PokerSolver/Heads-up · 50bb · 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) · 50bb · 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 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 4bbYour cards?

1bb

3bb

Tap your two cards.

Small blind / button's range

1,238 of 1,326 combos get here

Fold 26.7%Call 62.9%Raise 7.5bb 9.7%All-in 50bb 0.8%

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 50bb?

SB limps, BB isolates to 3bb in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the small blind / button (SB) folds 26.7%, calls 62.9%, raises 7.5bb 9.7% and goes all-in 50bb 0.8%. Always call: 22-77, A6s-ATs, A2s-A4s, K9s+, K2s-K7s, Q2s+, J4s+, J2s, T6s+, T4s, T2s, 97s+, 93s-95s, 84s+, 82s, 74s+, 62s+, 52s+, 43s, 32s, A4o-A9o, KTo+, K7o-K8o, Q8o+, J9o+, T9o, 87o, 75o+, 65o, 54o. Always raise 7.5bb: JJ+, AQs+, AQo+. Mixed: 88-TT, J3s, T5s, T3s, 96s, 92s, 83s, 72s-73s, ATo-AJo, A2o-A3o, K9o, K2o-K6o, Q6o-Q7o, Q4o, J7o-J8o, J5o, T7o-T8o, 96o+, 85o-86o, 64o, 53o.

Always fold: Q5o, Q2o-Q3o, J6o, J2o-J4o, T2o-T6o, 93o-95o, 84o, 73o-74o, 63o, 43o
Always call: 22-77, A6s-ATs, A2s-A4s, K9s+, K2s-K7s, Q2s+, J4s+, J2s, T6s+, T4s, T2s, 97s+, 93s-95s, 84s+, 82s, 74s+, 62s+, 52s+, 43s, 32s, A4o-A9o, KTo+, K7o-K8o, Q8o+, J9o+, T9o, 87o, 75o+, 65o, 54o
Always raise 7.5bb: JJ+, AQs+, AQo+
Always all-in 50bb: No hand plays this every time
Mixed: 88-TT, J3s, T5s, T3s, 96s, 92s, 83s, 72s-73s, ATo-AJo, A2o-A3o, K9o, K2o-K6o, Q6o-Q7o, Q4o, J7o-J8o, J5o, T7o-T8o, 96o+, 85o-86o, 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.