PokerSolver
PokerSolver/6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 3-bet 4bb

SB vs CO 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO limps, SB isolates to 2bb, CO 3-bets to 4bb · Small blind to act

6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.96bbYour cards?
2bb
1bb
4bb

Tap your two cards.

Small blind's range

480 of 1,326 combos get here
Fold 18.7%Call 72.9%Raise 9.2bb 4%All-in 199.84bb 4.4%
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 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 200bb?

CO limps, SB isolates to 2bb, CO 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 200bb: the small blind (SB) folds 18.7%, calls 72.9%, raises 9.2bb 4% and goes all-in 199.84bb 4.4%. Always call: 99-QQ, 44-77, AQs, A6s-A9s, K9s+, K6s, J9s+, 96s+, 75s, 53s, AJo-AQo, A9o, KTo, QTo+. Mixed: KK+, 88, AKs, ATs-AJs, A3s-A5s, K8s, K4s-K5s, K2s, Q7s+, Q4s, J7s, T7s+, 85s+, 76s, 64s+, 54s, AKo, ATo, A4o, KJo+, JTo, T9o, 54o.

Always fold
T8o, 98o
Always call
99-QQ, 44-77, AQs, A6s-A9s, K9s+, K6s, J9s+, 96s+, 75s, 53s, AJo-AQo, A9o, KTo, QTo+
Always raise 9.2bb
No hand plays this every time
Always all-in 199.84bb
No hand plays this every time
Mixed
KK+, 88, AKs, ATs-AJs, A3s-A5s, K8s, K4s-K5s, K2s, Q7s+, Q4s, J7s, T7s+, 85s+, 76s, 64s+, 54s, AKo, ATo, A4o, KJo+, JTo, T9o, 54o
Settings: 6-max · 200bb · 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, 200bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 28.67). 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.