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) · 100bb · SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, 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
4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 121.18bbYour cards?
20.7bb
99.84bb
Tap your two cards.
Big blind's range
592 of 1,326 combos get hereFold 88.5%Call 11.5%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the big blind (BB) when SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?
SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 88.5% and calls 11.5%. Always call: 99+, AQs+, AKo. Mixed: 88.
- Always fold
- A7s-A8s, A5s, A3s, K2s-K8s, Q4s-Q9s, J5s-J7s, T7s, T4s, 98s, 96s, 85s-86s, 76s, 74s, 63s-64s, 52s+, 43s, 32s, A2o-AQo, K8o+, QTo+, JTo, T9o, 98o
- Always call
- 99+, AQs+, AKo
- Mixed
- 88
Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.