PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB iso raise 3bb

BB vs SB iso raise 3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · BTN limps, SB isolates to 3bb · Big blind to act

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.64bbYour cards?
1bb
1bb
3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 74.2%Call 16.4%Raise 6/9bb 9.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN limps, SB isolates to 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

BTN limps, SB isolates to 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 74.2%, calls 16.4% and raises 6/9bb 9.4%. Always call: 22-99, A6s-ATs, A3s, KQs, K8s-K9s, QJs, Q9s, 97s. Always raise 6/9bb: JJ+, AQs+, AKo. Mixed: TT, AJs, A4s-A5s, A2s, KTs-KJs, K2s-K7s, QTs, Q8s, Q5s-Q6s, J5s+, T6s+, 98s, 96s, 85s+, 76s, 63s+, 52s+, A9o-AQo, A5o, KTo+, QJo, JTo.

Always fold
Q7s, Q2s-Q4s, J2s-J4s, T2s-T5s, 92s-95s, 82s-84s, 72s-75s, 62s, 42s+, 32s, A6o-A8o, A2o-A4o, K2o-K9o, Q2o-QTo, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
22-99, A6s-ATs, A3s, KQs, K8s-K9s, QJs, Q9s, 97s
Always raise 6/9bb
JJ+, AQs+, AKo
Mixed
TT, AJs, A4s-A5s, A2s, KTs-KJs, K2s-K7s, QTs, Q8s, Q5s-Q6s, J5s+, T6s+, 98s, 96s, 85s+, 76s, 63s+, 52s+, A9o-AQo, A5o, KTo+, QJo, JTo
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.