PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB call

BB vs SB call

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · 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
4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 6.64bbYour cards?
1bb
2.5bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 60.2%Call 28.9%Raise 5/7.5bb 10.9%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO opens 2.5bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 60.2%, calls 28.9% and raises 5/7.5bb 10.9%. Always call: 22, A7s, A3s, K7s, K2s-K5s, Q4s-Q7s, T6s-T8s, 96s, 84s-85s, 74s, 63s-64s, 53s+, A9o-AJo, KTo, QTo+, JTo, 87o, 76o, 65o. Always raise 5/7.5bb: TT+, ATs+, A8s, KJs+, AKo. Mixed: 33-99, A9s, A4s-A6s, A2s, K8s-KTs, K6s, Q8s+, Q3s, J5s+, J3s, T9s, T3s, 97s+, 86s+, 75s+, 73s, 65s, 52s, 42s+, AQo, KJo+, K9o, T8o+, 98o, 86o, 75o, 54o.

Always fold
Q2s, J4s, J2s, T4s-T5s, T2s, 92s-95s, 82s-83s, 72s, 62s, 32s, A2o-A8o, K2o-K8o, Q2o-Q9o, J2o-J9o, T2o-T7o, 92o-97o, 82o-85o, 72o-74o, 62o-64o, 52o-53o, 42o+, 32o
Always call
22, A7s, A3s, K7s, K2s-K5s, Q4s-Q7s, T6s-T8s, 96s, 84s-85s, 74s, 63s-64s, 53s+, A9o-AJo, KTo, QTo+, JTo, 87o, 76o, 65o
Always raise 5/7.5bb
TT+, ATs+, A8s, KJs+, AKo
Mixed
33-99, A9s, A4s-A6s, A2s, K8s-KTs, K6s, Q8s+, Q3s, J5s+, J3s, T9s, T3s, 97s+, 86s+, 75s+, 73s, 65s, 52s, 42s+, AQo, KJo+, K9o, T8o+, 98o, 86o, 75o, 54o
Settings: 4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.