SB vs BTN open 3bb
5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 250bb · BTN opens 3bb · Small blind to act
5-max · 250bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.3bbYour cards?
0.5bb
1bb
3bb
Tap your two cards.
Small blind's range
1,326 of 1,326 combos get hereFold 82.7%Call 0.5%Raise 6/9bb 16.8%
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 3bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 250bb?
BTN opens 3bb in 5-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 250bb: the small blind (SB) folds 82.7%, calls 0.5% and raises 6/9bb 16.8%. Always raise 6/9bb: 44+, A3s+, K8s+, QTs+, J9s+, T8s+, AJo+, KQo. Mixed: 33, A2s, K7s, Q9s, 98s, 76s, 65s, ATo, KJo, QJo.
- Always fold
- 22, K2s-K6s, Q2s-Q8s, J2s-J8s, T2s-T7s, 92s-97s, 82s+, 72s-75s, 62s-64s, 52s+, 42s+, 32s, A2o-A9o, K2o-KTo, Q2o-QTo, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
- Always call
- No hand plays this every time
- Always raise 6/9bb
- 44+, A3s+, K8s+, QTs+, J9s+, T8s+, AJo+, KQo
- Mixed
- 33, A2s, K7s, Q9s, 98s, 76s, 65s, ATo, KJo, QJo
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.