PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB call

BB vs SB call

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO opens 2bb, SB calls · Big blind to act

4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.64bbYour cards?
1bb
2bb
2bb

Tap your two cards.

  • The solve has no call for Big blind here: a call would make it a 3-way pot, and this solve stops before that. Multiway pots like this aren't covered yet, so only fold or raise can be shown.

Big blind's range

1,326 of 1,326 combos get here
Fold 84.2%Raise 4/6bb 15.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO opens 2bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

CO opens 2bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the big blind (BB) folds 84.2% and raises 4/6bb 15.8%. Always raise 4/6bb: 44+, A7s+, A3s-A5s, K9s+, QTs+, J9s+, AQo+. Mixed: 22-33, A6s, A2s, K6s-K8s, Q9s, T8s+, 97s+, 76s, 65s, 54s, AJo, KQo.

Always fold
K2s-K5s, Q2s-Q8s, J2s-J8s, T2s-T7s, 92s-96s, 82s+, 72s-75s, 62s-64s, 52s-53s, 42s+, 32s, A2o-ATo, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always raise 4/6bb
44+, A7s+, A3s-A5s, K9s+, QTs+, J9s+, AQo+
Mixed
22-33, A6s, A2s, K6s-K8s, Q9s, T8s+, 97s+, 76s, 65s, 54s, AJo, KQo
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.

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.