PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO 4-bet 9.2bb

SB vs CO 4-bet 9.2bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2bb, SB 3-bets to 4bb, CO 4-bets to 9.2bb · Small blind to act

5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differHJCOBTNSBBB

Pot 15bbYour cards?

4bb

1bb

9.2bb

Tap your two cards.

Small blind's range

312 of 1,326 combos get here

Fold 43.4%Call 43.8%All-in 79.84bb 12.8%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when CO opens 2bb, SB 3-bets to 4bb, CO 4-bets to 9.2bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 2bb, SB 3-bets to 4bb, CO 4-bets to 9.2bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the small blind (SB) folds 43.4%, calls 43.8% and goes all-in 79.84bb 12.8%. Always call: TT-JJ, 44-88, ATs, KJs, 65s. Always all-in 79.84bb: AKo. Mixed: QQ+, 99, AKs, AJs, A7s-A9s, A3s-A4s, KQs, KTs, QTs+, J9s+, T9s, 86s, AQo.

Always fold: ATo-AJo, KJo+, JTo
Always call: TT-JJ, 44-88, ATs, KJs, 65s
Always all-in 79.84bb: AKo
Mixed: QQ+, 99, AKs, AJs, A7s-A9s, A3s-A4s, KQs, KTs, QTs+, J9s+, T9s, 86s, AQo

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.