PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs BTN open 2.5bb

BB vs BTN open 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · BTN opens 2.5bb · Big blind to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 4.64bbYour cards?
1bb
2.5bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 41.4%Call 42.4%Raise 5/7.5bb 16.2%
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 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

BTN opens 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 41.4%, calls 42.4% and raises 5/7.5bb 16.2%. Always call: 22-33, A8s-A9s, K8s-K9s, K2s-K3s, Q9s, Q2s-Q7s, J2s-J6s, T6s, T2s-T4s, 95s, 74s-75s, 63s-64s, 52s, 42s+, A2o-AJo, K6o-KJo, Q8o-Q9o, J8o-J9o, T8o+, 98o, 87o, 76o, 65o. Always raise 5/7.5bb: TT+, 55-66, ATs+, A3s-A5s, KTs+, K5s, QJs, J9s+, T9s, 96s, 76s, AQo+. Mixed: 77-99, 44, A6s-A7s, A2s, K6s-K7s, K4s, QTs, Q8s, J7s-J8s, T7s-T8s, T5s, 97s+, 93s-94s, 84s+, 73s, 65s, 53s+, KQo, K5o, QTo+, Q6o-Q7o, JTo, 97o, 54o.

Always fold
92s, 82s-83s, 72s, 62s, 32s, K2o-K4o, Q2o-Q5o, J2o-J7o, T2o-T7o, 92o-96o, 82o-86o, 72o-75o, 62o-64o, 52o-53o, 42o+, 32o
Always call
22-33, A8s-A9s, K8s-K9s, K2s-K3s, Q9s, Q2s-Q7s, J2s-J6s, T6s, T2s-T4s, 95s, 74s-75s, 63s-64s, 52s, 42s+, A2o-AJo, K6o-KJo, Q8o-Q9o, J8o-J9o, T8o+, 98o, 87o, 76o, 65o
Always raise 5/7.5bb
TT+, 55-66, ATs+, A3s-A5s, KTs+, K5s, QJs, J9s+, T9s, 96s, 76s, AQo+
Mixed
77-99, 44, A6s-A7s, A2s, K6s-K7s, K4s, QTs, Q8s, J7s-J8s, T7s-T8s, T5s, 97s+, 93s-94s, 84s+, 73s, 65s, 53s+, KQo, K5o, QTo+, Q6o-Q7o, JTo, 97o, 54o
Settings: 4-max · 150bb · 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, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.