PokerSolver
PokerSolver/6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB 3-bet 4bb

BB vs SB 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN opens 2bb, SB 3-bets to 4bb · Big blind to act

6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.96bbYour cards?
1bb
2bb
4bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 84.3%Call 12.1%Raise 9.2bb 3.5%All-in 249.84bb 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 BTN opens 2bb, SB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN opens 2bb, SB 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 84.3%, calls 12.1%, raises 9.2bb 3.5% and goes all-in 249.84bb 0.2%. Always call: QQ, 88, 66, ATs-AJs, KQo. Mixed: KK+, 99-JJ, 77, 22-55, AQs+, A2s-A9s, K9s+, K5s, QTs+, J9s, T7s+, 98s, 84s, 76s, 64s+, 54s, 43s, AJo+, KTo, QTo+, JTo.

Always fold
K6s-K8s, K2s-K4s, Q2s-Q9s, JTs, J2s-J8s, T2s-T6s, 92s-97s, 85s+, 82s-83s, 72s-75s, 62s-63s, 52s-53s, 42s, 32s, A2o-ATo, KJo, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
QQ, 88, 66, ATs-AJs, KQo
Always raise 9.2bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
KK+, 99-JJ, 77, 22-55, AQs+, A2s-A9s, K9s+, K5s, QTs+, J9s, T7s+, 98s, 84s, 76s, 64s+, 54s, 43s, AJo+, KTo, QTo+, JTo
Settings: 6-max · 250bb · 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, 250bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 29.27). 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.