PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN 4-bet 13.8bb

BB vs BTN 4-bet 13.8bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · 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
6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 21.26bbYour cards?
6bb
13.8bb
0.5bb

Tap your two cards.

Big blind's range

838 of 1,326 combos get here
Fold 80.3%Call 3.9%All-in 39.84bb 15.8%
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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

BTN opens 2bb, BB 3-bets to 6bb, BTN 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the big blind (BB) folds 80.3%, calls 3.9% and goes all-in 39.84bb 15.8%. Always call: A9s. Always all-in 39.84bb: JJ+, 99, AJs+, AJo+. Mixed: TT, 55-88, ATs, A8s, A5s-A6s, A2s-A3s, K6s+, K2s-K3s, QTs+, Q8s, Q4s, JTs, J6s, T9s, 95s, A9o-ATo, KJo+.

Always fold
A4s, K4s-K5s, J7s-J9s, J5s, T7s-T8s, T4s, T2s, 96s+, 93s-94s, 84s+, 73s+, 63s+, A2o-A8o, K7o-KTo, K4o, Q8o+, Q6o, Q4o, J9o+, J7o, T7o+, 96o+, 76o, 65o, 54o
Always call
A9s
Always all-in 39.84bb
JJ+, 99, AJs+, AJo+
Mixed
TT, 55-88, ATs, A8s, A5s-A6s, A2s-A3s, K6s+, K2s-K3s, QTs+, Q8s, Q4s, JTs, J6s, T9s, 95s, A9o-ATo, KJo+
Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.