PokerSolver
PokerSolver/4-max · 100bb · 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) · 100bb · CO opens 2bb, SB 3-bets to 6bb, CO 4-bets to 13.8bb · Small blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
Tournament
4-max · 100bb · 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

340 of 1,326 combos get here
Fold 58.5%Call 25.9%All-in 99.84bb 15.6%
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 100bb?

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, 100bb: the small blind (SB) folds 58.5%, calls 25.9% and goes all-in 99.84bb 15.6%. Always call: 88, 44, AQs. Always all-in 99.84bb: AA, AKs, AKo. Mixed: 99-KK, 55-77, A5s-AJs, A2s-A3s, KJs+, Q8s-QTs, T9s, 97s+, 86s+, 76s, 65s, 54s, AQo.

Always fold
A4s, K8s-KTs, K6s, K4s, QJs, Q7s, J9s+, T7s-T8s, ATo-AJo, KTo+, QTo
Always call
88, 44, AQs
Always all-in 99.84bb
AA, AKs, AKo
Mixed
99-KK, 55-77, A5s-AJs, A2s-A3s, KJs+, Q8s-QTs, T9s, 97s+, 86s+, 76s, 65s, 54s, AQo
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.

Rake sources for the games it fits: 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.