PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB iso raise 2.5bb

BB vs SB iso raise 2.5bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · BTN limps, SB 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
4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 5.14bbYour cards?
1bb
1bb
2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 80.2%Call 9.1%Raise 5/7.5bb 10.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when BTN limps, SB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

BTN limps, SB isolates to 2.5bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 80.2%, calls 9.1% and raises 5/7.5bb 10.7%. Always call: 66, 44, 22, A5s. Always raise 5/7.5bb: KK+, AQs, KTs, AKo. Mixed: 77-QQ, 55, 33, AKs, A6s-AJs, A2s-A4s, KJs+, K4s-K9s, K2s, Q9s+, Q5s-Q7s, Q2s, J7s+, J4s, J2s, T7s+, T4s-T5s, 96s+, 87s, 85s, 83s, 75s+, 64s+, 54s, ATo-AQo, A5o, KJo+.

Always fold
K3s, Q8s, Q3s-Q4s, J5s-J6s, J3s, T6s, T2s-T3s, 92s-95s, 86s, 84s, 82s, 72s-74s, 62s-63s, 52s-53s, 42s+, 32s, A6o-A9o, A2o-A4o, K2o-KTo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
66, 44, 22, A5s
Always raise 5/7.5bb
KK+, AQs, KTs, AKo
Mixed
77-QQ, 55, 33, AKs, A6s-AJs, A2s-A4s, KJs+, K4s-K9s, K2s, Q9s+, Q5s-Q7s, Q2s, J7s+, J4s, J2s, T7s+, T4s-T5s, 96s+, 87s, 85s, 83s, 75s+, 64s+, 54s, ATo-AQo, A5o, KJo+
Settings: 4-max · 150bb · 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, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.