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

BB vs SB call

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

6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.96bbYour cards?
1bb
1bb
2.5bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 76.8%Call 12.7%Raise 5/7.5bb 10.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BTN isolates to 2.5bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO limps, BTN isolates to 2.5bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 76.8%, calls 12.7% and raises 5/7.5bb 10.6%. Always call: 99, 55, 22-33, J9s, AJo. Always raise 5/7.5bb: TT+, AQs+, A4s, AKo. Mixed: 66-88, 44, A5s-AJs, A2s-A3s, K3s+, Q8s+, JTs, J5s-J8s, T6s+, 97s+, 86s+, 74s+, 64s+, 52s+, AQo, ATo, KJo+, QTo+, JTo, T9o, 76o, 65o.

Always fold
K2s, Q2s-Q7s, J2s-J4s, T2s-T5s, 92s-96s, 82s-85s, 72s-73s, 62s-63s, 42s+, 32s, A2o-A9o, K2o-KTo, Q2o-Q9o, J2o-J9o, T2o-T8o, 92o+, 82o+, 72o-75o, 62o-64o, 52o+, 42o+, 32o
Always call
99, 55, 22-33, J9s, AJo
Always raise 5/7.5bb
TT+, AQs+, A4s, AKo
Mixed
66-88, 44, A5s-AJs, A2s-A3s, K3s+, Q8s+, JTs, J5s-J8s, T6s+, 97s+, 86s+, 74s+, 64s+, 52s+, AQo, ATo, KJo+, QTo+, JTo, T9o, 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.