Here are the key BWF badminton rules in brief:
Game Basics
- Best of 3 games
- 21 points per game
- 2-point advantage (e.g., 21-19, not 21-20)
Serving
- Serve diagonally
- Server stands behind service line
- Receiver stands anywhere
Scoring
- Point scored by winner of rally
- Let: replay point (e.g., shuttle hits net)
Faults
- Shuttle lands outside court
- Player hits shuttle out of bounds
- Player obstructs opponent
Other Key Rules
- Players switch sides after each game
- 60-second break between games
- 120-second break between matches
These are the core rules. If you need more details or specific clarifications, feel free to ask!