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 opens 2bb, BB 3-bets to 6bb, CO goes all-in · Big blind to act

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 86.98bbYour cards?
6bb
79.84bb
0.5bb

Tap your two cards.

Big blind's range

610 of 1,326 combos get here
Fold 86.1%Call 13.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO opens 2bb, BB 3-bets to 6bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

CO opens 2bb, BB 3-bets to 6bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 86.1% and calls 13.9%. Always call: QQ+, TT, AKo. Mixed: JJ, 66-99, A8s+, A3s, KJs, K9s, K7s, QJs, Q9s, Q5s-Q6s, Q3s, JTs, T8s, 62s, ATo-AQo, QJo.

Always fold
A4s-A7s, A2s, KQs, KTs, K8s, K2s-K6s, QTs, Q8s, Q2s, J6s-J9s, J4s, J2s, T9s, T3s-T6s, 95s+, 85s+, 82s, 74s+, 64s+, 53s+, 43s, A7o, A4o-A5o, KTo+, K7o, JTo, T9o, 98o, 87o, 65o, 54o
Always call
QQ+, TT, AKo
Mixed
JJ, 66-99, A8s+, A3s, KJs, K9s, K7s, QJs, Q9s, Q5s-Q6s, Q3s, JTs, T8s, 62s, ATo-AQo, QJo
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.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: 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.