PokerSolver
PokerSolver/4-max · 80bb · 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) · 80bb · BTN limps, SB isolates to 2bb · Big blind to act

4-max · 80bb · 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 57.8%Call 27.6%Raise 4/6bb 14.6%
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 80bb?

BTN limps, SB isolates to 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 57.8%, calls 27.6% and raises 4/6bb 14.6%. Always call: 22-66, AJs, A8s-A9s, K9s, K6s-K7s, K4s, K2s, Q9s-QTs, 52s, KJo. Always raise 4/6bb: TT+, AQs+, JTs, AQo+. Mixed: 77-99, ATs, A2s-A7s, KTs+, K8s, K5s, K3s, QJs, Q3s-Q8s, J3s-J9s, T7s+, T3s, 96s+, 84s+, 74s+, 72s, 63s+, 53s+, 42s+, 32s, A2o-AJo, KQo, K9o-KTo, Q9o+, J9o+, T9o, 97o+, 86o+, 64o+, 54o.

Always fold
Q2s, J2s, T4s-T6s, T2s, 92s-95s, 82s-83s, 73s, 62s, K2o-K8o, Q2o-Q8o, J2o-J8o, T2o-T8o, 92o-96o, 82o-85o, 72o+, 62o-63o, 52o-53o, 42o+, 32o
Always call
22-66, AJs, A8s-A9s, K9s, K6s-K7s, K4s, K2s, Q9s-QTs, 52s, KJo
Always raise 4/6bb
TT+, AQs+, JTs, AQo+
Mixed
77-99, ATs, A2s-A7s, KTs+, K8s, K5s, K3s, QJs, Q3s-Q8s, J3s-J9s, T7s+, T3s, 96s+, 84s+, 74s+, 72s, 63s+, 53s+, 42s+, 32s, A2o-AJo, KQo, K9o-KTo, Q9o+, J9o+, T9o, 97o+, 86o+, 64o+, 54o
Settings: 4-max · 80bb · 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, 80bb stacks, 5% rake capped at 4.8bb; 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.

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.