PokerSolver
PokerSolver/4-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN open 3bb

BB vs BTN open 3bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · BTN opens 3bb · 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 5.14bbYour cards?
1bb
3bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 54.3%Call 30%Raise 6/9bb 15.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 200bb?

BTN opens 3bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 200bb: the big blind (BB) folds 54.3%, calls 30% and raises 6/9bb 15.7%. Always call: A8s, K9s, K2s-K3s, Q9s, Q2s-Q5s, J6s-J7s, J3s, 85s, 74s-75s, 64s, 53s, 43s, AJo, A3o-A9o, K8o-KJo, Q9o, J9o. Always raise 6/9bb: TT+, 55-66, ATs+, A4s-A5s, KTs+, QTs+, J9s+, T9s, AKo. Mixed: 77-99, 22-44, A9s, A6s-A7s, A2s-A3s, K4s-K8s, Q6s-Q8s, J8s, J4s-J5s, J2s, T5s-T8s, 95s+, 86s+, 76s, 65s, 63s, 54s, AQo, ATo, KQo, QTo+, JTo, T8o+, 98o, 76o, 65o.

Always fold
T2s-T4s, 92s-94s, 82s-84s, 72s-73s, 62s, 52s, 42s, 32s, A2o, K2o-K7o, Q2o-Q8o, J2o-J8o, T2o-T7o, 92o-97o, 82o+, 72o-75o, 62o-64o, 52o+, 42o+, 32o
Always call
A8s, K9s, K2s-K3s, Q9s, Q2s-Q5s, J6s-J7s, J3s, 85s, 74s-75s, 64s, 53s, 43s, AJo, A3o-A9o, K8o-KJo, Q9o, J9o
Always raise 6/9bb
TT+, 55-66, ATs+, A4s-A5s, KTs+, QTs+, J9s+, T9s, AKo
Mixed
77-99, 22-44, A9s, A6s-A7s, A2s-A3s, K4s-K8s, Q6s-Q8s, J8s, J4s-J5s, J2s, T5s-T8s, 95s+, 86s+, 76s, 65s, 63s, 54s, AQo, ATo, KQo, QTo+, JTo, T8o+, 98o, 76o, 65o
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.