PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 3-bet 4bb

BB vs SB 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO opens 2bb, SB 3-bets to 4bb · Big blind to act

4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 7.64bbYour cards?
1bb
2bb
4bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 88.8%Call 9%Raise 9.2bb 2%All-in 199.84bb 0.2%
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 2bb, SB 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

CO opens 2bb, SB 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 88.8%, calls 9%, raises 9.2bb 2% and goes all-in 199.84bb 0.2%. Always call: QQ-KK, 77, AQs. Mixed: AA, 88-JJ, 22-66, AKs, A8s-AJs, A3s-A6s, KTs+, K8s, K6s, K4s, QTs+, JTs, T8s+, 96s, 86s+, 75s+, 65s, 63s, 54s, 42s, AJo+.

Always fold
A7s, A2s, K9s, K7s, K5s, K2s-K3s, Q2s-Q9s, J2s-J9s, T2s-T7s, 97s+, 92s-95s, 82s-85s, 72s-74s, 64s, 62s, 52s-53s, 43s, 32s, A2o-ATo, K2o+, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
QQ-KK, 77, AQs
Always raise 9.2bb
No hand plays this every time
Always all-in 199.84bb
No hand plays this every time
Mixed
AA, 88-JJ, 22-66, AKs, A8s-AJs, A3s-A6s, KTs+, K8s, K6s, K4s, QTs+, JTs, T8s+, 96s, 86s+, 75s+, 65s, 63s, 54s, 42s, AJo+
Settings: 4-max · 200bb · 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, 200bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: 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.