Hold'em table

Opening A3o from the button in 3-handed play is standard to apply pressure and utilize position.

A9 offsuit is strong enough to three-bet a button min-raise, putting pressure on a wide opening range and discouraging the big blind from joining.

65o is too weak to continue against a raise and a 3-bet, especially out of position. Folding avoids putting more chips in with a dominated hand.

A3o lacks sufficient equity and playability to call a 3-bet out of position/against a tight range.

T3 offsuit is too weak to open profitably from the button against two players.

As7s is a strong hand heads-up against a random big blind; raising takes initiative and builds the pot while we have equity.

84s is too weak to defend against a 3x raise from the small blind.

QQ is a premium hand three-handed; raising to 3bb builds the pot and takes initiative while keeping worse hands in.

Folding 42s in the small blind against a 3bb button open.

8-4 offsuit is too weak to defend the big blind against a 3x button raise.

95o is too weak to open even from the button in 3-handed play.

With T6 offsuit in the small blind, completing for 50 chips is reasonable heads-up against the big blind; raising would build a pot with a marginal hand out of position.

Checking with a small pair in the big blind keeps the pot small and lets me see a flop with position; raising risks bloating the pot with a marginal hand against a limper.

With no pair and only a weak backdoor straight possibility, I prefer to check rather than build the pot.

With a weak pair of threes on an ace-high board, checking keeps the pot small and avoids getting raised by stronger hands.

I have an open-ended straight draw. A small turn bet may win the pot now while keeping the cost modest if called.

Pot odds are decent (calling 125 into 325, or 125 to win 575) and I have position; the small turn bet after two checks looks like a draw or weak stab, so I call and reevaluate on the river.

My hand has little value beyond the board pair, but a river bluff is unlikely to fold an ace, an eight, or a diamond flush. Checking avoids risking more chips and may reach a split pot.

Our two pair (8s and 3s) is weak on this board; opponent's river check suggests showdown value against missed draws, but betting would only be called by better hands. Checking is the safe play.

Nine-six offsuit is a weak button hand, and with no reads on the blinds, I prefer not to invest chips preflop.

63o is too weak to continue out of position; folding avoids playing a dominated hand.

Pocket sixes on the button is strong enough to raise for value and initiative in a 3-handed game. A 3x raise pressures the blinds and can take the pot down preflop.

92o is completely unplayable from out of position facing an open raise. Easy fold.

J5 offsuit is too weak to defend out of position against a 3x button raise.