PokerSolver
PokerSolver/4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/BB vs SB 4-bet 17.25bb

BB vs SB 4-bet 17.25bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb · 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
4-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 25.39bbYour cards?
7.5bb
17.25bb

Tap your two cards.

Big blind's range

1,098 of 1,326 combos get here
Fold 74.3%Call 16.7%All-in 79.84bb 9%
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 7.5bb, SB 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the big blind (BB) folds 74.3%, calls 16.7% and goes all-in 79.84bb 9%. Always call: AA, 55, ATs-AJs, K9s, Q8s, JTs, T8s+, 97s+, 87s, 76s, 65s, 54s, AJo, KQo. Always all-in 79.84bb: JJ-KK, AKs, A6s, A4s, AKo. Mixed: 66-TT, 22-44, AQs, A8s-A9s, A5s, A2s-A3s, KTs+, K6s-K7s, K4s, K2s, Q9s+, Q6s, J8s, T7s, 86s, 75s, 64s, 53s, AQo, KJo.

Always fold
Q3s, J7s, T2s-T6s, 92s-95s, 82s-84s, 72s-74s, 62s-63s, 52s, 42s, A9o-ATo, A6o, A2o-A4o, K8o-KTo, K2o-K6o, Q2o-Q9o, J3o+, T4o+, 95o+, 85o+, 75o, 54o
Always call
AA, 55, ATs-AJs, K9s, Q8s, JTs, T8s+, 97s+, 87s, 76s, 65s, 54s, AJo, KQo
Always all-in 79.84bb
JJ-KK, AKs, A6s, A4s, AKo
Mixed
66-TT, 22-44, AQs, A8s-A9s, A5s, A2s-A3s, KTs+, K6s-K7s, K4s, K2s, Q9s+, Q6s, J8s, T7s, 86s, 75s, 64s, 53s, AQo, KJo
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.

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.