PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO 4-bet 9.2bb

BB vs CO 4-bet 9.2bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO opens 2bb, BB 3-bets to 4bb, CO 4-bets to 9.2bb · 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
Tournament
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 14.5bbYour cards?
4bb
9.2bb
0.5bb

Tap your two cards.

Big blind's range

350 of 1,326 combos get here
Fold 51.6%Call 39.5%Raise 20.24bb 8.6%All-in 249.84bb 0.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO opens 2bb, BB 3-bets to 4bb, CO 4-bets to 9.2bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO opens 2bb, BB 3-bets to 4bb, CO 4-bets to 9.2bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 51.6%, calls 39.5%, raises 20.24bb 8.6% and goes all-in 249.84bb 0.4%. Always call: TT, 66-88, AQs, ATs, A5s, AKo. Always raise 20.24bb: AA. Mixed: JJ-KK, 99, 55, AKs, AJs, A8s-A9s, A6s, A4s, A2s, K9s+, QTs+, JTs, J8s, T8s+, 86s+, 76s, 64s+, AQo, QTo.

Always fold
K7s, 53s, AJo, JTo, T9o, 76o
Always call
TT, 66-88, AQs, ATs, A5s, AKo
Always raise 20.24bb
AA
Always all-in 249.84bb
No hand plays this every time
Mixed
JJ-KK, 99, 55, AKs, AJs, A8s-A9s, A6s, A4s, A2s, K9s+, QTs+, JTs, J8s, T8s+, 86s+, 76s, 64s+, AQo, QTo
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.