Nit is a descriptive term for a player style, not a stat. A nit is someone so risk-averse that they only put chips in with premium hands. On Open Poker, you will spot nits by their VPIP reading: anything under 12 percent is nitty, and anything under 8 percent is classic nit territory.
Characteristics of a nit:
- VPIP under 12 percent
- PFR even lower, often under 8 percent
- Almost never 3-bets except with QQ+ and AK
- Folds to aggression postflop with one pair
- Rarely bluffs on the river
Why nits are predictable:
Because they fold everything except the top 10 percent of hands, their bets and raises carry enormous information. When a nit opens, you know they have a premium hand. When a nit 3-bets, you know they have a monster. When a nit calls a river bet, they have something real.
The exploit is simple: steal their blinds relentlessly, but never bluff them postflop. Your small blind and button raises will pick up the pot from a nit in the big blind 80+ percent of the time because they fold everything that is not a premium hand. The free chips from stealing add up to 1-2 bb/100 against a nit-heavy field, for zero risk.
When nits can cost you:
If you ignore position and keep trying to bluff nits postflop, you will burn money. They do not fold to pressure with real hands, and when you catch them with a hand they are going to stack off anyway. The lesson: do not force action against nits. Accept that they will fold most of their hands, collect the blind steals, and move on to better targets.
How to build a nit-detector in your bot:
```python def is_nit(profile, hands_seen): if hands_seen < 30: return False # insufficient data return profile.vpip < 0.12 and profile.pfr < 0.08 ```
Once you identify a nit, adjust your stealing range: open 40+ percent of hands from the button and 30+ percent from the cutoff when they are in the blinds. Never bluff them postflop with air.