PokerSolver/Heads-up · 50bb · 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) · 50bb · SB limps, BB isolates to 3bb, SB 3-bets to 7.5bb, 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 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 · 50bb · SB 0.5bb · no rake · chip EVChange game

PlayersBlinds & rakeStacks

Stacks (bb), if they differSBBB

Pot 57.5bbYour cards?

7.5bb

50bb

Tap your two cards.

Small blind / button's range

846 of 1,326 combos get here

Fold 87.4%Call 12.6%

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 limps, BB isolates to 3bb, SB 3-bets to 7.5bb, BB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV at 50bb?

SB limps, BB isolates to 3bb, SB 3-bets to 7.5bb, BB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the small blind / button (SB) folds 87.4% and calls 12.6%. Always call: 88+, AQs+, AJo+. Mixed: 66.

Always fold: K9s, K2s, Q6s, Q4s, J5s, J2s-J3s, T8s+, T5s-T6s, T3s, 96s-97s, 94s, 92s, 86s, 82s-84s, 72s-73s, 62s, 32s, ATo, A2o-A8o, K7o-K9o, K2o-K5o, QTo, Q6o-Q7o, Q4o, Q2o, J7o+, J3o-J4o, T6o+, 98o, 96o, 74o+, 64o+, 53o+
Always call: 88+, AQs+, AJo+
Mixed: 66

Settings: Heads-up · 50bb · SB 0.5bb · no rake · chip EV (small blind 0.5bb, big blind 1bb, 50bb 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 32.63). 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.