctly oriented. If not, use standard OLL first.
- Wrong case recognition: Make sure you're identifying the correct corner permutation case within the Sune subset
- Forgetting EPLL: After COLL, you still need to solve edge permutation. Don't forget this final step.
- Rushing recognition: Take time to verify corner orientation before committing to COLL
⚠️ Important Note
This is a subset. Full COLL has 42 cases.
Sune COLL is just one subset of the complete COLL method. The full Sune COLL subset contains multiple cases based on different corner permutation scenarios. Learn these cases gradually as you become comfortable with the recognition and execution.