PokerSolver
PokerSolver/5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO all-in

SB vs CO all-in

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO limps, SB isolates to 3bb, CO 3-bets to 9bb, SB 4-bets to 20.7bb, CO goes all-in · Small blind to act

5-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 122.34bbYour cards?
20.7bb
1bb
99.84bb

Tap your two cards.

Small blind's range

276 of 1,326 combos get here
Fold 81.3%Call 18.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when CO limps, SB isolates to 3bb, CO 3-bets to 9bb, SB 4-bets to 20.7bb, CO goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 100bb?

CO limps, SB isolates to 3bb, CO 3-bets to 9bb, SB 4-bets to 20.7bb, CO goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the small blind (SB) folds 81.3% and calls 18.7%. Always call: QQ+, AKs, AKo. Mixed: 66-JJ, AJs, A8s, KQs.

Always fold
55, AQs, A9s-ATs, A7s, A3s-A5s, K9s-KJs, K5s-K7s, QJs, Q9s, J9s+, T8s, 97s, 86s, 64s+, 54s, ATo-AQo, KJo+
Always call
QQ+, AKs, AKo
Mixed
66-JJ, AJs, A8s, KQs
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.