PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB iso raise 2bb

BB vs SB iso raise 2bb

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 2bb · Big blind to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 4.64bbYour cards?
1bb
1bb
2bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here
Fold 77.2%Call 9%Raise 4/6bb 13.8%
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 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

BTN limps, SB isolates to 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the big blind (BB) folds 77.2%, calls 9% and raises 4/6bb 13.8%. Always call: 55, 33. Always raise 4/6bb: JJ+, 99, AQo+. Mixed: TT, 66-88, 44, 22, A2s+, K2s+, Q5s+, J7s+, J4s, T6s+, 97s+, 85s+, 74s+, 63s+, 53s+, 42s+, ATo-AJo, KTo+, QJo, JTo, T9o, 98o, 76o.

Always fold
Q2s-Q4s, J5s-J6s, J2s-J3s, T2s-T5s, 92s-96s, 82s-84s, 72s-73s, 62s, 52s, 32s, A2o-A9o, K2o-K9o, Q2o-QTo, J2o-J9o, T2o-T8o, 92o-97o, 82o+, 72o-75o, 62o+, 52o+, 42o+, 32o
Always call
55, 33
Always raise 4/6bb
JJ+, 99, AQo+
Mixed
TT, 66-88, 44, 22, A2s+, K2s+, Q5s+, J7s+, J4s, T6s+, 97s+, 85s+, 74s+, 63s+, 53s+, 42s+, ATo-AJo, KTo+, QJo, JTo, T9o, 98o, 76o
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.

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.