PokerSolver/4-max · 100bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN 3-bet 4bb

BB vs BTN 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 100bb · CO opens 2bb, BTN 3-bets to 4bb · 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 · 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

2bb

4bb

0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 89.1%Call 4%Raise 9.2bb 3.8%All-in 99.84bb 3.1%

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 2bb, BTN 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 100bb?

CO opens 2bb, BTN 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 100bb: the big blind (BB) folds 89.1%, calls 4%, raises 9.2bb 3.8% and goes all-in 99.84bb 3.1%. Always raise 9.2bb: AA, ATs. Mixed: 22-KK, AJs+, A6s-A9s, A3s-A4s, KTs+, K6s, K3s-K4s, QTs+, Q7s, J9s+, T7s-T8s, 74s-75s, 53s+, AJo+, KQo.

Always fold: A5s, A2s, K7s-K9s, K5s, K2s, Q8s-Q9s, Q2s-Q6s, J2s-J8s, T9s, T2s-T6s, 92s+, 82s+, 76s, 72s-73s, 62s+, 52s, 42s+, 32s, A2o-ATo, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: No hand plays this every time
Always raise 9.2bb: AA, ATs
Always all-in 99.84bb: No hand plays this every time
Mixed: 22-KK, AJs+, A6s-A9s, A3s-A4s, KTs+, K6s, K3s-K4s, QTs+, Q7s, J9s+, T7s-T8s, 74s-75s, 53s+, AJo+, KQo

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.