PokerSolver
PokerSolver/4-max · 250bb · 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) · 250bb · 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 · 250bb · 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

406 of 1,326 combos get here
Fold 37.8%Call 48.7%Raise 11.5bb 9.5%All-in 249.84bb 4%
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 250bb?

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, 250bb: the big blind (BB) folds 37.8%, calls 48.7%, raises 11.5bb 9.5% and goes all-in 249.84bb 4%. Always call: TT-JJ, 77, 55, 22-33, AJs, KQs, K3s, QTs, T8s, 97s, 85s. Mixed: QQ+, 88-99, 66, 44, AQs+, A3s-ATs, K8s-KJs, K5s, QJs, Q8s, Q3s-Q5s, J9s+, J2s, T9s, T7s, 87s, 76s, 53s+, AKo, ATo, QTo+, JTo.

Always fold
J7s, 93s, 72s, 32s, J9o, T7o, 98o, 76o
Always call
TT-JJ, 77, 55, 22-33, AJs, KQs, K3s, QTs, T8s, 97s, 85s
Always raise 11.5bb
No hand plays this every time
Always all-in 249.84bb
No hand plays this every time
Mixed
QQ+, 88-99, 66, 44, AQs+, A3s-ATs, K8s-KJs, K5s, QJs, Q8s, Q3s-Q5s, J9s+, J2s, T9s, T7s, 87s, 76s, 53s+, AKo, ATo, QTo+, JTo
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.

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.