PokerSolver/Heads-up · 50bb · SB 0.5bb · no rake · chip EV/BB vs SB all-in

BB vs SB all-in

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 50bb · SB opens 3bb, BB 3-bets to 7.5bb, SB goes all-in · Big blind 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.

Big blind's range

864 of 1,326 combos get here

Fold 84.5%Call 15.5%

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

What is the GTO play for the big blind (BB) when SB opens 3bb, BB 3-bets to 7.5bb, SB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV at 50bb?

SB opens 3bb, BB 3-bets to 7.5bb, SB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the big blind (BB) folds 84.5% and calls 15.5%. Always call: 55+, AJs+, AQo+. Mixed: 33-44, A8s-ATs, KTs+, QTs+, J9s+, ATo-AJo.

Always fold: A2s-A7s, K3s-K9s, Q2s-Q9s, J6s-J8s, J2s-J3s, T6s+, 92s-97s, 84s+, 74s+, 62s+, 53s+, 43s, 32s, A2o-A9o, K6o+, QTo+, Q7o-Q8o, Q5o, J8o+, T8o+, 97o+, 86o+
Always call: 55+, AJs+, AQo+
Mixed: 33-44, A8s-ATs, KTs+, QTs+, J9s+, ATo-AJo

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.