The slowplay is playing a very strong hand passively —checking or just calling— to hide it and squeeze out more chips later. It's tempting, but used badly it gives away pots.
When you SHOULD slowplay
- •When your hand is so strong that almost nothing your opponent has can catch you (a dry board with your set on top).
- •When betting would scare off your opponent and you'd rather let them bluff or hit something to pay you off.
When NOT to
On wet boards (with flush or straight draws), betting is better: slowplaying gives free cards, and your opponent completes their draw and beats you. Most of the time, betting your strong hand is the right play.