PokerSolver
PokerSolver/4-max · 200bb · 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) · 200bb · 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 · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 221.68bbYour cards?
20.7bb
199.84bb
0.5bb

Tap your two cards.

Big blind's range

438 of 1,326 combos get here
Fold 81.8%Call 18.2%
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 200bb?

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, 200bb: the big blind (BB) folds 81.8% and calls 18.2%. Always call: KK+, AKs, AKo. Mixed: TT-QQ, 88, 44-55, ATs-AQs, A8s, A6s, A3s-A4s, KTs+, QJs, Q6s, J9s, J5s, T9s, T7s, 98s, KQo.

Always fold
99, 77, A7s, A5s, A2s, K9s, K4s-K7s, K2s, QTs, Q8s, JTs, J8s, J2s, T5s, 95s-97s, 87s, 85s, 75s, 54s, 43s, AQo, ATo, KTo, QTo, JTo
Always call
KK+, AKs, AKo
Mixed
TT-QQ, 88, 44-55, ATs-AQs, A8s, A6s, A3s-A4s, KTs+, QJs, Q6s, J9s, J5s, T9s, T7s, 98s, KQo
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.