PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN 4-bet 13.8bb

BB vs BTN 4-bet 13.8bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · 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
4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 20.94bbYour cards?
6bb
13.8bb
0.5bb

Tap your two cards.

Big blind's range

674 of 1,326 combos get here
Fold 70.4%Call 23.3%All-in 149.84bb 6.3%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

BTN opens 2bb, BB 3-bets to 6bb, BTN 4-bets to 13.8bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 70.4%, calls 23.3% and goes all-in 149.84bb 6.3%. Always call: 88-QQ, 55-66, 22-33, AJs-AQs, KJs+, T8s, 87s, 65s, AQo. Always all-in 149.84bb: KK, AKo. Mixed: AA, 77, 44, AKs, A2s-ATs, KTs, K7s-K8s, K5s, QTs+, Q8s, J9s+, T9s, T7s, 97s, 86s, 74s+, 64s.

Always fold
K9s, K6s, K2s-K4s, Q9s, Q4s-Q7s, J3s-J8s, T5s-T6s, T2s, 98s, 94s-96s, 92s, 84s-85s, 73s, 62s-63s, 52s+, 42s+, 32s, ATo, A5o, A2o, KTo+, K7o, QTo+, JTo, T8o, 97o, 87o, 65o, 54o
Always call
88-QQ, 55-66, 22-33, AJs-AQs, KJs+, T8s, 87s, 65s, AQo
Always all-in 149.84bb
KK, AKo
Mixed
AA, 77, 44, AKs, A2s-ATs, KTs, K7s-K8s, K5s, QTs+, Q8s, J9s+, T9s, T7s, 97s, 86s, 74s+, 64s
Settings: 4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.