PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 3-bet 5bb

BB vs SB 3-bet 5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO opens 2.5bb, SB 3-bets to 5bb · Big blind to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 9.14bbYour cards?
1bb
2.5bb
5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 92.6%Call 3.3%Raise 11.5bb 3.6%All-in 149.84bb 0.5%
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 2.5bb, SB 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO opens 2.5bb, SB 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 92.6%, calls 3.3%, raises 11.5bb 3.6% and goes all-in 149.84bb 0.5%. Always raise 11.5bb: AA. Mixed: 55-KK, 22-33, ATs+, A5s-A6s, A2s-A3s, KJs+, K8s, Q9s-QTs, Q6s, Q3s, JTs, J8s, T7s, 76s, 65s, 53s+, 42s, AQo+.

Always fold
44, A7s-A9s, A4s, K9s-KTs, K2s-K7s, QJs, Q7s-Q8s, Q4s-Q5s, Q2s, J9s, J2s-J7s, T8s+, T2s-T6s, 92s+, 82s+, 72s-75s, 62s-64s, 52s, 43s, 32s, A2o-AJo, K2o+, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
No hand plays this every time
Always raise 11.5bb
AA
Always all-in 149.84bb
No hand plays this every time
Mixed
55-KK, 22-33, ATs+, A5s-A6s, A2s-A3s, KJs+, K8s, Q9s-QTs, Q6s, Q3s, JTs, J8s, T7s, 76s, 65s, 53s+, 42s, AQo+
Settings: 4-max · 150bb · 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, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.