PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs CO 4-bet 13.8bb

BB vs CO 4-bet 13.8bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (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

4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 20.94bbYour cards?
6bb
13.8bb
0.5bb

Tap your two cards.

Big blind's range

404 of 1,326 combos get here
Fold 65.2%Call 23.6%Raise 30.36bb 9.3%All-in 199.84bb 1.9%
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 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

CO opens 2bb, BB 3-bets to 6bb, CO 4-bets to 13.8bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 65.2%, calls 23.6%, raises 30.36bb 9.3% and goes all-in 199.84bb 1.9%. Always call: 77, 33-44, 75s. Mixed: 88+, 55-66, A7s+, A2s-A5s, KTs+, K5s-K6s, Q8s+, J9s+, T9s, T7s, 98s, 87s, 76s, 53s+, AKo.

Always fold
A6s, K7s-K9s, K4s, Q3s, J5s-J8s, T8s, T5s, 96s-97s, 86s, 64s+, AQo, A9o, KQo, JTo
Always call
77, 33-44, 75s
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, KTs+, K5s-K6s, Q8s+, J9s+, T9s, T7s, 98s, 87s, 76s, 53s+, AKo
Settings: 4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 200bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.