PokerSolver
PokerSolver/Heads-up · 50bb · SB 0.5bb · no rake · chip EV/SB open (RFI)

SB open (RFI)

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 50bb · 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 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 1.5bbYour cards?
0.5bb
1bb

Tap your two cards.

Small blind / button's range

1,326 of 1,326 combos get here
Fold 9.1%Call 35.5%Raise 2/2.5/3bb 55.4%All-in 50bb 0%
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 50bb?

First to act in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the small blind / button (SB) folds 9.1%, calls 35.5% and raises 2/2.5/3bb 55.4%. Always call: K2s, J2s, 95s, 93s, 84s, 73s, K2o, T2o-T3o, 94o, 86o, 63o, 53o. Always raise 2/2.5/3bb: 88-TT, 55, A8s-AQs, A3s-A6s, KJs+, K8s, K5s, Q9s, 96s-97s, 87s, 85s, 83s, 76s, 64s+, 54s, 42s+, A9o, KJo+, Q7o, J5o, T4o, 85o. Mixed: JJ+, 66-77, 22-44, AKs, A7s, A2s, K9s-KTs, K6s-K7s, K3s-K4s, QTs+, Q2s-Q8s, J3s+, T2s+, 98s, 94s, 92s, 86s, 82s, 74s-75s, 72s, 62s-63s, 52s-53s, 32s, ATo+, A2o-A8o, K3o-KTo, Q8o+, Q2o-Q6o, J6o+, J2o-J4o, T5o+, 95o+, 93o, 87o, 84o, 74o+, 64o+, 54o, 43o.

Always fold
92o, 82o-83o, 72o-73o, 62o, 52o, 42o, 32o
Always call
K2s, J2s, 95s, 93s, 84s, 73s, K2o, T2o-T3o, 94o, 86o, 63o, 53o
Always raise 2/2.5/3bb
88-TT, 55, A8s-AQs, A3s-A6s, KJs+, K8s, K5s, Q9s, 96s-97s, 87s, 85s, 83s, 76s, 64s+, 54s, 42s+, A9o, KJo+, Q7o, J5o, T4o, 85o
Mixed
JJ+, 66-77, 22-44, AKs, A7s, A2s, K9s-KTs, K6s-K7s, K3s-K4s, QTs+, Q2s-Q8s, J3s+, T2s+, 98s, 94s, 92s, 86s, 82s, 74s-75s, 72s, 62s-63s, 52s-53s, 32s, ATo+, A2o-A8o, K3o-KTo, Q8o+, Q2o-Q6o, J6o+, J2o-J4o, T5o+, 95o+, 93o, 87o, 84o, 74o+, 64o+, 54o, 43o
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.