PokerSolver
PokerSolver/4-max · 150bb · 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) · 150bb · CO limps, BTN isolates to 2.5bb, SB calls · 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 · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 7.64bbYour cards?
1bb
1bb
2.5bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 87.5%Call 5.6%Raise 5/7.5bb 6.9%
Tap a hand, or type one above, to see its exact mix.

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

CO limps, BTN isolates to 2.5bb, SB calls in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 87.5%, calls 5.6% and raises 5/7.5bb 6.9%. Always call: 55, 52s. Always raise 5/7.5bb: QQ+, AKo. Mixed: 66-JJ, 22-44, A9s+, A7s, A3s-A5s, KJs+, K9s, K5s, QTs+, Q8s, Q6s, J7s-J9s, J5s, 97s+, 93s, 87s, 85s, 76s, 65s, AJo-AQo, KQo, J8o, 97o.

Always fold
A8s, A6s, A2s, KTs, K6s-K8s, K2s-K4s, Q9s, Q7s, Q2s-Q5s, JTs, J6s, J2s-J4s, T2s+, 94s-96s, 92s, 86s, 82s-84s, 72s-75s, 62s-64s, 53s+, 42s+, 32s, A2o-ATo, K2o-KJo, Q2o+, J9o+, J2o-J7o, T2o+, 98o, 92o-96o, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
55, 52s
Always raise 5/7.5bb
QQ+, AKo
Mixed
66-JJ, 22-44, A9s+, A7s, A3s-A5s, KJs+, K9s, K5s, QTs+, Q8s, Q6s, J7s-J9s, J5s, 97s+, 93s, 87s, 85s, 76s, 65s, AJo-AQo, KQo, J8o, 97o
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.

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.