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 2.5bb, BB 3-bets to 6.25bb, 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 56.25bbYour cards?

6.25bb

50bb

Tap your two cards.

Big blind's range

980 of 1,326 combos get here

Fold 86.1%Call 13.9%

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 2.5bb, BB 3-bets to 6.25bb, SB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV at 50bb?

SB opens 2.5bb, BB 3-bets to 6.25bb, SB goes all-in in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the big blind (BB) folds 86.1% and calls 13.9%. Always call: 77+, 44, AJs+, AJo+. Mixed: 55-66, 33, A8s-ATs, KTs+, Q9s+, JTs, T9s, ATo.

Always fold: A2s-A7s, K2s-K9s, Q4s-Q7s, Q2s, J2s-J9s, T6s-T8s, T4s, T2s, 95s+, 93s, 83s+, 74s+, 62s+, 52s+, 43s, 32s, A2o-A9o, K4o+, Q8o+, Q5o-Q6o, Q2o, J8o+, J4o-J5o, T7o+, 96o+, 86o+, 76o, 65o, 54o
Always call: 77+, 44, AJs+, AJo+
Mixed: 55-66, 33, A8s-ATs, KTs+, Q9s+, JTs, T9s, ATo

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.