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 · BTN opens 3bb, 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 · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 7.64bbYour cards?

1bb

3bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 66.7%Call 19.3%Raise 6/9bb 14%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 3bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

BTN opens 3bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 66.7%, calls 19.3% and raises 6/9bb 14%. Always call: 22-55, A3s-A4s, K3s-K7s, Q6s-Q7s, T7s, 64s+, 53s, 43s, A9o, KJo, JTo. Always raise 6/9bb: 99+, ATs+, KTs+, QJs, 97s, AQo+. Mixed: 66-88, A5s-A9s, A2s, K8s-K9s, K2s, Q8s-QTs, Q3s-Q5s, J7s+, T8s+, T6s, 98s, 95s-96s, 85s+, 74s+, 63s, 54s, 42s, ATo-AJo, A8o, KQo, KTo, QTo+, T9o, 65o.

Always fold: Q2s, J2s-J6s, T2s-T5s, 92s-94s, 82s-84s, 72s-73s, 62s, 52s, 32s, A2o-A7o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o-T8o, 92o+, 82o+, 72o+, 62o-64o, 52o+, 42o+, 32o
Always call: 22-55, A3s-A4s, K3s-K7s, Q6s-Q7s, T7s, 64s+, 53s, 43s, A9o, KJo, JTo
Always raise 6/9bb: 99+, ATs+, KTs+, QJs, 97s, AQo+
Mixed: 66-88, A5s-A9s, A2s, K8s-K9s, K2s, Q8s-QTs, Q3s-Q5s, J7s+, T8s+, T6s, 98s, 95s-96s, 85s+, 74s+, 63s, 54s, 42s, ATo-AJo, A8o, KQo, KTo, QTo+, T9o, 65o

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.