PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN 4-bet 13.8bb

BB vs BTN 4-bet 13.8bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · BTN opens 2bb, BB 3-bets to 6bb, BTN 4-bets to 13.8bb · 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
Tournament
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 21.1bbYour cards?
6bb
13.8bb
0.5bb

Tap your two cards.

Big blind's range

750 of 1,326 combos get here
Fold 79.6%Call 8.3%All-in 79.84bb 12.1%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 2bb, BB 3-bets to 6bb, BTN 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

BTN opens 2bb, BB 3-bets to 6bb, BTN 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 79.6%, calls 8.3% and goes all-in 79.84bb 12.1%. Always call: AJs. Always all-in 79.84bb: QQ-KK, AKs, AKo. Mixed: AA, 44-JJ, AQs, A7s-ATs, A2s-A5s, K9s+, K5s-K6s, QJs, Q9s, Q7s, J8s+, T8s, 98s, 76s, 65s, 54s, AJo-AQo, KQo.

Always fold
A6s, K7s-K8s, K2s-K3s, QTs, Q8s, Q2s-Q6s, J4s-J7s, T9s, T5s-T7s, T2s-T3s, 93s-97s, 84s+, 72s-75s, 62s-64s, 53s, 42s+, A9o-ATo, A5o-A7o, A2o, KJo, Q9o+, J9o+, J7o, T8o+, 97o, 87o, 76o, 65o, 54o
Always call
AJs
Always all-in 79.84bb
QQ-KK, AKs, AKo
Mixed
AA, 44-JJ, AQs, A7s-ATs, A2s-A5s, K9s+, K5s-K6s, QJs, Q9s, Q7s, J8s+, T8s, 98s, 76s, 65s, 54s, AJo-AQo, KQo
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.