PokerSolver
PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO open 2.5bb

BB vs CO open 2.5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · CO opens 2.5bb · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 4.96bbYour cards?
1bb
2.5bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 48.5%Call 35.4%Raise 5/7.5bb 16%
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 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

CO opens 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 48.5%, calls 35.4% and raises 5/7.5bb 16%. Always call: K9s-KJs, K2s-K7s, QTs, Q2s-Q8s, J2s-J8s, T4s-T7s, 95s+, 84s+, 73s+, 63s+, 52s+, 42s+, 32s, A9o, A5o, K7o-KJo, Q9o+, J9o+, T9o, 65o. Always raise 5/7.5bb: 55+, ATs+, A7s-A8s, A2s, KQs, JTs, ATo+. Mixed: 22-44, A9s, A3s-A6s, K8s, QJs, Q9s, J9s, T8s+, T2s-T3s, 62s, A6o-A8o, A2o-A4o, KQo, K6o, Q8o, J8o, T8o, 98o, 87o, 76o.

Always fold
92s-94s, 82s-83s, 72s, K2o-K5o, Q2o-Q7o, J2o-J7o, T2o-T7o, 92o-97o, 82o-86o, 72o-75o, 62o-64o, 52o+, 42o+, 32o
Always call
K9s-KJs, K2s-K7s, QTs, Q2s-Q8s, J2s-J8s, T4s-T7s, 95s+, 84s+, 73s+, 63s+, 52s+, 42s+, 32s, A9o, A5o, K7o-KJo, Q9o+, J9o+, T9o, 65o
Always raise 5/7.5bb
55+, ATs+, A7s-A8s, A2s, KQs, JTs, ATo+
Mixed
22-44, A9s, A3s-A6s, K8s, QJs, Q9s, J9s, T8s+, T2s-T3s, 62s, A6o-A8o, A2o-A4o, KQo, K6o, Q8o, J8o, T8o, 98o, 87o, 76o
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.

Rake sources for the games it fits: 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.