PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs CO all-in

BB vs CO all-in

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO limps, BB isolates to 2bb, CO 3-bets to 4bb, BB 4-bets to 9.2bb, CO 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 · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 90.18bbYour cards?
9.2bb
79.84bb
0.5bb

Tap your two cards.

Big blind's range

272 of 1,326 combos get here
Fold 80.5%Call 19.5%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BB isolates to 2bb, CO 3-bets to 4bb, BB 4-bets to 9.2bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

CO limps, BB isolates to 2bb, CO 3-bets to 4bb, BB 4-bets to 9.2bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 80.5% and calls 19.5%. Always call: JJ+. Mixed: 88-99, 55, AJs+, KJs+, QJs, AKo.

Always fold
66, 44, A9s, A5s-A7s, A2s, K7s, Q9s-QTs, J9s+, T8s, 87s, 54s, A9o-ATo, KTo
Always call
JJ+
Mixed
88-99, 55, AJs+, KJs+, QJs, AKo
Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; 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.