PokerSolver/Heads-up · 40bb · 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) · 40bb · 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 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

PlayersBlinds & rakeStacks

Stacks (bb), if they differSBBB

Pot 8.75bbYour cards?

2.5bb

6.25bb

Tap your two cards.

Small blind / button's range

1,238 of 1,326 combos get here

Fold 43%Call 49.1%All-in 40bb 7.9%

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 40bb?

SB opens 2.5bb, BB 3-bets to 6.25bb in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the small blind / button (SB) folds 43%, calls 49.1% and goes all-in 40bb 7.9%. Always call: KK+, 88, 44, 22, A9s-AQs, A7s, A3s-A5s, KQs, KTs, K5s-K8s, K2s-K3s, Q3s+, J5s+, J2s, T6s+, T2s-T3s, 96s+, 86s+, 84s, 74s+, 63s+, 53s+, 43s, A8o-ATo, KQo, K9o-KTo, Q9o+, J8o+, T9o. Always all-in 40bb: TT-JJ, AKo. Mixed: QQ, 99, 55-77, 33, AKs, A8s, A6s, A2s, KJs, K9s, K4s, J4s, T4s, 94s-95s, 83s, 72s-73s, 62s, 42s, 32s, AJo-AQo, A3o-A7o, KJo, K4o-K8o, Q7o-Q8o, T7o-T8o, 98o, 87o, 76o, 65o, 54o.

Always fold: J3s, 92s-93s, 82s, K2o-K3o, Q2o-Q6o, J2o-J7o, T6o, T3o-T4o, 93o-97o, 84o-86o, 74o-75o, 63o-64o, 53o, 43o
Always call: KK+, 88, 44, 22, A9s-AQs, A7s, A3s-A5s, KQs, KTs, K5s-K8s, K2s-K3s, Q3s+, J5s+, J2s, T6s+, T2s-T3s, 96s+, 86s+, 84s, 74s+, 63s+, 53s+, 43s, A8o-ATo, KQo, K9o-KTo, Q9o+, J8o+, T9o
Always all-in 40bb: TT-JJ, AKo
Mixed: QQ, 99, 55-77, 33, AKs, A8s, A6s, A2s, KJs, K9s, K4s, J4s, T4s, 94s-95s, 83s, 72s-73s, 62s, 42s, 32s, AJo-AQo, A3o-A7o, KJo, K4o-K8o, Q7o-Q8o, T7o-T8o, 98o, 87o, 76o, 65o, 54o

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.