PokerSolver
PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN all-in

SB vs BTN all-in

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · BTN opens 3bb, SB 3-bets to 6bb, BTN goes all-in · Small blind to act

6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 27.8bbYour cards?
6bb
1bb
19.84bb

Tap your two cards.

Small blind's range

260 of 1,326 combos get here
Fold 25.9%Call 74.1%
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 3bb, SB 3-bets to 6bb, BTN goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

BTN opens 3bb, SB 3-bets to 6bb, BTN goes all-in in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the small blind (SB) folds 25.9% and calls 74.1%. Always call: KK+, JJ, 88, 22-55, AJs+, A8s-A9s, A4s, KQs, K9s-KTs, Q9s+, J9s, T9s, ATo-AJo, KJo, QJo. Mixed: A6s-A7s, A9o.

Always fold
A5o-A8o
Always call
KK+, JJ, 88, 22-55, AJs+, A8s-A9s, A4s, KQs, K9s-KTs, Q9s+, J9s, T9s, ATo-AJo, KJo, QJo
Mixed
A6s-A7s, A9o
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.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: 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.