PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO 3-bet 5bb

BB vs CO 3-bet 5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 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
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 8.8bbYour cards?
2.5bb
5bb
0.5bb

Tap your two cards.

Big blind's range

396 of 1,326 combos get here
Fold 32.8%Call 54.2%Raise 11.5bb 9.3%All-in 249.84bb 3.8%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO limps, BB isolates to 2.5bb, CO 3-bets to 5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 32.8%, calls 54.2%, raises 11.5bb 9.3% and goes all-in 249.84bb 3.8%. Always call: JJ, 44-77, ATs, A5s, KQs, 64s, AKo, KJo. Mixed: QQ+, 88-99, 33, AQs+, A6s-A9s, A2s-A4s, K6s-KTs, K2s, Q8s+, JTs, J6s-J7s, T7s-T8s, 98s, 96s, 75s+, 54s, 43s, ATo-AJo, KQo, JTo, 76o.

Always fold
T9s, 52s
Always call
JJ, 44-77, ATs, A5s, KQs, 64s, AKo, KJo
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, 33, AQs+, A6s-A9s, A2s-A4s, K6s-KTs, K2s, Q8s+, JTs, J6s-J7s, T7s-T8s, 98s, 96s, 75s+, 54s, 43s, ATo-AJo, KQo, JTo, 76o
Settings: 5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 250bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.