PokerSolver
PokerSolver/5-max · 200bb · 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) · 200bb · CO opens 2bb, BB 3-bets to 6bb, CO 4-bets to 13.8bb · Big blind to act

5-max · 200bb · 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

436 of 1,326 combos get here
Fold 67.1%Call 22.4%Raise 30.36bb 8.3%All-in 199.84bb 2.3%
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 200bb?

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, 200bb: the big blind (BB) folds 67.1%, calls 22.4%, raises 30.36bb 8.3% and goes all-in 199.84bb 2.3%. Always call: 77, 44. Mixed: 88+, 55-66, A7s+, A2s-A5s, KQs, Q9s+, JTs, J8s, T8s+, 97s+, 86s, 76s, 65s, 54s, AKo.

Always fold
A6s, K5s-KJs, Q6s-Q8s, Q4s, J9s, J7s, T6s-T7s, 87s, 85s, 74s-75s, 64s, 53s, AJo-AQo, A8o, KJo+, QTo+, JTo, 64o
Always call
77, 44
Always raise 30.36bb
No hand plays this every time
Always all-in 199.84bb
No hand plays this every time
Mixed
88+, 55-66, A7s+, A2s-A5s, KQs, Q9s+, JTs, J8s, T8s+, 97s+, 86s, 76s, 65s, 54s, AKo
Settings: 5-max · 200bb · 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, 200bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.99). 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.