PokerSolver
PokerSolver/4-max · 100bb · 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) · 100bb · 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 · 100bb · 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

738 of 1,326 combos get here
Fold 75.4%Call 14.3%All-in 99.84bb 10.3%
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 100bb?

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, 100bb: the big blind (BB) folds 75.4%, calls 14.3% and goes all-in 99.84bb 10.3%. Always call: AJs. Always all-in 99.84bb: KK, AKs, AKo. Mixed: AA, 44-QQ, AQs, A2s-ATs, KTs+, K7s-K8s, Q7s+, J8s+, T8s+, 97s+, 74s-75s, 65s, 42s+, AJo-AQo.

Always fold
K9s, K6s, K4s, Q3s-Q5s, J2s-J7s, T3s-T7s, 95s-96s, 93s, 85s+, 83s, 76s, 72s-73s, 64s, 52s+, 32s, ATo, A5o, KJo+, K9o, QTo+, J7o+, T9o, 86o, 65o, 54o
Always call
AJs
Always all-in 99.84bb
KK, AKs, AKo
Mixed
AA, 44-QQ, AQs, A2s-ATs, KTs+, K7s-K8s, Q7s+, J8s+, T8s+, 97s+, 74s-75s, 65s, 42s+, AJo-AQo
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.