PokerSolver
PokerSolver/6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB iso raise 2.5bb

BB vs SB iso raise 2.5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · BTN limps, SB isolates to 2.5bb · Big blind to act

6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.46bbYour cards?
1bb
1bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 62.4%Call 26.3%Raise 5/7.5bb 11.3%
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 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

BTN limps, SB isolates to 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 62.4%, calls 26.3% and raises 5/7.5bb 11.3%. Always call: 22-99, A9s-ATs, A6s-A7s, A3s, K3s-KTs, Q8s-QTs, Q6s, J7s, T8s, T6s, 96s+, 85s-86s, 75s, 64s, 53s, A9o-ATo, KQo, JTo. Always raise 5/7.5bb: JJ+, AQs+, AKo. Mixed: TT, AJs, A8s, A4s-A5s, A2s, KJs+, K2s, QJs, Q7s, Q2s-Q5s, J8s+, J2s-J6s, T9s, T7s, 87s, 76s, 74s, 65s, 63s, 54s, 52s, 43s, AJo-AQo, A3o-A8o, K9o-KJo, QTo+, J9o, T9o, 98o, 76o, 65o.

Always fold
T2s-T5s, 92s-95s, 82s-84s, 72s-73s, 62s, 42s, 32s, A2o, K2o-K8o, Q2o-Q9o, J2o-J8o, T2o-T8o, 92o-97o, 82o+, 72o-75o, 62o-64o, 52o+, 42o+, 32o
Always call
22-99, A9s-ATs, A6s-A7s, A3s, K3s-KTs, Q8s-QTs, Q6s, J7s, T8s, T6s, 96s+, 85s-86s, 75s, 64s, 53s, A9o-ATo, KQo, JTo
Always raise 5/7.5bb
JJ+, AQs+, AKo
Mixed
TT, AJs, A8s, A4s-A5s, A2s, KJs+, K2s, QJs, Q7s, Q2s-Q5s, J8s+, J2s-J6s, T9s, T7s, 87s, 76s, 74s, 65s, 63s, 54s, 52s, 43s, AJo-AQo, A3o-A8o, K9o-KJo, QTo+, J9o, T9o, 98o, 76o, 65o
Settings: 6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.92). 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.