PokerSolver
PokerSolver/Fast-fold NL200 6-max 40bb/BB vs SB 4-bet 11.5bb

BB vs SB 4-bet 11.5bb

Fast-fold NL200 6-max ($1/$2) · 40bb · SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb · Big blind to act

Fast-fold NL200 · 6-max · 40bbChange game
Stacks (bb), if they differ
Pot 16.5bbYour cards?
5bb
11.5bb

Tap your two cards.

Big blind's range

838 of 1,326 combos get here
Fold 72.8%Call 19%All-in 40bb 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 SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb in Fast-fold NL200 6-max at 40bb?

SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb in Fast-fold NL200 6-max, 40bb: the big blind (BB) folds 72.8%, calls 19% and goes all-in 40bb 8.2%. Always call: AA, A9s-ATs, KQs, KTs, K7s, Q9s+, T8s+, 98s, 76s, 65s, AJo. Always all-in 40bb: QQ, 99-TT, AKs, AQo+. Mixed: KK, JJ, 66-88, AJs-AQs, A6s, A4s, KJs, K5s-K6s, Q8s, J8s+, 96s, 87s, 75s, 64s, KJo+.

Always fold
Q2s, J6s, J2s-J4s, T5s-T6s, T3s, 92s-95s, 83s-85s, 52s, 43s, 32s, A9o-ATo, A2o-A7o, K4o-KTo, Q4o-QTo, J7o-J9o, T6o+, 97o+, 86o+, 76o, 65o, 54o
Always call
AA, A9s-ATs, KQs, KTs, K7s, Q9s+, T8s+, 98s, 76s, 65s, AJo
Always all-in 40bb
QQ, 99-TT, AKs, AQo+
Mixed
KK, JJ, 66-88, AJs-AQs, A6s, A4s, KJs, K5s-K6s, Q8s, J8s+, 96s, 87s, 75s, 64s, KJo+
Preset: Fast-fold, NL200 ($1/$2), 6-max, 40bb stacks, 5% rake capped at 3bb. Solver: HoldemResources Calculator (HRC) (HRC CI 24.4). 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.