PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BB 4-bet 20.7bb

SB vs BB 4-bet 20.7bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb · 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
4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 30.34bbYour cards?
9bb
20.7bb

Tap your two cards.

Small blind's range

590 of 1,326 combos get here
Fold 63.2%Call 23.8%Raise 45.54bb 12.6%All-in 199.84bb 0.5%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the small blind (SB) folds 63.2%, calls 23.8%, raises 45.54bb 12.6% and goes all-in 199.84bb 0.5%. Always call: 99, 22-66, A9s-AQs, KJs+, Q9s+, J9s+, T9s, 76s, 65s. Always raise 45.54bb: KK+, AKs, A6s. Mixed: TT-QQ, 77-88, A7s-A8s, A2s-A5s, K8s-KTs, K6s, T8s, 97s+, 87s, 75s, 54s, AQo+.

Always fold
K7s, K2s-K5s, Q6s-Q8s, Q2s-Q4s, J6s-J8s, J3s-J4s, T7s, 96s, 85s-86s, 53s, ATo-AJo, A7o-A8o, A3o-A5o, K8o+, QJo, J9o+, T9o
Always call
99, 22-66, A9s-AQs, KJs+, Q9s+, J9s+, T9s, 76s, 65s
Always raise 45.54bb
KK+, AKs, A6s
Always all-in 199.84bb
No hand plays this every time
Mixed
TT-QQ, 77-88, A7s-A8s, A2s-A5s, K8s-KTs, K6s, T8s, 97s+, 87s, 75s, 54s, AQo+
Settings: 4-max · 200bb · 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, 200bb stacks, 5% rake capped at 4.8bb; 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.

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.