Chess 101: 14. What is mate in one?

 Chess 101:

1. Board and squares

2. How pieces move?

3. How to set up the board?

4. What are values of pieces?

5. How to capture a piece?

6. How to attack?

7. How to defend?

8. What is an exchange?

9. How to start a game?

10. How to finish a game?

11. What is check?

12. What is checkmate or mate?

13. What is draw?

14. What is mate in one?

https://youtu.be/O_Nt5TeRtTU