PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 3-bet 6bb

BB vs SB 3-bet 6bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO opens 3bb, SB 3-bets to 6bb · Big blind to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 10.64bbYour cards?
1bb
3bb
6bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 91.8%Call 6.5%Raise 13.8bb 1.5%All-in 249.84bb 0.3%
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, SB 3-bets to 6bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

CO opens 3bb, SB 3-bets to 6bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 91.8%, calls 6.5%, raises 13.8bb 1.5% and goes all-in 249.84bb 0.3%. Always call: TT-JJ, 77, A5s. Mixed: QQ+, 88-99, 33-66, A9s+, A6s-A7s, A4s, A2s, KQs, KTs, QJs, JTs, T8s, 75s, 53s+, 43s, AQo+.

Always fold
22, A8s, A3s, KJs, K2s-K9s, Q2s-QTs, J2s-J9s, T9s, T2s-T7s, 92s+, 82s+, 76s, 72s-74s, 62s+, 52s, 42s, 32s, A2o-AJo, K2o+, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
TT-JJ, 77, A5s
Always raise 13.8bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
QQ+, 88-99, 33-66, A9s+, A6s-A7s, A4s, A2s, KQs, KTs, QJs, JTs, T8s, 75s, 53s+, 43s, AQo+
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.