SB 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, SB 3-bets to 4bb, CO goes all-in · Small blind to act
4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 85.48bbYour cards?
4bb
1bb
79.84bb
Tap your two cards.
Small blind's range
324 of 1,326 combos get hereFold 82%Call 17.9%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the small blind (SB) when CO opens 2bb, SB 3-bets to 4bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?
CO opens 2bb, SB 3-bets to 4bb, CO goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the small blind (SB) folds 82% and calls 17.9%. Always call: QQ+, TT, AKs, AKo. Mixed: JJ, 77-99, 55, AJs, AQo.
- Always fold
- 66, 33-44, A8s-ATs, A4s-A6s, A2s, KTs+, K6s, QTs+, JTs, J8s, T8s+, 97s, 87s, 76s, 65s, AJo, KJo, QTo+, JTo
- Always call
- QQ+, TT, AKs, AKo
- Mixed
- JJ, 77-99, 55, AJs, AQo
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.