PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN iso raise 2.5bb

BB vs BTN iso raise 2.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO limps, BTN 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
Tournament
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.8bbYour cards?
1bb
1bb
2.5bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 69.7%Call 25%Raise 5/7.5bb 5.3%
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 in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO limps, BTN isolates to 2.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 69.7%, calls 25% and raises 5/7.5bb 5.3%. Always call: QQ-KK, A3s-A4s, K7s-K8s, K2s, Q8s, T8s, 98s, 95s, 87s, 75s+, 65s, AKo, A9o-AJo, QJo. Always raise 5/7.5bb: ATs-AJs. Mixed: AA, 22-JJ, AQs+, A5s-A9s, A2s, K9s+, K3s-K6s, Q9s+, Q5s-Q7s, Q3s, J7s+, J4s, T9s, T6s-T7s, 96s-97s, 85s-86s, 74s, 63s-64s, 53s+, 43s, AQo, A8o, A4o-A5o, KTo+, QTo, JTo, T9o, 65o.

Always fold
Q4s, Q2s, J5s-J6s, J2s-J3s, T2s-T5s, 92s-94s, 82s-84s, 72s-73s, 62s, 52s, 42s, 32s, A6o-A7o, A2o-A3o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o-T8o, 92o+, 82o+, 72o+, 62o-64o, 52o+, 42o+, 32o
Always call
QQ-KK, A3s-A4s, K7s-K8s, K2s, Q8s, T8s, 98s, 95s, 87s, 75s+, 65s, AKo, A9o-AJo, QJo
Always raise 5/7.5bb
ATs-AJs
Mixed
AA, 22-JJ, AQs+, A5s-A9s, A2s, K9s+, K3s-K6s, Q9s+, Q5s-Q7s, Q3s, J7s+, J4s, T9s, T6s-T7s, 96s-97s, 85s-86s, 74s, 63s-64s, 53s+, 43s, AQo, A8o, A4o-A5o, KTo+, QTo, JTo, T9o, 65o
Settings: 5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 250bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.