PokerSolver/Heads-up · 75bb · SB 0.5bb · no rake · chip EV/BB vs SB open 2.5bb

BB vs SB open 2.5bb

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 75bb · SB opens 2.5bb · Big blind to act

Fits exactlyGGPoker Spin & Gold Maxpartypoker SPINS Overdrive 240x+WPT Global Global Spins 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 · 75bb · SB 0.5bb · no rake · chip EVChange game

PlayersBlinds & rakeStacks

Stacks (bb), if they differSBBB

Pot 3.5bbYour cards?

1bb

2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 30.1%Call 48.4%Raise 6.25bb 18.4%All-in 75bb 3.1%

Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 2.5bb in Heads-up · SB 0.5bb · no rake · chip EV at 75bb?

SB opens 2.5bb in Heads-up · SB 0.5bb · no rake · chip EV, 75bb: the big blind (BB) folds 30.1%, calls 48.4%, raises 6.25bb 18.4% and goes all-in 75bb 3.1%. Always call: 22, K9s, K3s, Q2s-Q5s, J6s-J7s, J2s-J3s, T3s-T5s, 92s-94s, 83s-84s, 73s, 62s-63s, 52s, A6o-A7o, A2o-A4o, K3o-K9o, Q4o-QTo, J7o-J9o, T7o-T8o, 97o, 86o+, 76o, 65o, 54o. Always raise 6.25bb: JJ+, 88, AJs+, A9s, KJs+, K7s, QTs+, T9s, T7s, 98s, 87s, KQo. Always all-in 75bb: AKo. Mixed: 99-TT, 33-77, ATs, A2s-A8s, KTs, K8s, K4s-K6s, K2s, Q6s-Q9s, J8s+, J4s-J5s, T8s, T6s, T2s, 95s-97s, 85s-86s, 82s, 74s+, 72s, 64s+, 53s+, 42s+, 32s, A8o-AQo, A5o, KTo-KJo, K2o, QJo, JTo, J6o, T9o, 98o, 75o.

Always fold: Q2o-Q3o, J2o-J5o, T2o-T6o, 92o-96o, 82o-85o, 72o-74o, 62o-64o, 52o-53o, 42o+, 32o
Always call: 22, K9s, K3s, Q2s-Q5s, J6s-J7s, J2s-J3s, T3s-T5s, 92s-94s, 83s-84s, 73s, 62s-63s, 52s, A6o-A7o, A2o-A4o, K3o-K9o, Q4o-QTo, J7o-J9o, T7o-T8o, 97o, 86o+, 76o, 65o, 54o
Always raise 6.25bb: JJ+, 88, AJs+, A9s, KJs+, K7s, QTs+, T9s, T7s, 98s, 87s, KQo
Always all-in 75bb: AKo
Mixed: 99-TT, 33-77, ATs, A2s-A8s, KTs, K8s, K4s-K6s, K2s, Q6s-Q9s, J8s+, J4s-J5s, T8s, T6s, T2s, 95s-97s, 85s-86s, 82s, 74s+, 72s, 64s+, 53s+, 42s+, 32s, A8o-AQo, A5o, KTo-KJo, K2o, QJo, JTo, J6o, T9o, 98o, 75o

Settings: Heads-up · 75bb · SB 0.5bb · no rake · chip EV (small blind 0.5bb, big blind 1bb, 75bb 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 35.88). 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.