PokerSolver
PokerSolver/5-max · 100bb · 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) · 100bb · 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 · 100bb · 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

374 of 1,326 combos get here
Fold 68.8%Call 16.3%All-in 99.84bb 14.9%
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 100bb?

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, 100bb: the big blind (BB) folds 68.8%, calls 16.3% and goes all-in 99.84bb 14.9%. Always call: 66-77, AQs. Always all-in 99.84bb: KK+, 99-JJ, AKs, AKo. Mixed: QQ, 88, A9s, A7s, A3s-A5s, KTs+, T9s, 98s, 87s, 76s, 65s.

Always fold
A6s, A2s, K2s-K9s, Q4s+, J7s+, T7s-T8s, 96s-97s, 75s, 64s, 54s, 43s, A9o, A5o, KTo+, QJo, JTo
Always call
66-77, AQs
Always all-in 99.84bb
KK+, 99-JJ, AKs, AKo
Mixed
QQ, 88, A9s, A7s, A3s-A5s, KTs+, T9s, 98s, 87s, 76s, 65s
Settings: 5-max · 100bb · 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, 100bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 23.9). 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.