SB vs BB all-in
Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in · Small blind / button 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 120.86bbYour cards?
20.7bb
99.84bb
Tap your two cards.
Small blind / button's range
582 of 1,326 combos get hereFold 85.2%Call 14.8%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the small blind / button (SB) when SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 100bb?
SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 100bb: the small blind / button (SB) folds 85.2% and calls 14.8%. Always call: 66+, AQs+, AQo+.
- Always fold
- K4s, K2s, Q5s-Q6s, Q2s, J4s-J6s, J2s, T3s-T6s, 84s, 73s-74s, 62s-63s, 52s, 42s, A3o-AJo, K8o+, K5o-K6o, Q8o+, J8o+, T8o+, 98o, 87o, 76o
- Always call
- 66+, AQs+, AQo+
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.