PokerSolver
PokerSolver/6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO 3-bet 4bb

BB vs CO 3-bet 4bb

6-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
6-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.46bbYour cards?
2bb
4bb
0.5bb

Tap your two cards.

Big blind's range

342 of 1,326 combos get here
Fold 18%Call 51.6%Raise 9.2bb 24.4%All-in 79.84bb 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 6-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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the big blind (BB) folds 18%, calls 51.6%, raises 9.2bb 24.4% and goes all-in 79.84bb 6%. Always call: 55-66, K7s, J9s, 97s. Always raise 9.2bb: AA. Mixed: QQ-KK, 77-TT, AJs+, A5s-A6s, A3s, K9s-KTs, K5s, Q9s+, JTs, J8s, T8s+, 98s, 86s, 64s, 53s, AKo, A9o-ATo, KJo+, JTo.

Always fold
No hand plays this every time
Always call
55-66, K7s, J9s, 97s
Always raise 9.2bb
AA
Always all-in 79.84bb
No hand plays this every time
Mixed
QQ-KK, 77-TT, AJs+, A5s-A6s, A3s, K9s-KTs, K5s, Q9s+, JTs, J8s, T8s+, 98s, 86s, 64s, 53s, AKo, A9o-ATo, KJo+, JTo
Settings: 6-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 24.92). 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.