PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs CO 4-bet 13.8bb

SB vs CO 4-bet 13.8bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO opens 2bb, SB 3-bets to 6bb, CO 4-bets to 13.8bb · Small blind to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 21.44bbYour cards?
6bb
1bb
13.8bb

Tap your two cards.

Small blind's range

322 of 1,326 combos get here
Fold 52.2%Call 36.7%Raise 30.36bb 7.1%All-in 249.84bb 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 opens 2bb, SB 3-bets to 6bb, CO 4-bets to 13.8bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

CO opens 2bb, SB 3-bets to 6bb, CO 4-bets to 13.8bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the small blind (SB) folds 52.2%, calls 36.7%, raises 30.36bb 7.1% and goes all-in 249.84bb 4%. Always call: JJ, 44-66, 22, 65s. Mixed: QQ+, 77-TT, A9s+, A2s-A7s, KTs+, QTs+, J9s+, T8s+, 97s+, 75s+, AKo.

Always fold
A8s, K9s, K4s, Q8s, Q6s, AQo, QJo, JTo
Always call
JJ, 44-66, 22, 65s
Always raise 30.36bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
QQ+, 77-TT, A9s+, A2s-A7s, KTs+, QTs+, J9s+, T8s+, 97s+, 75s+, AKo
Settings: 4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.