BB vs SB all-in
4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (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
4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 255.48bbYour cards?
5bb
249.84bb
Tap your two cards.
Big blind's range
806 of 1,326 combos get hereFold 95%Call 5%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?
SB opens 2.5bb, BB 3-bets to 5bb, SB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 95% and calls 5%. Always call: QQ+, AKs, AKo. Mixed: TT-JJ.
- Always fold
- 22-99, A2s-AQs, K3s+, Q9s+, Q5s-Q7s, Q2s-Q3s, J7s+, J5s, J3s, T6s+, T2s-T3s, 95s+, 93s, 85s+, 73s-75s, 64s+, 53s+, 42s+, A7o-AQo, K8o+, K4o-K5o, Q9o+, Q5o, JTo, J8o, J5o, T7o-T8o, 98o, 96o, 86o, 76o, 65o, 53o
- Always call
- QQ+, AKs, AKo
- Mixed
- TT-JJ
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.