PokerSolver/Heads-up · 40bb · SB 0.5bb · no rake · chip EV/SB open (RFI)

SB open (RFI)

Q: What is the GTO play for the small blind / button (SB) when SB is first to act in Heads-up · SB 0.5bb · no rake · chip EV at 40bb?

First to act in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the small blind / button (SB) folds 8.7%, calls 42.1%, raises 2/2.5/3bb 49.1% and goes all-in 40bb 0%. Always call: 22, Q2s-Q3s, J4s, T5s, T2s, 62s, 52s, K4o, J6o, 84o, 63o. Always raise 2/2.5/3bb: 99, A9s-AJs, A3s-A5s, KJs+, K3s, QJs, T8s, 85s, 82s, 65s, AQo, KQo, K7o, J7o, T7o. Mixed: TT+, 33-88, AQs+, A6s-A8s, A2s, K4s-KTs, K2s, Q4s-QTs, J5s+, J2s-J3s, T9s, T6s-T7s, T3s-T4s, 92s+, 86s+, 83s-84s, 72s+, 63s-64s, 53s+, 42s+, 32s, AKo, A2o-AJo, K8o-KJo, K5o-K6o, K2o-K3o, Q2o+, J8o+, J2o-J5o, T8o+, T2o-T6o, 93o+, 85o+, 73o+, 64o+, 52o+, 43o.

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 40bb · First to act · 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 1.5bbYour cards?

0.5bb

1bb

Tap your two cards.

Small blind / button's range

1,326 of 1,326 combos get here

Fold 8.7%Call 42.1%Raise 2/2.5/3bb 49.1%All-in 40bb <0.1%

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 is first to act in Heads-up · SB 0.5bb · no rake · chip EV at 40bb?

First to act in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the small blind / button (SB) folds 8.7%, calls 42.1%, raises 2/2.5/3bb 49.1% and goes all-in 40bb 0%. Always call: 22, Q2s-Q3s, J4s, T5s, T2s, 62s, 52s, K4o, J6o, 84o, 63o. Always raise 2/2.5/3bb: 99, A9s-AJs, A3s-A5s, KJs+, K3s, QJs, T8s, 85s, 82s, 65s, AQo, KQo, K7o, J7o, T7o. Mixed: TT+, 33-88, AQs+, A6s-A8s, A2s, K4s-KTs, K2s, Q4s-QTs, J5s+, J2s-J3s, T9s, T6s-T7s, T3s-T4s, 92s+, 86s+, 83s-84s, 72s+, 63s-64s, 53s+, 42s+, 32s, AKo, A2o-AJo, K8o-KJo, K5o-K6o, K2o-K3o, Q2o+, J8o+, J2o-J5o, T8o+, T2o-T6o, 93o+, 85o+, 73o+, 64o+, 52o+, 43o.

Always fold: 92o, 82o-83o, 72o, 62o, 42o, 32o
Always call: 22, Q2s-Q3s, J4s, T5s, T2s, 62s, 52s, K4o, J6o, 84o, 63o
Always raise 2/2.5/3bb: 99, A9s-AJs, A3s-A5s, KJs+, K3s, QJs, T8s, 85s, 82s, 65s, AQo, KQo, K7o, J7o, T7o
Always all-in 40bb: No hand plays this every time
Mixed: TT+, 33-88, AQs+, A6s-A8s, A2s, K4s-KTs, K2s, Q4s-QTs, J5s+, J2s-J3s, T9s, T6s-T7s, T3s-T4s, 92s+, 86s+, 83s-84s, 72s+, 63s-64s, 53s+, 42s+, 32s, AKo, A2o-AJo, K8o-KJo, K5o-K6o, K2o-K3o, Q2o+, J8o+, J2o-J5o, T8o+, T2o-T6o, 93o+, 85o+, 73o+, 64o+, 52o+, 43o

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.