PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO 3-bet 4bb

BB vs CO 3-bet 4bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · 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
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.3bbYour cards?
2bb
4bb
0.5bb

Tap your two cards.

Big blind's range

334 of 1,326 combos get here
Fold 21.3%Call 36.1%Raise 9.2bb 33.9%All-in 79.84bb 8.7%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 21.3%, calls 36.1%, raises 9.2bb 33.9% and goes all-in 79.84bb 8.7%. Always call: 88. Always raise 9.2bb: AA. Mixed: QQ-KK, 99-TT, 44-77, A2s+, KQs, K5s-KTs, QJs, Q9s, Q5s, J9s+, T7s-T8s, 96s-97s, 75s, 63s, 54s, 52s, AKo, KJo+, QJo, JTo.

Always fold
No hand plays this every time
Always call
88
Always raise 9.2bb
AA
Always all-in 79.84bb
No hand plays this every time
Mixed
QQ-KK, 99-TT, 44-77, A2s+, KQs, K5s-KTs, QJs, Q9s, Q5s, J9s+, T7s-T8s, 96s-97s, 75s, 63s, 54s, 52s, AKo, KJo+, QJo, JTo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.