PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN all-in

BB vs BTN all-in

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · BTN limps, BB isolates to 3bb, BTN 3-bets to 9bb, BB 4-bets to 20.7bb, BTN goes all-in · Big 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 · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 121.68bbYour cards?

20.7bb

99.84bb

0.5bb

Tap your two cards.

Big blind's range

406 of 1,326 combos get here

Fold 78.8%Call 21.2%

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

What is the GTO play for the big blind (BB) when BTN limps, BB isolates to 3bb, BTN 3-bets to 9bb, BB 4-bets to 20.7bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

BTN limps, BB isolates to 3bb, BTN 3-bets to 9bb, BB 4-bets to 20.7bb, BTN goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 78.8% and calls 21.2%. Always call: JJ+, AKs, K8s, AKo. Mixed: 99-TT, 77, 22-55, AJs-AQs, A8s, A6s, KTs, K7s, QJs, Q4s, 97s, 87s, 74s.

Always fold: 88, 66, A9s-ATs, A7s, A3s-A5s, KJs+, K9s, K3s-K6s, Q9s-QTs, Q6s-Q7s, J7s+, J4s, T8s, T3s, 98s, 85s, 76s, 63s+, 43s, AQo, ATo, KJo+, QJo
Always call: JJ+, AKs, K8s, AKo
Mixed: 99-TT, 77, 22-55, AJs-AQs, A8s, A6s, KTs, K7s, QJs, Q4s, 97s, 87s, 74s

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.