PokerSolver/Heads-up · 40bb · SB 0.5bb · no rake · chip EV/SB vs BB all-in

SB vs BB all-in

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 40bb · SB opens 3bb, BB goes all-in · Small blind / button to act

Fits exactlyGGPoker Spin & Gold x50, x100, Maxpartypoker SPINS Overdrive 10-24.99x, 25-119.99x, 120-239.99x, 240x+WPT Global Global Spins x5, x10, x25, x120, x240, x6,000

Close1 games

ACR Poker SPINZ x2, x3, x4, x5, x10, x25, x50, x100, x12,000its blinds are not published

Cash

Heads-up · 40bb · SB 0.5bb · no rake · chip EVChange game

PlayersBlinds & rakeStacks

Stacks (bb), if they differSBBB

Pot 43bbYour cards?

3bb

40bb

Tap your two cards.

Small blind / button's range

1,210 of 1,326 combos get here

Fold 85.8%Call 14.2%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind / button (SB) when SB opens 3bb, BB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV at 40bb?

SB opens 3bb, BB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the small blind / button (SB) folds 85.8% and calls 14.2%. Always call: 44+, A9s+, KJs+, QTs+, JTs, ATo+. Mixed: A7s-A8s, K9s, J9s, T9s, A9o.

Always fold: 22-33, A2s-A5s, K6s-K8s, K2s-K3s, Q8s-Q9s, Q3s-Q6s, J4s-J8s, J2s, T6s-T7s, T3s-T4s, 92s-97s, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A4o-A8o, A2o, K4o+, K2o, Q2o+, J2o+, T2o+, 93o+, 84o-86o, 74o+, 64o+, 54o, 43o
Always call: 44+, A9s+, KJs+, QTs+, JTs, ATo+
Mixed: A7s-A8s, K9s, J9s, T9s, A9o

Settings: Heads-up · 40bb · SB 0.5bb · no rake · chip EV (small blind 0.5bb, big blind 1bb, 40bb stacks, no rake; chip EV: every chip is worth the same, as it is when only the winner is paid and heads-up). Solver: HoldemResources Calculator (HRC) (HRC CI 32.16). Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Sources for the games it fits: ggpoker.com/poker-games/spin-gold (prize table in its script js/funds29.8816e65c.js; fetched 2026-10-31); chips and blinds from worldpokerdeals.com/blog/spin-gold-the-ultimate-guide-on-ggpoker-network (updated 2026-05-11; its 26-level blind table lists no ante) and somuchpoker.com/news/best-spin-and-go-poker-sites-2026 (updated 2026-10-16), fetched 2026-10-31; partypoker.com/en/poker/offers/dynamic-structure (stacks, prize shares and the 20-level blind table, which lists no ante), fetched 2026-10-31; wptglobal.com/how-to-play/global-spins (stacks and prize shares; fetched 2026-10-31); blinds from worldpokerdeals.com/blog/global-spins-wpt-global (2023-11-23; its blind table lists no ante) and somuchpoker.com/news/best-spin-and-go-poker-sites-2026 (2026-10-16); worldpokerdeals.com/blog/winning-poker-network-new-1-000-000-spin-go (2025-12-05; stacks only), fetched 2026-10-31.