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

SB 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, SB 3-bets to 6bb, BTN 4-bets to 13.8bb · Small blind to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 21.76bbYour cards?
6bb
1bb
13.8bb

Tap your two cards.

Small blind's range

522 of 1,326 combos get here
Fold 69.6%Call 7.4%All-in 39.84bb 23%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN opens 2bb, SB 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, SB 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 small blind (SB) folds 69.6%, calls 7.4% and goes all-in 39.84bb 23%. Always all-in 39.84bb: TT+, AJs+, AQo+. Mixed: 44-99, A7s-ATs, A2s-A5s, K5s+, K2s, Q9s+, Q6s, Q4s, J7s-J8s, T9s, 75s+, 65s, A8o-AJo.

Always fold
A6s, K3s-K4s, Q5s, Q2s, J9s+, J6s, J4s, T6s-T8s, T4s, 97s+, 85s+, A2o-A7o, K9o+, QTo+, JTo
Always call
No hand plays this every time
Always all-in 39.84bb
TT+, AJs+, AQo+
Mixed
44-99, A7s-ATs, A2s-A5s, K5s+, K2s, Q9s+, Q6s, Q4s, J7s-J8s, T9s, 75s+, 65s, A8o-AJo
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.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: 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.