PokerSolver
PokerSolver/5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN all-in

SB vs BTN all-in

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 80bb · BTN limps, SB isolates to 2.5bb, BTN 3-bets to 7.5bb, SB 4-bets to 17.25bb, BTN goes all-in · 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
5-max · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 98.89bbYour cards?
17.25bb
1bb
79.84bb

Tap your two cards.

Small blind's range

324 of 1,326 combos get here
Fold 65.2%Call 34.8%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN limps, SB isolates to 2.5bb, BTN 3-bets to 7.5bb, SB 4-bets to 17.25bb, BTN goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 80bb?

BTN limps, SB isolates to 2.5bb, BTN 3-bets to 7.5bb, SB 4-bets to 17.25bb, BTN goes all-in in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 80bb: the small blind (SB) folds 65.2% and calls 34.8%. Always call: TT+, AKs, QJs, AQo+. Mixed: 66-99, A9s-AQs, A4s-A5s, KJs+, K9s, K5s-K6s, QTs, Q8s, J9s+, 87s, ATo-AJo.

Always fold
A8s, A6s, A3s, KTs, K7s, Q9s, J8s, T7s+, 98s, 96s, 75s+, A9o, KJo+, QJo, JTo
Always call
TT+, AKs, QJs, AQo+
Mixed
66-99, A9s-AQs, A4s-A5s, KJs+, K9s, K5s-K6s, QTs, Q8s, J9s+, 87s, ATo-AJo
Settings: 5-max · 80bb · 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, 80bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.95). 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.