PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs HJ 4-bet 20.7bb

BB vs HJ 4-bet 20.7bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · HJ opens 3bb, BB 3-bets to 9bb, HJ 4-bets to 20.7bb · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 31bbYour cards?
9bb
20.7bb
0.5bb

Tap your two cards.

Big blind's range

448 of 1,326 combos get here
Fold 77.2%Call 6.7%All-in 79.84bb 16.1%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when HJ opens 3bb, BB 3-bets to 9bb, HJ 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

HJ opens 3bb, BB 3-bets to 9bb, HJ 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 77.2%, calls 6.7% and goes all-in 79.84bb 16.1%. Always call: AQs. Always all-in 79.84bb: QQ+, 99-TT, 44, AKs, AKo. Mixed: JJ, 66-88, A4s-A5s, KJs+, QTs, JTs, T9s, 98s, 87s, 76s.

Always fold
A6s-A9s, A2s-A3s, K2s-K9s, QJs, Q3s-Q9s, J7s-J9s, T6s-T8s, 96s-97s, 86s, 74s, 64s, 53s, 43s, AQo, A8o-A9o, A4o-A5o, KTo+, QTo+, JTo, T9o
Always call
AQs
Always all-in 79.84bb
QQ+, 99-TT, 44, AKs, AKo
Mixed
JJ, 66-88, A4s-A5s, KJs+, QTs, JTs, T9s, 98s, 87s, 76s
Settings: 5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Rake sources for the games it fits: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.