PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs SB 4-bet 20.7bb

BTN vs SB 4-bet 20.7bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN limps, SB isolates to 3bb, BTN 3-bets to 9bb, SB 4-bets to 20.7bb · Button 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
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 31.5bbYour cards?
9bb
20.7bb
1bb

Tap your two cards.

Button's range

324 of 1,326 combos get here
Fold 26.5%Call 60.7%Raise 45.54bb 12.8%All-in 249.84bb 0%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when BTN limps, SB isolates to 3bb, BTN 3-bets to 9bb, SB 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN limps, SB isolates to 3bb, BTN 3-bets to 9bb, SB 4-bets to 20.7bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the button (BTN) folds 26.5%, calls 60.7% and raises 45.54bb 12.8%. Always call: JJ-QQ, 99, 66-77, 33, A6s, A3s, K8s-K9s, K5s, J7s, 96s, 85s, 43s. Always raise 45.54bb: AA. Mixed: KK, K7s, K4s, K2s, Q7s, T6s, AQo+, A9o, A5o, QJo, T9o.

Always fold
KTo
Always call
JJ-QQ, 99, 66-77, 33, A6s, A3s, K8s-K9s, K5s, J7s, 96s, 85s, 43s
Always raise 45.54bb
AA
Mixed
KK, K7s, K4s, K2s, Q7s, T6s, AQo+, A9o, A5o, QJo, T9o
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.

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.