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 3bb, 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

280 of 1,326 combos get here
Fold 50.7%Call 35.8%All-in 59.84bb 13.4%
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 3bb, 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 3bb, 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 50.7%, calls 35.8% and goes all-in 59.84bb 13.4%. Always call: 88, ATs-AQs, KTs, QTs, JTs, 98s, 54s, AQo. Always all-in 59.84bb: KK, AKs, AKo. Mixed: AA, TT, 55, A5s-A7s, A3s, KJs+, KQo.

Always fold
ATo, A8o, KTo, QTo, JTo, T9o
Always call
88, ATs-AQs, KTs, QTs, JTs, 98s, 54s, AQo
Always all-in 59.84bb
KK, AKs, AKo
Mixed
AA, TT, 55, A5s-A7s, A3s, KJs+, KQo
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.