PokerSolver
PokerSolver/Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/BB vs SB 4-bet 17.25bb

BB vs SB 4-bet 17.25bb

Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (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
Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bbChange game
Stacks (bb), if they differ
Pot 25.07bbYour cards?
7.5bb
17.25bb

Tap your two cards.

Big blind's range

922 of 1,326 combos get here
Fold 71%Call 17.8%All-in 79.84bb 11.2%
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 7.5bb, SB 4-bets to 17.25bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb at 80bb?

SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in Heads-up · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb, 80bb: the big blind (BB) folds 71%, calls 17.8% and goes all-in 79.84bb 11.2%. Always call: AA, A9s-ATs, K9s, QTs, JTs, 65s, AJo, KQo. Always all-in 79.84bb: TT-KK, AKs, AQo+. Mixed: 22-99, AJs-AQs, A2s-A8s, KTs+, K7s-K8s, K4s-K5s, K2s, QJs, Q8s-Q9s, Q6s, J8s-J9s, J2s, T8s, 97s+, 86s+, 76s, 64s, 53s+, 43s, ATo, KJo, QJo.

Always fold
K6s, K3s, Q7s, Q5s, Q2s-Q3s, J5s-J7s, J3s, T9s, T4s-T7s, T2s, 92s-96s, 82s-85s, 73s-75s, 62s-63s, 52s, 42s, 32s, A3o-A9o, K7o-KTo, K5o, K3o, Q7o-QTo, J7o+, T7o+, 96o+, 86o+, 75o+, 64o+
Always call
AA, A9s-ATs, K9s, QTs, JTs, 65s, AJo, KQo
Always all-in 79.84bb
TT-KK, AKs, AQo+
Mixed
22-99, AJs-AQs, A2s-A8s, KTs+, K7s-K8s, K4s-K5s, K2s, QJs, Q8s-Q9s, Q6s, J8s-J9s, J2s, T8s, 97s+, 86s+, 76s, 64s, 53s+, 43s, ATo, KJo, QJo
Settings: Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 22.38). 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.