PokerSolver
PokerSolver/Fast-fold NL200 6-max 20bb/BB vs SB 3-bet 4bb

BB vs SB 3-bet 4bb

Fast-fold NL200 6-max ($1/$2) · 20bb · SB limps, BB isolates to 2bb, SB 3-bets to 4bb · Big blind to act

Fast-fold NL200 · 6-max · 20bbChange game
Stacks (bb), if they differ
Pot 6bbYour cards?
2bb
4bb

Tap your two cards.

Big blind's range

1,138 of 1,326 combos get here
Fold 57.1%Call 24.5%All-in 20bb 18.4%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 2bb, SB 3-bets to 4bb in Fast-fold NL200 6-max at 20bb?

SB limps, BB isolates to 2bb, SB 3-bets to 4bb in Fast-fold NL200 6-max, 20bb: the big blind (BB) folds 57.1%, calls 24.5% and goes all-in 20bb 18.4%. Always call: K8s-K9s, K3s, T3s, KJo+, QTo+. Always all-in 20bb: KK, 99-JJ, 55-66, AQs+, ATs, AKo, AJo. Mixed: AA, QQ, 88, 22-44, AJs, A3s-A9s, KTs+, K7s, K4s-K5s, K2s, Q6s+, Q2s-Q3s, J3s+, T4s+, T2s, 95s-97s, 92s, 87s, 74s+, 64s+, 53s+, 42s, AQo, A3o-ATo, K9o-KTo, Q9o, Q5o, Q3o, J8o+, T9o, 98o.

Always fold
J2s, 98s, 93s-94s, 83s, 72s-73s, 62s-63s, 52s, K4o-K6o, K2o, Q6o-Q7o, Q4o, J7o, J5o, T2o-T8o, 97o, 92o-93o, 87o, 84o, 76o, 72o-74o, 65o, 63o, 52o-53o, 43o
Always call
K8s-K9s, K3s, T3s, KJo+, QTo+
Always all-in 20bb
KK, 99-JJ, 55-66, AQs+, ATs, AKo, AJo
Mixed
AA, QQ, 88, 22-44, AJs, A3s-A9s, KTs+, K7s, K4s-K5s, K2s, Q6s+, Q2s-Q3s, J3s+, T4s+, T2s, 95s-97s, 92s, 87s, 74s+, 64s+, 53s+, 42s, AQo, A3o-ATo, K9o-KTo, Q9o, Q5o, Q3o, J8o+, T9o, 98o
Preset: Fast-fold, NL200 ($1/$2), 6-max, 20bb stacks, 5% rake capped at 3bb. Solver: HoldemResources Calculator (HRC) (HRC CI 24.03). 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.