PokerSolver/Heads-up · 40bb · SB 0.5bb · no rake · chip EV/SB vs BB iso raise 3bb

SB vs BB iso raise 3bb

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 40bb · SB limps, BB isolates to 3bb · 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 4bbYour cards?

1bb

3bb

Tap your two cards.

Small blind / button's range

1,254 of 1,326 combos get here

Fold 30.9%Call 57.8%Raise 7.5bb 10.8%All-in 40bb 0.5%

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 limps, BB isolates to 3bb in Heads-up · SB 0.5bb · no rake · chip EV at 40bb?

SB limps, BB isolates to 3bb in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the small blind / button (SB) folds 30.9%, calls 57.8%, raises 7.5bb 10.8% and goes all-in 40bb 0.5%. Always call: 88, 66, 22-44, A2s-A9s, KQs, K2s-KTs, Q2s+, J3s+, T2s+, 92s+, 85s+, 74s+, 62s-64s, 52s+, 42s+, 32s, A7o-A9o, A4o-A5o, K9o+, K7o, K4o-K5o, Q8o+, J9o+, 98o, 87o, 76o, 54o. Always raise 7.5bb: JJ+, AKs, AKo. Mixed: 99-TT, 77, 55, ATs-AQs, KJs, J2s, 82s-84s, 72s-73s, 65s, ATo-AQo, A6o, A2o-A3o, K8o, K6o, K2o-K3o, Q6o-Q7o, J7o-J8o, T6o+, 96o-97o, 86o, 75o, 64o+, 53o.

Always fold: Q2o-Q5o, J2o-J6o, T2o-T5o, 93o-95o, 83o-85o, 73o-74o, 63o, 52o, 43o
Always call: 88, 66, 22-44, A2s-A9s, KQs, K2s-KTs, Q2s+, J3s+, T2s+, 92s+, 85s+, 74s+, 62s-64s, 52s+, 42s+, 32s, A7o-A9o, A4o-A5o, K9o+, K7o, K4o-K5o, Q8o+, J9o+, 98o, 87o, 76o, 54o
Always raise 7.5bb: JJ+, AKs, AKo
Always all-in 40bb: No hand plays this every time
Mixed: 99-TT, 77, 55, ATs-AQs, KJs, J2s, 82s-84s, 72s-73s, 65s, ATo-AQo, A6o, A2o-A3o, K8o, K6o, K2o-K3o, Q6o-Q7o, J7o-J8o, T6o+, 96o-97o, 86o, 75o, 64o+, 53o

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.