BB vs SB all-in
Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · SB opens 2bb, BB 3-bets to 4bb, SB goes all-in · Big blind to act
Fits exactlyno game we have checked
CloseCP1 games
- CPCoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 104.16bbYour cards?
4bb
99.84bb
Tap your two cards.
Big blind's range
638 of 1,326 combos get hereFold 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 SB opens 2bb, BB 3-bets to 4bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 100bb?
SB opens 2bb, BB 3-bets to 4bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 100bb: the big blind (BB) folds 81.8% and calls 18.2%. Always call: 99+, AJs-AQs, AJo+. Mixed: 55-88, A8s-ATs, A3s, KQs, QJs, ATo, KQo.
- Always fold
- 22-44, A5s-A7s, KJs, K7s-K9s, K5s, Q7s-QTs, Q3s, J7s+, J3s-J4s, T5s+, 95s+, 92s-93s, 85s+, 83s, 74s+, 72s, 65s, 53s+, 42s+, A8o-A9o, KTo, QTo+, JTo, T9o, 98o, 75o, 65o, 54o
- Always call
- 99+, AJs-AQs, AJo+
- Mixed
- 55-88, A8s-ATs, A3s, KQs, QJs, ATo, KQo
Settings: Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 100bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 8.9). 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.