PokerSolver
PokerSolver/6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs SB 4-bet 20.7bb

BB vs SB 4-bet 20.7bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 200bb · SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb · 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
6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 30.66bbYour cards?
9bb
20.7bb

Tap your two cards.

Big blind's range

816 of 1,326 combos get here
Fold 53.3%Call 24.8%Raise 45.54bb 21.9%All-in 199.84bb <0.1%
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 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 200bb?

SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 200bb: the big blind (BB) folds 53.3%, calls 24.8%, raises 45.54bb 21.9% and goes all-in 199.84bb 0%. Always call: QQ, 88-TT, 22-66, A9s+, A4s-A5s, K9s+, K3s, QTs+, J8s+, T8s+, 97s+, 87s, 76s, 64s+, 54s. Always raise 45.54bb: KK+, A6s, A2s, K4s-K5s, ATo-AJo, A8o, A5o, KTo+, JTo. Mixed: JJ, A3s, K6s, K2s, 85s-86s, 75s, 52s-53s, 43s, AQo+, A4o.

Always fold
T5s-T6s, T2s-T3s, 92s-95s, 83s-84s, 32s, A6o, A2o-A3o, K2o-K6o, Q8o-Q9o, Q3o-Q6o, J7o-J9o, J4o-J5o, T6o-T8o, 98o, 96o, 86o
Always call
QQ, 88-TT, 22-66, A9s+, A4s-A5s, K9s+, K3s, QTs+, J8s+, T8s+, 97s+, 87s, 76s, 64s+, 54s
Always raise 45.54bb
KK+, A6s, A2s, K4s-K5s, ATo-AJo, A8o, A5o, KTo+, JTo
Always all-in 199.84bb
No hand plays this every time
Mixed
JJ, A3s, K6s, K2s, 85s-86s, 75s, 52s-53s, 43s, AQo+, A4o
Settings: 6-max · 200bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 200bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 28.67). 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.