PokerSolver/Heads-up · 50bb · SB 0.5bb · no rake · chip EV/BB vs SB open 3bb

BB vs SB open 3bb

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 50bb · SB opens 3bb · 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 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.

Big blind's range

1,326 of 1,326 combos get here

Fold 41.4%Call 38.1%Raise 7.5bb 14.6%All-in 50bb 5.9%

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 3bb in Heads-up · SB 0.5bb · no rake · chip EV at 50bb?

SB opens 3bb in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the big blind (BB) folds 41.4%, calls 38.1%, raises 7.5bb 14.6% and goes all-in 50bb 5.9%. Always call: A7s, A5s, A3s, KJs, K9s, K5s-K6s, K2s-K3s, QTs, Q2s-Q6s, JTs, J2s-J7s, T4s-T7s, 98s, 95s-96s, 85s, 73s-74s, 65s, 62s, 54s, 52s, A4o, K9o, Q8o-QTo, J9o+. Always raise 7.5bb: TT+, AKs, ATs-AJs, A9o-ATo. Always all-in 50bb: 66. Mixed: 77-99, 22-55, AQs, A8s-A9s, A6s, A4s, A2s, KQs, KTs, K7s-K8s, K4s, QJs, Q7s-Q9s, J8s-J9s, T8s+, T2s-T3s, 97s, 92s-94s, 86s+, 84s, 82s, 75s+, 63s-64s, 53s, 42s+, AJo+, A5o-A8o, A2o-A3o, KTo+, K5o-K8o, K2o, QJo, Q7o, J7o-J8o, T7o+, 97o+, 86o+, 76o, 65o.

Always fold: 83s, 72s, 32s, K3o-K4o, Q2o-Q6o, J2o-J6o, T2o-T6o, 92o-96o, 82o-85o, 72o-75o, 62o-64o, 52o+, 42o+, 32o
Always call: A7s, A5s, A3s, KJs, K9s, K5s-K6s, K2s-K3s, QTs, Q2s-Q6s, JTs, J2s-J7s, T4s-T7s, 98s, 95s-96s, 85s, 73s-74s, 65s, 62s, 54s, 52s, A4o, K9o, Q8o-QTo, J9o+
Always raise 7.5bb: TT+, AKs, ATs-AJs, A9o-ATo
Always all-in 50bb: 66
Mixed: 77-99, 22-55, AQs, A8s-A9s, A6s, A4s, A2s, KQs, KTs, K7s-K8s, K4s, QJs, Q7s-Q9s, J8s-J9s, T8s+, T2s-T3s, 97s, 92s-94s, 86s+, 84s, 82s, 75s+, 63s-64s, 53s, 42s+, AJo+, A5o-A8o, A2o-A3o, KTo+, K5o-K8o, K2o, QJo, Q7o, J7o-J8o, T7o+, 97o+, 86o+, 76o, 65o

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.