SB vs BTN open 3bb
6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · BTN opens 3bb · Small blind to act
6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 5.46bbYour cards?
0.5bb
1bb
3bb
Tap your two cards.
Small blind's range
1,326 of 1,326 combos get hereFold 82.2%Call 0.8%Raise 6/9bb 17%
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 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?
BTN opens 3bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the small blind (SB) folds 82.2%, calls 0.8% and raises 6/9bb 17%. Always raise 6/9bb: 66+, ATs+, A2s-A7s, KQs, A9o+, KJo+, QJo. Mixed: 55, A8s-A9s, K9s-KJs, Q9s+, J9s+, QTo.
- Always fold
- 22-44, K2s-K8s, Q2s-Q8s, J2s-J8s, T2s+, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A2o-A8o, K2o-KTo, Q2o-Q9o, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
- Always call
- No hand plays this every time
- Always raise 6/9bb
- 66+, ATs+, A2s-A7s, KQs, A9o+, KJo+, QJo
- Mixed
- 55, A8s-A9s, K9s-KJs, Q9s+, J9s+, 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.