PokerSolver
PokerSolver/Heads-up · 50bb · SB 0.5bb · no rake · chip EV/SB vs BB 3-bet 6.25bb

SB vs BB 3-bet 6.25bb

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 · 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
Stacks (bb), if they differ
Pot 8.75bbYour cards?
2.5bb
6.25bb

Tap your two cards.

Small blind / button's range

1,254 of 1,326 combos get here
Fold 41.9%Call 52.6%All-in 50bb 5.5%
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 3-bets to 6.25bb in Heads-up · SB 0.5bb · no rake · chip EV at 50bb?

SB opens 2.5bb, BB 3-bets to 6.25bb in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the small blind / button (SB) folds 41.9%, calls 52.6% and goes all-in 50bb 5.5%. Always call: KK+, 22-77, A8s-AQs, A3s-A6s, K9s+, K7s, K5s, K2s-K3s, Q2s+, J3s+, T5s+, T3s, 96s-97s, 85s+, 74s+, 62s+, 52s+, 42s+, 32s, A9o-ATo, A3o-A4o, K8o+, Q8o+, JTo, T9o, 98o, 76o, 65o. Always all-in 50bb: AKo. Mixed: 88-QQ, AKs, A7s, A2s, K6s, K4s, J2s, T4s, T2s, 92s-93s, 82s-84s, 72s-73s, AJo-AQo, A5o-A8o, A2o, K7o, K5o, K3o, J8o-J9o, T7o-T8o, 97o, 87o, 64o, 53o+.

Always fold
94s, K6o, K4o, K2o, Q2o-Q7o, J2o-J7o, T4o-T6o, 94o-96o, 92o, 83o-86o, 74o-75o, 63o, 43o
Always call
KK+, 22-77, A8s-AQs, A3s-A6s, K9s+, K7s, K5s, K2s-K3s, Q2s+, J3s+, T5s+, T3s, 96s-97s, 85s+, 74s+, 62s+, 52s+, 42s+, 32s, A9o-ATo, A3o-A4o, K8o+, Q8o+, JTo, T9o, 98o, 76o, 65o
Always all-in 50bb
AKo
Mixed
88-QQ, AKs, A7s, A2s, K6s, K4s, J2s, T4s, T2s, 92s-93s, 82s-84s, 72s-73s, AJo-AQo, A5o-A8o, A2o, K7o, K5o, K3o, J8o-J9o, T7o-T8o, 97o, 87o, 64o, 53o+
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.