PokerSolver
PokerSolver/5-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB 3-bet 4bb

BB vs SB 3-bet 4bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · CO opens 2bb, SB 3-bets to 4bb · Big blind to act

5-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.8bbYour cards?
1bb
2bb
4bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 88.8%Call 8.6%Raise 9.2bb 1.9%All-in 199.84bb 0.7%
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 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 200bb?

CO opens 2bb, SB 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 200bb: the big blind (BB) folds 88.8%, calls 8.6%, raises 9.2bb 1.9% and goes all-in 199.84bb 0.7%. Always call: QQ, JTs. Mixed: KK+, 22-JJ, A6s+, A2s-A4s, KTs+, K7s, K4s, QTs+, Q3s, J9s, T9s, 97s+, 86s, 76s, 64s+, ATo+, KQo, QJo.

Always fold
A5s, K8s-K9s, K5s-K6s, K2s-K3s, Q4s-Q9s, Q2s, J2s-J8s, T2s-T8s, 92s-96s, 87s, 82s-85s, 72s-75s, 62s-63s, 52s+, 42s+, 32s, A2o-A9o, K2o-KJo, Q2o-QTo, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
QQ, JTs
Always raise 9.2bb
No hand plays this every time
Always all-in 199.84bb
No hand plays this every time
Mixed
KK+, 22-JJ, A6s+, A2s-A4s, KTs+, K7s, K4s, QTs+, Q3s, J9s, T9s, 97s+, 86s, 76s, 64s+, ATo+, KQo, QJo
Settings: 5-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 200bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.99). 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.