PokerSolver
PokerSolver/5-max · 100bb · 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) · 100bb · CO limps, SB isolates to 3bb, CO 3-bets to 9bb · Small blind to act

5-max · 100bb · 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 68.6%Call 8.5%Raise 20.7bb 17.7%All-in 99.84bb 5.2%
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 100bb?

CO limps, SB isolates to 3bb, CO 3-bets to 9bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 100bb: the small blind (SB) folds 68.6%, calls 8.5%, raises 20.7bb 17.7% and goes all-in 99.84bb 5.2%. Always raise 20.7bb: AA. Mixed: 55-KK, A7s+, A3s-A5s, K9s+, K5s-K7s, QJs, T8s, 97s, 86s+, 76s, 64s+, 54s, AQo+, KJo+.

Always fold
A6s, K8s, Q9s-QTs, J8s+, T9s, T7s, 98s, ATo-AJo, QJo
Always call
No hand plays this every time
Always raise 20.7bb
AA
Always all-in 99.84bb
No hand plays this every time
Mixed
55-KK, A7s+, A3s-A5s, K9s+, K5s-K7s, QJs, T8s, 97s, 86s+, 76s, 64s+, 54s, 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.