PokerSolver
PokerSolver/4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb/SB vs BTN open 2bb

SB vs BTN open 2bb

4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (blinds 0.5/1bb, ante 0.16bb) · 150bb · BTN opens 2bb · Small blind to act

4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bbChange game
Stacks (bb), if they differ
Pot 4.14bbYour cards?
0.5bb
1bb
2bb

Tap your two cards.

Small blind's range

1,326 of 1,326 combos get here
Fold 72.4%Call 14.3%Raise 4/6bb 13.3%
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 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb at 150bb?

BTN opens 2bb in 4-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb, 150bb: the small blind (SB) folds 72.4%, calls 14.3% and raises 4/6bb 13.3%. Always call: 33, A8o-A9o, KTo-KJo, QTo. Always raise 4/6bb: AA, 99, 66-77, ATs+, A4s, KJs+, QJs, J9s, T9s, KQo. Mixed: TT-KK, 88, 44-55, 22, A5s-A9s, A2s-A3s, K2s-KTs, Q6s-QTs, Q4s, JTs, J7s-J8s, T7s-T8s, 97s+, 86s+, 76s, 65s, 54s, ATo+, QJo, JTo.

Always fold
Q5s, Q2s-Q3s, J2s-J6s, T2s-T6s, 92s-96s, 82s-85s, 72s-75s, 62s-64s, 52s-53s, 42s+, 32s, A2o-A7o, K2o-K9o, Q2o-Q9o, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
33, A8o-A9o, KTo-KJo, QTo
Always raise 4/6bb
AA, 99, 66-77, ATs+, A4s, KJs+, QJs, J9s, T9s, KQo
Mixed
TT-KK, 88, 44-55, 22, A5s-A9s, A2s-A3s, K2s-KTs, Q6s-QTs, Q4s, JTs, J7s-J8s, T7s-T8s, 97s+, 86s+, 76s, 65s, 54s, ATo+, QJo, JTo
Settings: 4-max · 150bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 4.8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 150bb stacks, 5% rake capped at 4.8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.5). 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.