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

BB vs SB call

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · CO opens 2.5bb, SB calls · 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
Tournament
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 6.8bbYour cards?
1bb
2.5bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 58.9%Call 29%Raise 5/7.5bb 12.1%
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, SB calls in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO opens 2.5bb, SB calls in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 58.9%, calls 29% and raises 5/7.5bb 12.1%. Always call: 77, 22-55, A8s, A6s, K8s, K2s-K3s, Q8s, Q2s-Q6s, J6s, T6s, 97s, 85s, 74s-75s, 63s-64s, 52s-53s, 43s, AJo, A9o, K9o-KJo, QTo+, 87o, 76o, 65o, 54o. Always raise 5/7.5bb: 99+, ATs+, KTs+, QTs+, AQo+. Mixed: 88, 66, A9s, A7s, A2s-A5s, K9s, K4s-K7s, Q9s, Q7s, J7s+, J3s-J5s, T7s+, T5s, 98s, 95s-96s, 86s+, 84s, 76s, 73s, 65s, 54s, 42s, 32s, ATo, A8o, KQo, J9o+, 98o, 86o, 75o.

Always fold
J2s, T2s-T4s, 92s-94s, 82s-83s, 72s, 62s, A2o-A7o, K2o-K8o, Q2o-Q9o, J2o-J8o, T2o+, 92o-97o, 82o-85o, 72o-74o, 62o-64o, 52o-53o, 42o+, 32o
Always call
77, 22-55, A8s, A6s, K8s, K2s-K3s, Q8s, Q2s-Q6s, J6s, T6s, 97s, 85s, 74s-75s, 63s-64s, 52s-53s, 43s, AJo, A9o, K9o-KJo, QTo+, 87o, 76o, 65o, 54o
Always raise 5/7.5bb
99+, ATs+, KTs+, QTs+, AQo+
Mixed
88, 66, A9s, A7s, A2s-A5s, K9s, K4s-K7s, Q9s, Q7s, J7s+, J3s-J5s, T7s+, T5s, 98s, 95s-96s, 86s+, 84s, 76s, 73s, 65s, 54s, 42s, 32s, ATo, A8o, KQo, J9o+, 98o, 86o, 75o
Settings: 5-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 24.95). 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.