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

BB vs CO 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 limps, BB isolates to 2.5bb, CO 3-bets to 5bb · 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 8.64bbYour cards?
2.5bb
5bb
0.5bb

Tap your two cards.

Big blind's range

460 of 1,326 combos get here
Fold 52.5%Call 33%Raise 11.5bb 10.9%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 2.5bb, CO 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 52.5%, calls 33%, raises 11.5bb 10.9% and goes all-in 149.84bb 3.6%. Always call: 88, ATs, KTs, K8s, K6s, JTs. Mixed: JJ+, 99, 33-77, AJs+, A3s-A8s, KJs+, K9s, K3s-K4s, Q8s+, J9s, T6s+, 97s+, 86s, 75s, 64s+, 62s, 54s, 43s, AJo+, A9o, QJo, JTo.

Always fold
Q3s, J8s, T4s, 95s, 63s, T6o
Always call
88, ATs, KTs, K8s, K6s, JTs
Always raise 11.5bb
No hand plays this every time
Always all-in 149.84bb
No hand plays this every time
Mixed
JJ+, 99, 33-77, AJs+, A3s-A8s, KJs+, K9s, K3s-K4s, Q8s+, J9s, T6s+, 97s+, 86s, 75s, 64s+, 62s, 54s, 43s, AJo+, A9o, QJo, 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.