PokerSolver
PokerSolver/6-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN iso raise 2.5bb

BB vs BTN iso raise 2.5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · CO limps, BTN isolates to 2.5bb · Big blind to act

6-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.96bbYour cards?
1bb
1bb
2.5bb
0.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 65.8%Call 25.2%Raise 5/7.5bb 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 in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 150bb?

CO limps, BTN isolates to 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 150bb: the big blind (BB) folds 65.8%, calls 25.2% and raises 5/7.5bb 9%. Always call: 77, 22-44, A6s, A3s, K9s, K6s-K7s, K2s-K3s, Q6s-Q7s, Q4s, 96s+, 87s, 74s-75s, 64s, 53s, A9o-AJo, KQo, KTo, QTo+, JTo. Always raise 5/7.5bb: KK+, AQs+, QJs, J9s+, AKo. Mixed: 88-QQ, 55-66, A7s-AJs, A4s-A5s, A2s, KTs+, K8s, K4s-K5s, Q8s-QTs, Q5s, J7s-J8s, J5s, T6s+, 95s, 85s-86s, 76s, 65s, 63s, 54s, 52s, 43s, AQo, A8o, A5o, KJo, 76o, 65o, 54o.

Always fold
Q2s-Q3s, J6s, J2s-J4s, T2s-T5s, 92s-94s, 82s-84s, 72s-73s, 62s, 42s, 32s, A6o-A7o, A2o-A4o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o+, 92o+, 82o+, 72o-75o, 62o-64o, 52o-53o, 42o+, 32o
Always call
77, 22-44, A6s, A3s, K9s, K6s-K7s, K2s-K3s, Q6s-Q7s, Q4s, 96s+, 87s, 74s-75s, 64s, 53s, A9o-AJo, KQo, KTo, QTo+, JTo
Always raise 5/7.5bb
KK+, AQs+, QJs, J9s+, AKo
Mixed
88-QQ, 55-66, A7s-AJs, A4s-A5s, A2s, KTs+, K8s, K4s-K5s, Q8s-QTs, Q5s, J7s-J8s, J5s, T6s+, 95s, 85s-86s, 76s, 65s, 63s, 54s, 52s, 43s, AQo, A8o, A5o, KJo, 76o, 65o, 54o
Settings: 6-max · 150bb · 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, 150bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.4). 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.