PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN open 2.5bb

SB vs BTN open 2.5bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · BTN opens 2.5bb · Small blind to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 4.96bbYour cards?
0.5bb
1bb
2.5bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here
Fold 79.3%Call 2.4%Raise 5/7.5bb 18.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN opens 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

BTN opens 2.5bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the small blind (SB) folds 79.3%, calls 2.4% and raises 5/7.5bb 18.3%. Always call: A8s, KTs. Always raise 5/7.5bb: 66+, ATs+, A6s-A7s, A2s-A4s, KJs+, J9s, A9o+, KJo+, QJo. Mixed: 44-55, A9s, A5s, K9s, K6s, Q9s+, JTs, T9s, A5o-A8o, KTo, QTo.

Always fold
22-33, K7s-K8s, K2s-K5s, Q2s-Q8s, J2s-J8s, T2s-T8s, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A2o-A4o, K2o-K9o, Q2o-Q9o, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
A8s, KTs
Always raise 5/7.5bb
66+, ATs+, A6s-A7s, A2s-A4s, KJs+, J9s, A9o+, KJo+, QJo
Mixed
44-55, A9s, A5s, K9s, K6s, Q9s+, JTs, T9s, A5o-A8o, KTo, QTo
Settings: 6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.