PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO open 2bb

BB vs CO open 2bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · CO opens 2bb · Big blind to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 4.46bbYour cards?
1bb
2bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 31%Call 54.3%Raise 4/6bb 14.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO opens 2bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

CO opens 2bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the big blind (BB) folds 31%, calls 54.3% and raises 4/6bb 14.7%. Always call: 22-55, A7s-A9s, A4s-A5s, A2s, K2s-K7s, Q2s-Q7s, J2s-J7s, T8s, T2s-T6s, 97s, 92s-95s, 86s+, 82s-84s, 72s-75s, 62s+, 52s-53s, 42s+, 32s, A9o, A6o-A7o, A2o-A4o, K6o-K9o, K4o, Q6o-QTo, J8o-J9o, T7o, 97o+, 86o+, 75o+, 65o, 54o. Always raise 4/6bb: 88+, AJs+, KQs, AJo+, KQo. Mixed: 66-77, ATs, A6s, A3s, K8s-KJs, Q8s+, J8s+, T9s, T7s, 98s, 96s, 85s, 76s, 54s, ATo, A8o, A5o, KTo-KJo, K5o, K2o-K3o, QJo, Q4o-Q5o, Q2o, JTo, J7o, T8o+, 64o, 53o.

Always fold
Q3o, J2o-J6o, T2o-T6o, 92o-96o, 82o-85o, 72o-74o, 62o-63o, 52o, 42o+, 32o
Always call
22-55, A7s-A9s, A4s-A5s, A2s, K2s-K7s, Q2s-Q7s, J2s-J7s, T8s, T2s-T6s, 97s, 92s-95s, 86s+, 82s-84s, 72s-75s, 62s+, 52s-53s, 42s+, 32s, A9o, A6o-A7o, A2o-A4o, K6o-K9o, K4o, Q6o-QTo, J8o-J9o, T7o, 97o+, 86o+, 75o+, 65o, 54o
Always raise 4/6bb
88+, AJs+, KQs, AJo+, KQo
Mixed
66-77, ATs, A6s, A3s, K8s-KJs, Q8s+, J8s+, T9s, T7s, 98s, 96s, 85s, 76s, 54s, ATo, A8o, A5o, KTo-KJo, K5o, K2o-K3o, QJo, Q4o-Q5o, Q2o, JTo, J7o, T8o+, 64o, 53o
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.