PokerSolver
PokerSolver/6-max · 20bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/SB vs CO open 3bb

SB vs CO open 3bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 20bb · CO opens 3bb · Small blind to act

6-max · 20bb · 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 here
Fold 83.6%Call <0.1%Raise 6bb 2.1%All-in 19.84bb 14.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when CO opens 3bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 20bb?

CO opens 3bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 20bb: the small blind (SB) folds 83.6%, calls 0%, raises 6bb 2.1% and goes all-in 19.84bb 14.3%. Always raise 6bb: AA. Always all-in 19.84bb: 77-QQ, 22-44, AQs, A8s-ATs, A5s, K9s+, QTs+, JTs, AJo+, KQo. Mixed: KK, 55-66, AKs, AJs, A6s-A7s, A2s, Q9s, J9s, T9s, ATo, A7o-A8o, KJo, QJo.

Always fold
A3s-A4s, K2s-K8s, Q2s-Q8s, J2s-J8s, T2s-T8s, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A9o, A2o-A6o, K2o-KTo, Q2o-QTo, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
No hand plays this every time
Always raise 6bb
AA
Always all-in 19.84bb
77-QQ, 22-44, AQs, A8s-ATs, A5s, K9s+, QTs+, JTs, AJo+, KQo
Mixed
KK, 55-66, AKs, AJs, A6s-A7s, A2s, Q9s, J9s, T9s, ATo, A7o-A8o, KJo, QJo
Settings: 6-max · 20bb · 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, 20bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.9). 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.