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

BB vs SB iso raise 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, SB isolates to 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 · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differCOBTNSBBB

Pot 5.14bbYour cards?

1bb

2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 85.2%Call 7.6%Raise 5/7.5bb 7.2%

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, SB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

CO limps, SB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 85.2%, calls 7.6% and raises 5/7.5bb 7.2%. Always call: 22-33, A5s. Always raise 5/7.5bb: KK+, T9s. Mixed: 44-QQ, A6s+, A2s-A4s, K9s+, K4s-K5s, K2s, Q7s-QTs, Q4s, J9s+, J6s, J4s, T8s, 97s+, 86s, 75s+, 64s, 54s, AQo+, QJo.

Always fold: K6s-K8s, K3s, QJs, Q5s-Q6s, Q2s-Q3s, J7s-J8s, J5s, J2s-J3s, T2s-T7s, 92s-96s, 87s, 82s-85s, 72s-74s, 65s, 62s-63s, 52s-53s, 42s+, 32s, A2o-AJo, K2o+, Q2o-QTo, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: 22-33, A5s
Always raise 5/7.5bb: KK+, T9s
Mixed: 44-QQ, A6s+, A2s-A4s, K9s+, K4s-K5s, K2s, Q7s-QTs, Q4s, J9s+, J6s, J4s, T8s, 97s+, 86s, 75s+, 64s, 54s, AQo+, QJo

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.