PokerSolver/4-max · 80bb · 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) · 80bb · CO opens 2bb, 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

4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 5.64bbYour cards?

1bb

2bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 51.5%Call 36.8%Raise 4/6bb 11.7%

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, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

CO opens 2bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 51.5%, calls 36.8% and raises 4/6bb 11.7%. Always call: 77, 22-55, A7s, A2s-A4s, K6s-K8s, K4s, Q9s, Q7s, J8s, T8s, 94s, 73s-74s, 64s, 54s, 43s, AJo, A9o, K9o, 86o+, 76o, 54o. Always raise 4/6bb: TT+, 88, AQs+, KQs, QTs, AQo+. Mixed: 99, 66, A8s-AJs, A5s-A6s, K9s-KJs, K5s, K2s-K3s, QJs, Q8s, Q2s-Q6s, J9s+, J2s-J7s, T9s, T2s-T7s, 95s+, 92s-93s, 83s+, 75s+, 65s, 62s-63s, 52s-53s, 42s, ATo, A4o-A8o, A2o, KTo+, K7o-K8o, Q9o+, J9o+, T8o+, 97o, 75o, 65o, 53o, 42o.

Always fold: 82s, 72s, 32s, A3o, K2o-K6o, Q2o-Q8o, J2o-J8o, T2o-T7o, 98o, 92o-96o, 82o-85o, 72o-74o, 62o-64o, 52o, 43o, 32o
Always call: 77, 22-55, A7s, A2s-A4s, K6s-K8s, K4s, Q9s, Q7s, J8s, T8s, 94s, 73s-74s, 64s, 54s, 43s, AJo, A9o, K9o, 86o+, 76o, 54o
Always raise 4/6bb: TT+, 88, AQs+, KQs, QTs, AQo+
Mixed: 99, 66, A8s-AJs, A5s-A6s, K9s-KJs, K5s, K2s-K3s, QJs, Q8s, Q2s-Q6s, J9s+, J2s-J7s, T9s, T2s-T7s, 95s+, 92s-93s, 83s+, 75s+, 65s, 62s-63s, 52s-53s, 42s, ATo, A4o-A8o, A2o, KTo+, K7o-K8o, Q9o+, J9o+, T8o+, 97o, 75o, 65o, 53o, 42o

Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.