PokerSolver
PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BB vs BTN 3-bet 4bb

BB vs BTN 3-bet 4bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · BTN limps, BB isolates to 2bb, BTN 3-bets to 4bb · 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
Tournament
6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 7.46bbYour cards?
2bb
4bb
0.5bb

Tap your two cards.

Big blind's range

456 of 1,326 combos get here
Fold 27.2%Call 37.8%All-in 19.84bb 35.1%
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, BB isolates to 2bb, BTN 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

BTN limps, BB isolates to 2bb, BTN 3-bets to 4bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the big blind (BB) folds 27.2%, calls 37.8% and goes all-in 19.84bb 35.1%. Always call: A4s. Always all-in 19.84bb: 88, 44, A9s, AJo-AQo. Mixed: 55, AQs+, A7s-A8s, A5s, A2s, K9s+, K5s-K6s, QTs+, Q7s-Q8s, Q5s, J7s+, T7s+, 76s, 65s, 54s, A8o-A9o, KQo, K9o, QTo+, JTo.

Always fold
86s
Always call
A4s
Always all-in 19.84bb
88, 44, A9s, AJo-AQo
Mixed
55, AQs+, A7s-A8s, A5s, A2s, K9s+, K5s-K6s, QTs+, Q7s-Q8s, Q5s, J7s+, T7s+, 76s, 65s, 54s, A8o-A9o, KQo, K9o, QTo+, JTo
Settings: 6-max · 20bb · 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, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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.