PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BB all-in

SB vs BB all-in

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB goes all-in · Small blind to act

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 84.48bbYour cards?
4bb
79.84bb

Tap your two cards.

Small blind's range

794 of 1,326 combos get here
Fold 84.7%Call 15.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the small blind (SB) folds 84.7% and calls 15.3%. Always call: 88+, AQs+, ATs, AKo. Mixed: 66-77, AJs, A7s, A5s, A3s, K9s+, Q8s, J8s, AJo-AQo, A3o.

Always fold
44-55, A6s, A4s, A2s, K6s-K7s, K2s-K4s, QJs, Q9s, Q6s-Q7s, Q3s-Q4s, J3s-J7s, T6s-T8s, T3s, 95s, 92s-93s, 86s+, 83s-84s, 73s+, 63s+, 54s, 52s, A6o-ATo, A4o, A2o, KTo+, K7o, Q4o+, J9o+, J7o, J5o, T8o+, T6o, 98o, 87o
Always call
88+, AQs+, ATs, AKo
Mixed
66-77, AJs, A7s, A5s, A3s, K9s+, Q8s, J8s, AJo-AQo, A3o
Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.