Hold'em No Limit - $0.05/$0.10 - 6 players

UTG: $10.00 (100 bb)
MP: $8.70 (87 bb)
CO: $24.27 (243 bb)
BU: $36.37 (364 bb)
SB (Hero): $11.05 (111 bb)
BB: $12.64 (126 bb)

Pre-Flop: ($0.15) Hero is SB with A 9
3 players fold, BTN raises to $0.25, Hero 3-bets to $1, 1 fold, BTN calls $0.75

Flop: ($2.10) Q 2 K (2 players)
Hero bets $0.68, BTN calls $0.68

Turn: ($3.46) A (2 players)
Hero checks, BTN checks

River: ($3.46) 5 (2 players)
Hero bets $1.11, BTN calls $1.11

No information on the Villain.
Preflop: Would you always 3bet A9s preflop in SB vs BU?
Flop: Do you have a continuation bet here?
Turn: Continue to barrel on the ace?
River: I think check would be better here.

Yes.
The 15% range would be a standard 3bet against a 45% BU opening range.
We can always expand it to 20% if Villain has a fold to 3bet >65%.

If Villain on BU opens 35%, then we can 3bet somewhere between the SBvsBU and SBvsCO range.
It is important to adjust to the opponent's stats.

Sure! This is a great flop for our range.
I would choose between range bet 1/3 or bet 1/2.
1/3 is a good bet when we know Villain doesn't raise a lot on the flop and doesn't widen it much against a small Cbet.
Against an unknown, betting 1/2 the pot with this range is fine I think:

• Top Pair+
• All draw (oesd, gs)
• Nuts bdfd

I got Cbet 62%. Looks ok and with this range, we won't have a problem on the later streets.
If there are statistics that the opponent folds to Cbet>50%, then we can expand this range.

Check is okay. We don't have a value bet w our TPWK.
I would continue to value bet with Two Pair+ and add semi-bluffs draw w/o pair.

I think a check is better too by default.
The villain hasn't enough weaker TP and Kx to make our bet profitable.
I would bet against a calling station something like WTSD>30 WWSD<50 WWSF<42, which is able to call our bet with a third pair.

Im just starting to play a bit of poker after a long time out but previous big winner at NL25 but not sure how much the games have changed so take anything I say with a pinch of salt but against an unknown I'm flatting pre flop and looking to play poker post flop.

Yeah I get we are ahead of his likely range but with no info I have no idea if I am able to 3bet for value with this hand and its too strong in my opinion for me to 3bet and look for a fold and if I do get a call Im building a pot with little info. The BB stats would also play a part of my decision pre flop as well.

This hand would be in my flatting range pre OOP against a lot of regs that fold too much to 3bets in steal positions.

As played I would be betting half pot on the flop and then when the Ace hits I would plan to check/call the turn and likely check/fold the river depending on sizing. As it goes check/check on the turn I would be check/calling the river.

Thank you syless. For your great effort it has helped me!
And also thank you MartL.