PokerSolver
PokerSolver/Heads-up · 50bb · SB 0.5bb · no rake · chip EV/BB vs SB 3-bet 5bb

BB vs SB 3-bet 5bb

Heads-up · SB 0.5bb · no rake · chip EV (blinds 0.5/1bb, no ante) · 50bb · SB limps, BB isolates to 2bb, SB 3-bets to 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 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 7bbYour cards?
2bb
5bb

Tap your two cards.

Big blind's range

1,118 of 1,326 combos get here
Fold 53.2%Call 39.5%All-in 50bb 7.2%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 2bb, SB 3-bets to 5bb in Heads-up · SB 0.5bb · no rake · chip EV at 50bb?

SB limps, BB isolates to 2bb, SB 3-bets to 5bb in Heads-up · SB 0.5bb · no rake · chip EV, 50bb: the big blind (BB) folds 53.2%, calls 39.5% and goes all-in 50bb 7.2%. Always call: AA, 55, 33, AJs, A7s-A8s, A3s, K9s+, K4s-K6s, QJs, Q7s-Q9s, JTs, J8s, T8s+, 98s, ATo, A6o, KJo+, QTo+, JTo. Always all-in 50bb: TT, AKo. Mixed: JJ-KK, 66-99, 44, 22, AQs+, A9s-ATs, A4s-A6s, K7s-K8s, K2s-K3s, QTs, Q5s-Q6s, Q2s-Q3s, J9s, J4s, J2s, T4s-T7s, 96s-97s, 93s, 84s+, 74s+, 64s+, 52s+, 43s, AJo-AQo, A7o-A9o, A3o-A5o, K6o-KTo, K4o, Q8o-Q9o, T8o, 98o, 87o.

Always fold
Q4s, J6s-J7s, J3s, T2s-T3s, 95s, 92s, 82s-83s, 72s-73s, 62s-63s, 42s, 32s, A2o, K5o, K2o, Q7o, Q5o, J7o-J9o, J4o-J5o, T9o, T7o, T5o, 95o-97o, 85o-86o, 74o+, 63o+, 53o
Always call
AA, 55, 33, AJs, A7s-A8s, A3s, K9s+, K4s-K6s, QJs, Q7s-Q9s, JTs, J8s, T8s+, 98s, ATo, A6o, KJo+, QTo+, JTo
Always all-in 50bb
TT, AKo
Mixed
JJ-KK, 66-99, 44, 22, AQs+, A9s-ATs, A4s-A6s, K7s-K8s, K2s-K3s, QTs, Q5s-Q6s, Q2s-Q3s, J9s, J4s, J2s, T4s-T7s, 96s-97s, 93s, 84s+, 74s+, 64s+, 52s+, 43s, AJo-AQo, A7o-A9o, A3o-A5o, K6o-KTo, K4o, Q8o-Q9o, T8o, 98o, 87o
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.