PokerSolver
PokerSolver/5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN 4-bet 13.8bb

SB 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) · 100bb · BTN opens 2bb, SB 3-bets to 6bb, BTN 4-bets to 13.8bb · Small blind to act

5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 21.6bbYour cards?
6bb
1bb
13.8bb

Tap your two cards.

Small blind's range

464 of 1,326 combos get here
Fold 62.9%Call 22.2%All-in 99.84bb 15%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

BTN opens 2bb, SB 3-bets to 6bb, BTN 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the small blind (SB) folds 62.9%, calls 22.2% and goes all-in 99.84bb 15%. Always call: 88, 22, AQs. Always all-in 99.84bb: QQ-KK, AKs, A3s, AKo. Mixed: AA, 99-JJ, 55-77, A8s-AJs, A4s-A6s, K9s+, K6s-K7s, K4s, Q9s+, J9s+, 97s+, 87s, 76s, 65s, AJo-AQo, KJo+.

Always fold
A7s, K8s, K5s, K2s-K3s, Q6s-Q8s, J7s-J8s, J3s, T7s+, 95s, 86s, 74s, 54s, A9o-ATo, KTo, QTo+, JTo, T9o
Always call
88, 22, AQs
Always all-in 99.84bb
QQ-KK, AKs, A3s, AKo
Mixed
AA, 99-JJ, 55-77, A8s-AJs, A4s-A6s, K9s+, K6s-K7s, K4s, Q9s+, J9s+, 97s+, 87s, 76s, 65s, AJo-AQo, KJo+
Settings: 5-max · 100bb · 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, 100bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 23.9). 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.