PokerSolver
PokerSolver/4-max · 250bb · 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) · 250bb · SB opens 2.5bb · Big blind to act

Fits exactlyno game we have checked
Close1 games
  • CoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
4-max · 250bb · 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 27.3%Call 45%Raise 5/7.5bb 27.7%
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 250bb?

SB opens 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 27.3%, calls 45% and raises 5/7.5bb 27.7%. Always call: A7s, Q2s-Q5s, J2s-J7s, T2s-T4s, 92s, 84s-85s, 63s, 52s, 42s, A4o-A9o, K8o-K9o, K4o, Q7o-Q8o, T9o, 97o, 86o+, 75o+, 65o, 54o. Always raise 5/7.5bb: 44+, ATs+, A8s, A3s-A5s, KTs+, QTs+, J9s+, T9s, 97s+, 86s+, 76s, 64s, AQo+. Mixed: 22-33, A9s, A6s, A2s, K2s-K9s, Q6s-Q9s, J8s, T5s-T8s, 93s-96s, 82s-83s, 73s-75s, 65s, 62s, 53s+, 43s, 32s, ATo-AJo, A2o-A3o, KTo+, K5o-K7o, K2o-K3o, Q9o+, Q4o-Q6o, J7o+, J4o-J5o, T6o-T8o, 98o, 96o, 64o, 53o.

Always fold
72s, Q2o-Q3o, J6o, J2o-J3o, T2o-T5o, 92o-95o, 82o-85o, 72o-74o, 62o-63o, 52o, 42o+, 32o
Always call
A7s, Q2s-Q5s, J2s-J7s, T2s-T4s, 92s, 84s-85s, 63s, 52s, 42s, A4o-A9o, K8o-K9o, K4o, Q7o-Q8o, T9o, 97o, 86o+, 75o+, 65o, 54o
Always raise 5/7.5bb
44+, ATs+, A8s, A3s-A5s, KTs+, QTs+, J9s+, T9s, 97s+, 86s+, 76s, 64s, AQo+
Mixed
22-33, A9s, A6s, A2s, K2s-K9s, Q6s-Q9s, J8s, T5s-T8s, 93s-96s, 82s-83s, 73s-75s, 65s, 62s, 53s+, 43s, 32s, ATo-AJo, A2o-A3o, KTo+, K5o-K7o, K2o-K3o, Q9o+, Q4o-Q6o, J7o+, J4o-J5o, T6o-T8o, 98o, 96o, 64o, 53o
Settings: 4-max · 250bb · 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, 250bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.

Rake sources for the games it fits: 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.