PokerSolver
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 2.5bb, 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
Stacks (bb), if they differ
Pot 42.5bbYour cards?
2.5bb
40bb

Tap your two cards.

Small blind / button's range

1,238 of 1,326 combos get here
Fold 86.7%Call 13.3%
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 2.5bb, BB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV at 40bb?

SB opens 2.5bb, BB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the small blind / button (SB) folds 86.7% and calls 13.3%. Always call: 44+, A8s+, KJs+, ATo+. Mixed: 33, A7s, K9s-KTs, QTs+, JTs.

Always fold
22, A2s-A6s, K2s-K8s, Q3s-Q9s, J2s-J9s, T6s+, T2s-T4s, 92s+, 86s+, 82s-84s, 72s+, 62s+, 53s+, 42s+, 32s, A3o-A9o, K2o+, Q2o+, J2o+, T6o+, T3o-T4o, 93o+, 84o+, 74o+, 63o+, 53o+, 43o
Always call
44+, A8s+, KJs+, ATo+
Mixed
33, A7s, K9s-KTs, QTs+, JTs
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.