PokerSolver
PokerSolver/6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB iso raise 2.5bb

BB vs SB iso raise 2.5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO limps, SB isolates to 2.5bb · Big blind to act

6-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.46bbYour cards?
1bb
1bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 77%Call 17%Raise 5/7.5bb 6%
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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO limps, SB isolates to 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 77%, calls 17% and raises 5/7.5bb 6%. Always call: KK, 99, 55, A6s, K8s, 65s, KQo. Always raise 5/7.5bb: AA, A8s, KJs. Mixed: TT-QQ, 66-88, 22-44, A9s+, A7s, A2s-A5s, KQs, K9s-KTs, K2s-K7s, Q9s+, Q5s, J8s+, T7s+, T5s, 98s, 95s-96s, 86s+, 75s+, 63s-64s, 53s+, ATo+, A4o, KTo-KJo, QTo+, JTo, 97o.

Always fold
Q6s-Q8s, Q2s-Q4s, J2s-J7s, T6s, T2s-T4s, 97s, 92s-94s, 82s-85s, 72s-74s, 62s, 52s, 42s+, 32s, A5o-A9o, A2o-A3o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o+, 98o, 92o-96o, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
KK, 99, 55, A6s, K8s, 65s, KQo
Always raise 5/7.5bb
AA, A8s, KJs
Mixed
TT-QQ, 66-88, 22-44, A9s+, A7s, A2s-A5s, KQs, K9s-KTs, K2s-K7s, Q9s+, Q5s, J8s+, T7s+, T5s, 98s, 95s-96s, 86s+, 75s+, 63s-64s, 53s+, ATo+, A4o, KTo-KJo, QTo+, JTo, 97o
Settings: 6-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 29.27). 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.