Each row and column must contain exactly the shown count of each color.
This row satisfies R:1 G:2 B:2
before
→ filled →
✓ satisfied
Two tiles of the same color cannot touch up, down, left or right.
Every cell must be filled. All puzzles are solvable by logic alone — no guessing needed. Good luck!
A complete valid row — R:2 G:1 B:2