PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB iso raise 2bb

BB vs SB iso raise 2bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · CO limps, SB isolates to 2bb · 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
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 4.8bbYour cards?
1bb
1bb
2bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 68.4%Call 23.4%Raise 4/6bb 8.2%
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 2bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

CO limps, SB isolates to 2bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the big blind (BB) folds 68.4%, calls 23.4% and raises 4/6bb 8.2%. Always call: KK, 55, K7s, J5s, 98s, AJo, QTo+, JTo, 76o. Mixed: AA, 66-QQ, 22-44, A2s+, K8s+, K2s-K6s, Q6s+, Q4s, Q2s, J6s+, J3s-J4s, T7s+, 95s-97s, 85s+, 82s, 74s+, 65s, 63s, 52s+, 43s, AQo+, A7o-ATo, A4o-A5o, KTo+, J9o, T8o+, 97o, 64o+.

Always fold
Q5s, Q3s, J2s, T2s-T6s, 92s-94s, 83s-84s, 72s-73s, 64s, 62s, 42s, 32s, A6o, A2o-A3o, K2o-K9o, Q2o-Q9o, J2o-J8o, T2o-T7o, 98o, 92o-96o, 82o+, 72o-75o, 62o-63o, 52o+, 42o+, 32o
Always call
KK, 55, K7s, J5s, 98s, AJo, QTo+, JTo, 76o
Always raise 4/6bb
No hand plays this every time
Mixed
AA, 66-QQ, 22-44, A2s+, K8s+, K2s-K6s, Q6s+, Q4s, Q2s, J6s+, J3s-J4s, T7s+, 95s-97s, 85s+, 82s, 74s+, 65s, 63s, 52s+, 43s, AQo+, A7o-ATo, A4o-A5o, KTo+, J9o, T8o+, 97o, 64o+
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.