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

BB vs CO 3-bet 4bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, BB isolates to 2bb, CO 3-bets to 4bb · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 7.14bbYour cards?
2bb
4bb
0.5bb

Tap your two cards.

Big blind's range

430 of 1,326 combos get here
Fold 27.4%Call 53.6%Raise 9.2bb 15.4%All-in 149.84bb 3.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 27.4%, calls 53.6%, raises 9.2bb 15.4% and goes all-in 149.84bb 3.6%. Always call: JJ, 88, K9s-KTs, 87s, 65s, A8o, KTo. Always raise 9.2bb: QQ. Mixed: KK+, 99-TT, 22-77, AQs+, A7s-A8s, A3s-A5s, KJs+, K6s-K7s, Q8s+, Q6s, J8s+, J3s, T7s+, T4s, 96s+, 76s, 73s, 64s, 54s, 42s, AKo, ATo-AJo, KQo, QTo, JTo.

Always fold
62s, 54o
Always call
JJ, 88, K9s-KTs, 87s, 65s, A8o, KTo
Always raise 9.2bb
QQ
Always all-in 149.84bb
No hand plays this every time
Mixed
KK+, 99-TT, 22-77, AQs+, A7s-A8s, A3s-A5s, KJs+, K6s-K7s, Q8s+, Q6s, J8s+, J3s, T7s+, T4s, 96s+, 76s, 73s, 64s, 54s, 42s, AKo, ATo-AJo, KQo, QTo, JTo
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.

Rake sources for the games it fits: 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.