PokerSolver
PokerSolver/6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB all-in

BB vs SB all-in

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · SB opens 2.5bb, BB 3-bets to 5bb, SB goes all-in · Big blind to act

6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 255.8bbYour cards?
5bb
249.84bb

Tap your two cards.

Big blind's range

898 of 1,326 combos get here
Fold 96.2%Call 3.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 2.5bb, BB 3-bets to 5bb, SB goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

SB opens 2.5bb, BB 3-bets to 5bb, SB goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 96.2% and calls 3.9%. Always call: KK+, AKs, AKo. Mixed: TT-QQ.

Always fold
44-99, 22, A5s-AQs, A2s-A3s, K8s+, K3s-K6s, Q8s+, Q3s-Q6s, J8s+, J2s-J6s, T5s+, T3s, 97s+, 93s-95s, 85s+, 83s, 74s+, 64s+, 53s+, A3o-AQo, KQo, K9o-KTo, K4o-K6o, K2o, QJo, Q8o-Q9o, Q4o-Q5o, J4o+, T5o-T8o, 96o-97o, 76o, 64o, 54o
Always call
KK+, AKs, AKo
Mixed
TT-QQ
Settings: 6-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 29.27). 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.