PokerSolver
PokerSolver/6-max · 80bb · 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) · 80bb · CO opens 2bb, BB 3-bets to 6bb, CO 4-bets to 13.8bb · Big blind to act

6-max · 80bb · 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

668 of 1,326 combos get here
Fold 81.1%Call 11.4%All-in 79.84bb 7.4%
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 6bb, CO 4-bets to 13.8bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

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, 80bb: the big blind (BB) folds 81.1%, calls 11.4% and goes all-in 79.84bb 7.4%. Always call: 88, 55, AQs. Always all-in 79.84bb: A6s. Mixed: 99+, 66, 44, AKs, A7s-AJs, A2s-A5s, KTs+, QTs+, T8s+, 98s, 76s, 65s, AQo+.

Always fold
K2s-K9s, Q8s-Q9s, Q6s, J7s+, J5s, T6s-T7s, T4s, 96s-97s, 85s+, 75s, 73s, 64s, 52s+, 43s, ATo-AJo, A3o-A8o, KTo+, K5o, QTo+, J8o+, T7o+, 98o, 76o, 65o, 54o
Always call
88, 55, AQs
Always all-in 79.84bb
A6s
Mixed
99+, 66, 44, AKs, A7s-AJs, A2s-A5s, KTs+, QTs+, T8s+, 98s, 76s, 65s, AQo+
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.

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.