PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB open 2bb

BB vs SB open 2bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · SB opens 2bb · 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 3.64bbYour cards?
1bb
2bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 8.2%Call 65.6%Raise 4/6bb 26.2%
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 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

SB opens 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 8.2%, calls 65.6% and raises 4/6bb 26.2%. Always call: K6s-K7s, K4s, Q6s, Q2s-Q4s, J6s, J4s, J2s, T2s-T3s, 95s, 84s, 72s-73s, 62s, 32s, A3o-A8o, K9o, K7o, K3o-K5o, Q8o-QTo, Q5o-Q6o, Q2o, J6o, J2o-J4o, T9o, T5o, T3o, 97o+, 94o, 86o+, 75o+, 63o+, 53o+, 43o. Always raise 4/6bb: 55+, ATs+, A5s, A2s-A3s, KJs, K9s, QTs+, JTs, 98s, 76s, AQo+. Mixed: 22-44, A6s-A9s, A4s, KQs, KTs, K8s, K5s, K2s-K3s, Q7s-Q9s, Q5s, J7s-J9s, J5s, J3s, T4s+, 96s-97s, 92s-94s, 85s+, 82s-83s, 74s-75s, 63s+, 52s+, 42s+, A9o-AJo, A2o, KTo+, K8o, K6o, K2o, QJo, Q7o, Q3o-Q4o, J7o+, J5o, T6o-T8o, T4o, T2o, 95o-96o, 92o-93o, 84o-85o, 74o, 52o, 42o.

Always fold
82o-83o, 72o-73o, 62o, 32o
Always call
K6s-K7s, K4s, Q6s, Q2s-Q4s, J6s, J4s, J2s, T2s-T3s, 95s, 84s, 72s-73s, 62s, 32s, A3o-A8o, K9o, K7o, K3o-K5o, Q8o-QTo, Q5o-Q6o, Q2o, J6o, J2o-J4o, T9o, T5o, T3o, 97o+, 94o, 86o+, 75o+, 63o+, 53o+, 43o
Always raise 4/6bb
55+, ATs+, A5s, A2s-A3s, KJs, K9s, QTs+, JTs, 98s, 76s, AQo+
Mixed
22-44, A6s-A9s, A4s, KQs, KTs, K8s, K5s, K2s-K3s, Q7s-Q9s, Q5s, J7s-J9s, J5s, J3s, T4s+, 96s-97s, 92s-94s, 85s+, 82s-83s, 74s-75s, 63s+, 52s+, 42s+, A9o-AJo, A2o, KTo+, K8o, K6o, K2o, QJo, Q7o, Q3o-Q4o, J7o+, J5o, T6o-T8o, T4o, T2o, 95o-96o, 92o-93o, 84o-85o, 74o, 52o, 42o
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.