PokerSolver
PokerSolver/6-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

6-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

6-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 21.26bbYour cards?
6bb
13.8bb
0.5bb

Tap your two cards.

Big blind's range

636 of 1,326 combos get here
Fold 80.3%Call 9.6%All-in 59.84bb 10.1%
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 6-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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the big blind (BB) folds 80.3%, calls 9.6% and goes all-in 59.84bb 10.1%. Always call: 66-77, AJs. Always all-in 59.84bb: QQ-KK, AKs, A3s, AKo. Mixed: AA, 88-JJ, 55, AQs, A8s-ATs, A4s-A6s, A2s, KTs+, QJs, JTs, T9s, 87s, 76s, 65s.

Always fold
A7s, K3s-K9s, Q6s-QTs, Q3s-Q4s, J4s-J9s, T4s-T8s, T2s, 96s+, 84s-86s, 74s-75s, 72s, 64s, 53s+, 42s, 32s, A8o-AQo, A5o-A6o, KTo+, K8o, QJo, Q9o, J8o+, T8o+, 98o, 64o+, 54o
Always call
66-77, AJs
Always all-in 59.84bb
QQ-KK, AKs, A3s, AKo
Mixed
AA, 88-JJ, 55, AQs, A8s-ATs, A4s-A6s, A2s, KTs+, QJs, JTs, T9s, 87s, 76s, 65s
Settings: 6-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 24.91). 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.