PokerSolver/Heads-up · 40bb · 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) · 40bb · SB opens 2.5bb · Big blind 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 3.5bbYour cards?

1bb

2.5bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 31.6%Call 44.9%Raise 6.25bb 14%All-in 40bb 9.5%

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 40bb?

SB opens 2.5bb in Heads-up · SB 0.5bb · no rake · chip EV, 40bb: the big blind (BB) folds 31.6%, calls 44.9%, raises 6.25bb 14% and goes all-in 40bb 9.5%. Always call: A5s-A7s, K9s, K6s, K2s, QTs, Q7s, Q4s, Q2s, J8s, J6s, J3s-J4s, T7s-T8s, T2s-T5s, 93s-97s, 82s-85s, 72s, 62s-64s, 53s, 42s+, 32s, A2o, K5o-K7o, QTo, Q8o, Q6o, J9o, J7o, T7o-T8o, 86o+. Always raise 6.25bb: JJ+, AKs, A9s-ATs, A9o. Always all-in 40bb: 55, ATo-AQo. Mixed: 66-TT, 22-44, AJs-AQs, A8s, A2s-A4s, KTs+, K7s-K8s, K3s-K5s, QJs, Q8s-Q9s, Q5s-Q6s, Q3s, J9s+, J7s, J5s, J2s, T9s, T6s, 98s, 92s, 86s+, 73s+, 65s, 54s, 52s, AKo, A3o-A8o, K8o+, K2o-K4o, QJo, Q9o, Q7o, Q4o-Q5o, JTo, J8o, J4o, T9o, 96o+, 75o+, 65o, 53o+.

Always fold: Q2o-Q3o, J5o-J6o, J2o-J3o, T2o-T6o, 92o-95o, 82o-85o, 72o-74o, 62o-64o, 52o, 42o+, 32o
Always call: A5s-A7s, K9s, K6s, K2s, QTs, Q7s, Q4s, Q2s, J8s, J6s, J3s-J4s, T7s-T8s, T2s-T5s, 93s-97s, 82s-85s, 72s, 62s-64s, 53s, 42s+, 32s, A2o, K5o-K7o, QTo, Q8o, Q6o, J9o, J7o, T7o-T8o, 86o+
Always raise 6.25bb: JJ+, AKs, A9s-ATs, A9o
Always all-in 40bb: 55, ATo-AQo
Mixed: 66-TT, 22-44, AJs-AQs, A8s, A2s-A4s, KTs+, K7s-K8s, K3s-K5s, QJs, Q8s-Q9s, Q5s-Q6s, Q3s, J9s+, J7s, J5s, J2s, T9s, T6s, 98s, 92s, 86s+, 73s+, 65s, 54s, 52s, AKo, A3o-A8o, K8o+, K2o-K4o, QJo, Q9o, Q7o, Q4o-Q5o, JTo, J8o, J4o, T9o, 96o+, 75o+, 65o, 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.