PokerSolver
PokerSolver/Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/BB vs SB all-in

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 limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb, SB goes all-in · Big blind to act

Heads-up · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 113.96bbYour cards?
13.8bb
99.84bb

Tap your two cards.

Big blind's range

750 of 1,326 combos get here
Fold 85.1%Call 14.9%
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 6bb, BB 4-bets to 13.8bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 100bb?

SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb, SB goes all-in in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 100bb: the big blind (BB) folds 85.1% and calls 14.9%. Always call: TT+, AQs+, AKo. Mixed: 55-99, AJs, A8s, KTs+, K5s, QTs+, Q7s-Q8s, Q3s, JTs, J6s-J7s, T7s, 86s, AQo, ATo.

Always fold
33, A9s-ATs, A2s-A7s, K7s-K9s, K2s-K4s, Q9s, Q4s-Q6s, Q2s, J8s-J9s, J2s-J5s, T8s+, T2s-T6s, 93s+, 87s, 84s-85s, 73s+, 63s+, 54s, 52s, 42s+, 32s, AJo, A5o-A9o, K8o+, Q9o+, J8o+, T8o+, 98o, 87o, 76o, 65o
Always call
TT+, AQs+, AKo
Mixed
55-99, AJs, A8s, KTs+, K5s, QTs+, Q7s-Q8s, Q3s, JTs, J6s-J7s, T7s, 86s, AQo, ATo
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.

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.