PokerSolver
PokerSolver/5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs BTN open 2.5bb

SB vs BTN open 2.5bb

5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN opens 2.5bb · Small blind to act

5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 4.8bbYour cards?
0.5bb
1bb
2.5bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here
Fold 78.7%Call 5.5%Raise 5/7.5bb 15.8%
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 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?

BTN opens 2.5bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 78.7%, calls 5.5% and raises 5/7.5bb 15.8%. Always raise 5/7.5bb: AA, JJ, 99, 66-77, 44, A9s+, A7s, A3s-A5s, KTs+, QTs+, JTs, T9s, KQo. Mixed: QQ-KK, TT, 88, 55, 22-33, A8s, A6s, A2s, K6s-K9s, Q8s-Q9s, J9s, T8s, 97s+, 87s, 76s, 65s, A9o+, KJo, QJo, JTo.

Always fold
K2s-K5s, Q2s-Q7s, J2s-J8s, T2s-T7s, 92s-96s, 82s-86s, 72s-75s, 62s-64s, 52s+, 42s+, 32s, A2o-A8o, K2o-KTo, Q2o-QTo, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
No hand plays this every time
Always raise 5/7.5bb
AA, JJ, 99, 66-77, 44, A9s+, A7s, A3s-A5s, KTs+, QTs+, JTs, T9s, KQo
Mixed
QQ-KK, TT, 88, 55, 22-33, A8s, A6s, A2s, K6s-K9s, Q8s-Q9s, J9s, T8s, 97s+, 87s, 76s, 65s, A9o+, KJo, QJo, JTo
Settings: 5-max · 250bb · 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, 250bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.98). 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.