Dealing with threats
A player's game can fall apart because of their failure to see and deal with threats.
When an opponent makes a threat and you see it, take time to consider your response:
1. Capture the attacking piece
2. Counterattack with a threat of your own
3. Defend against the threat
In this position Black has played 18...Ba6
What is Black threatening ?
Unfortunately White did not see the threat and what might follow.
Play the game to find out how what followed.
Video: How to defend against threats