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

BB vs SB open 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · SB 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 4.14bbYour cards?
1bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 25.6%Call 49.6%Raise 5/7.5bb 24.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

SB opens 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 25.6%, calls 49.6% and raises 5/7.5bb 24.8%. Always call: A8s, A6s, K7s, K3s, Q2s-Q8s, J2s-J7s, T3s-T6s, 92s, 83s-85s, 73s, 63s, 52s, 43s, 32s, A4o-ATo, KTo, K6o-K8o, Q9o+, J9o, T8o, 97o+, 86o+, 75o+, 65o, 54o. Always raise 5/7.5bb: 99+, 55, A9s+, A4s-A5s, A2s, K9s+, QTs+, J9s+, T9s, 98s, 64s+, 54s, AQo+. Mixed: 66-88, 22-44, A7s, A3s, K8s, K4s-K6s, K2s, Q9s, J8s, T7s-T8s, T2s, 93s-97s, 86s+, 82s, 74s+, 72s, 62s, 53s, 42s, AJo, A2o-A3o, KJo+, K9o, K2o-K5o, Q3o-Q8o, JTo, J4o-J8o, T9o, T6o-T7o, 96o, 64o, 53o.

Always fold
Q2o, J2o-J3o, T2o-T5o, 92o-95o, 82o-85o, 72o-74o, 62o-63o, 52o, 42o+, 32o
Always call
A8s, A6s, K7s, K3s, Q2s-Q8s, J2s-J7s, T3s-T6s, 92s, 83s-85s, 73s, 63s, 52s, 43s, 32s, A4o-ATo, KTo, K6o-K8o, Q9o+, J9o, T8o, 97o+, 86o+, 75o+, 65o, 54o
Always raise 5/7.5bb
99+, 55, A9s+, A4s-A5s, A2s, K9s+, QTs+, J9s+, T9s, 98s, 64s+, 54s, AQo+
Mixed
66-88, 22-44, A7s, A3s, K8s, K4s-K6s, K2s, Q9s, J8s, T7s-T8s, T2s, 93s-97s, 86s+, 82s, 74s+, 72s, 62s, 53s, 42s, AJo, A2o-A3o, KJo+, K9o, K2o-K5o, Q3o-Q8o, JTo, J4o-J8o, T9o, T6o-T7o, 96o, 64o, 53o
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.