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

SB vs BTN 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 · BTN opens 2.5bb, SB 3-bets to 7.5bb, BTN 4-bets to 17.25bb · Small 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 26.39bbYour cards?
7.5bb
1bb
17.25bb

Tap your two cards.

Small blind's range

400 of 1,326 combos get here
Fold 63%Call 18.4%All-in 79.84bb 18.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN opens 2.5bb, SB 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 80bb?

BTN opens 2.5bb, SB 3-bets to 7.5bb, BTN 4-bets to 17.25bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 80bb: the small blind (SB) folds 63%, calls 18.4% and goes all-in 79.84bb 18.7%. Always call: 88, ATs-AJs, KJs, 76s. Always all-in 79.84bb: JJ-KK, AKs, AKo. Mixed: AA, 99-TT, 55-77, AQs, A2s-A9s, KQs, KTs, QTs+, J9s+, T8s, 87s, 65s, 54s, AJo-AQo, KQo.

Always fold
44, K4s-K9s, Q8s-Q9s, Q5s-Q6s, J6s, T9s, T7s, 96s+, 75s, A9o-ATo, KTo-KJo, QTo+, JTo
Always call
88, ATs-AJs, KJs, 76s
Always all-in 79.84bb
JJ-KK, AKs, AKo
Mixed
AA, 99-TT, 55-77, AQs, A2s-A9s, KQs, KTs, QTs+, J9s+, T8s, 87s, 65s, 54s, AJo-AQo, KQo
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.