Rookie rank
Get familiar with the grid first.
Levels cleared
0+ – 2
Grid
3×3
Color difference
ΔE 7.0–10.0
How to climb
- Scan row by row instead of staring at the whole grid at once.
- The first levels use large, obvious differences — trust your first instinct.
The next step: Apprentice
Clear 3 levels in one run to reach Apprentice. The color difference keeps shrinking — warming up — keep going.