PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 3-bet 5bb

SB vs CO 3-bet 5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb · Small blind to act

5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 9.3bbYour cards?
2.5bb
1bb
5bb

Tap your two cards.

Small blind's range

406 of 1,326 combos get here
Fold 23.7%Call 67.9%Raise 11.5bb 4.1%All-in 249.84bb 4.3%
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 2.5bb, CO 3-bets to 5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO limps, SB isolates to 2.5bb, CO 3-bets to 5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 23.7%, calls 67.9%, raises 11.5bb 4.1% and goes all-in 249.84bb 4.3%. Always call: 66-QQ, 44, AJs-AQs, A9s, K7s+, K5s, QTs, 97s, 87s, 85s, 75s, 64s, AJo-AQo, KQo. Mixed: KK+, 55, AKs, ATs, A3s-A8s, K6s, QJs, Q8s-Q9s, J8s+, T7s+, 98s, 86s, 76s, 65s, 54s, AKo, ATo, QTo+, JTo.

Always fold
No hand plays this every time
Always call
66-QQ, 44, AJs-AQs, A9s, K7s+, K5s, QTs, 97s, 87s, 85s, 75s, 64s, AJo-AQo, KQo
Always raise 11.5bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
KK+, 55, AKs, ATs, A3s-A8s, K6s, QJs, Q8s-Q9s, J8s+, T7s+, 98s, 86s, 76s, 65s, 54s, AKo, ATo, QTo+, JTo
Settings: 5-max · 250bb · 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, 250bb stacks, 5% rake capped at 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.