PokerSolver
PokerSolver/6-max · 40bb · 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) · 40bb · CO limps, BTN isolates to 2.5bb, SB calls · Big blind to act

6-max · 40bb · 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 83.9%Call 4.1%Raise 5/7.5bb 12%
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 40bb?

CO limps, BTN isolates to 2.5bb, SB calls in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the big blind (BB) folds 83.9%, calls 4.1% and raises 5/7.5bb 12%. Always raise 5/7.5bb: 88+, AKs, AJs, KJs+, AQo+. Mixed: 44-77, 22, AQs, A5s-ATs, A2s, K5s-KTs, K3s, Q6s+, J7s-J9s, T7s+, 96s+, 93s-94s, 86s, 74s+, 64s, 52s, ATo-AJo, KTo+, J9o+.

Always fold
33, A3s-A4s, K4s, K2s, Q2s-Q5s, JTs, J2s-J6s, T2s-T6s, 95s, 92s, 87s, 82s-85s, 72s-73s, 65s, 62s-63s, 53s+, 42s+, 32s, A2o-A9o, K2o-K9o, Q2o+, J2o-J8o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
No hand plays this every time
Always raise 5/7.5bb
88+, AKs, AJs, KJs+, AQo+
Mixed
44-77, 22, AQs, A5s-ATs, A2s, K5s-KTs, K3s, Q6s+, J7s-J9s, T7s+, 96s+, 93s-94s, 86s, 74s+, 64s, 52s, ATo-AJo, KTo+, J9o+
Settings: 6-max · 40bb · 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, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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.