PokerSolver
PokerSolver/4-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BB iso raise 2.5bb

SB vs BB iso raise 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · SB limps, BB isolates to 2.5bb · Small blind to act

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.

Small blind's range

950 of 1,326 combos get here
Fold 22.7%Call 57.3%Raise 5/7.5bb 20%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when SB limps, BB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 250bb?

SB limps, BB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 250bb: the small blind (SB) folds 22.7%, calls 57.3% and raises 5/7.5bb 20%. Always call: 33, K2s-K7s, Q2s-Q8s, J3s-J6s, T6s, T3s, 75s, 64s+, 53s, 43s, A2o-ATo, KJo, K6o-K9o, Q8o+, J8o+, T8o+, 97o+, 87o. Always raise 5/7.5bb: 88+, A8s+, KTs+, QTs+, JTs, AQo. Mixed: 44-77, 22, A2s-A7s, K8s-K9s, Q9s, J7s-J9s, J2s, T7s+, T4s, 93s+, 84s+, 76s, 74s, 54s, AJo, KQo, KTo, K5o, Q6o-Q7o, T7o, 76o, 65o.

Always fold
T2s, K2o-K4o, Q5o, J7o, T6o, 96o, 86o, 75o, 54o
Always call
33, K2s-K7s, Q2s-Q8s, J3s-J6s, T6s, T3s, 75s, 64s+, 53s, 43s, A2o-ATo, KJo, K6o-K9o, Q8o+, J8o+, T8o+, 97o+, 87o
Always raise 5/7.5bb
88+, A8s+, KTs+, QTs+, JTs, AQo
Mixed
44-77, 22, A2s-A7s, K8s-K9s, Q9s, J7s-J9s, J2s, T7s+, T4s, 93s+, 84s+, 76s, 74s, 54s, AJo, KQo, KTo, K5o, Q6o-Q7o, T7o, 76o, 65o
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.