PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN call

BB vs BTN call

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO opens 3bb, BTN 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 · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 8.14bbYour cards?

1bb

3bb

0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 79.9%Call 8%Raise 6/9bb 12.2%

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 3bb, BTN calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO opens 3bb, BTN calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 79.9%, calls 8% and raises 6/9bb 12.2%. Always call: 22-33, A7s, A2s. Always raise 6/9bb: TT+, AJs+, KTs+, QTs+, JTs, AQo+. Mixed: 44-99, A8s-ATs, A3s-A6s, K5s-K9s, Q9s, J8s-J9s, T8s+, 97s+, 87s, 76s, 64s+, 54s, 43s, ATo-AJo, KTo+, QJo.

Always fold: K2s-K4s, Q2s-Q8s, J2s-J7s, T2s-T7s, 92s-96s, 82s-86s, 72s-75s, 62s-63s, 52s-53s, 42s, 32s, A2o-A9o, K2o-K9o, Q2o-QTo, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: 22-33, A7s, A2s
Always raise 6/9bb: TT+, AJs+, KTs+, QTs+, JTs, AQo+
Mixed: 44-99, A8s-ATs, A3s-A6s, K5s-K9s, Q9s, J8s-J9s, T8s+, 97s+, 87s, 76s, 64s+, 54s, 43s, ATo-AJo, KTo+, QJo

Settings: 4-max · 100bb · 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, 100bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.66). 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.