PokerSolver
PokerSolver/5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs CO 4-bet 13.8bb

BB vs CO 4-bet 13.8bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 60bb · CO opens 2bb, BB 3-bets to 6bb, CO 4-bets to 13.8bb · Big blind to act

5-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 21.1bbYour cards?
6bb
13.8bb
0.5bb

Tap your two cards.

Big blind's range

720 of 1,326 combos get here
Fold 83.3%Call 7.2%All-in 59.84bb 9.5%
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 6bb, CO 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 60bb?

CO opens 2bb, BB 3-bets to 6bb, CO 4-bets to 13.8bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the big blind (BB) folds 83.3%, calls 7.2% and goes all-in 59.84bb 9.5%. Always all-in 59.84bb: QQ-KK, AKs, A2s-A3s, AKo. Mixed: AA, TT-JJ, 88, 66, ATs-AQs, A4s-A8s, KQs, K9s-KTs, QJs, Q9s, JTs, 87s, 76s, 65s, 54s, AQo.

Always fold
KJs, K2s-K8s, QTs, Q8s, Q5s-Q6s, J4s-J8s, T5s+, 94s+, 83s-86s, 73s, 64s, 52s-53s, 43s, AJo, A5o-A8o, KTo+, K8o, Q9o+, JTo, T8o+, 98o, 85o+, 75o+, 65o, 54o
Always call
No hand plays this every time
Always all-in 59.84bb
QQ-KK, AKs, A2s-A3s, AKo
Mixed
AA, TT-JJ, 88, 66, ATs-AQs, A4s-A8s, KQs, K9s-KTs, QJs, Q9s, JTs, 87s, 76s, 65s, 54s, AQo
Settings: 5-max · 60bb · 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, 60bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.3). 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.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: 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.