PokerSolver
PokerSolver/6-max · 20bb · 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) · 20bb · CO opens 2bb · Big blind to act

6-max · 20bb · 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 32.3%Call 52%Raise 4/6bb 15.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO opens 2bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

CO opens 2bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 32.3%, calls 52% and raises 4/6bb 15.6%. Always call: 22-44, A9s, A7s, A2s-A5s, K2s-KJs, Q2s+, J2s-J9s, T2s+, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A9o, A3o-A5o, K9o-KJo, K6o-K7o, K3o-K4o, Q7o+, J8o+, T8o+, 97o+, 86o+, 76o, 65o, 54o. Always raise 4/6bb: 55+, ATs+, KQs, ATo+, KQo. Mixed: A8s, A6s, JTs, A6o-A8o, A2o, K8o, K5o, K2o, Q5o-Q6o, J7o, T7o, 64o.

Always fold
Q2o-Q4o, J2o-J6o, T2o-T6o, 92o-96o, 82o-85o, 72o-75o, 62o-63o, 52o-53o, 42o+, 32o
Always call
22-44, A9s, A7s, A2s-A5s, K2s-KJs, Q2s+, J2s-J9s, T2s+, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A9o, A3o-A5o, K9o-KJo, K6o-K7o, K3o-K4o, Q7o+, J8o+, T8o+, 97o+, 86o+, 76o, 65o, 54o
Always raise 4/6bb
55+, ATs+, KQs, ATo+, KQo
Mixed
A8s, A6s, JTs, A6o-A8o, A2o, K8o, K5o, K2o, Q5o-Q6o, J7o, T7o, 64o
Settings: 6-max · 20bb · 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, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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.