PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 3-bet 9bb

SB vs CO 3-bet 9bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO limps, SB isolates to 3bb, CO 3-bets to 9bb · Small blind to act

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 13.8bbYour cards?
3bb
1bb
9bb

Tap your two cards.

Small blind's range

336 of 1,326 combos get here
Fold 69.4%Call 4.5%Raise 20.7bb 22.8%All-in 79.84bb 3.3%
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 in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO limps, SB isolates to 3bb, CO 3-bets to 9bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the small blind (SB) folds 69.4%, calls 4.5%, raises 20.7bb 22.8% and goes all-in 79.84bb 3.3%. Always raise 20.7bb: AA, AKs. Mixed: 55-KK, A8s-AQs, A3s-A6s, KJs+, K9s, K7s, K5s, QTs+, J9s, 87s, 76s, AQo+, KQo.

Always fold
A7s, A2s, KTs, K8s, Q8s-Q9s, JTs, T8s+, 96s+, 86s, 65s, 53s+, ATo-AJo, KJo, QJo, JTo
Always call
No hand plays this every time
Always raise 20.7bb
AA, AKs
Always all-in 79.84bb
No hand plays this every time
Mixed
55-KK, A8s-AQs, A3s-A6s, KJs+, K9s, K7s, K5s, QTs+, J9s, 87s, 76s, AQo+, KQo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.