Hold'em table

On the button with ace-high and position in a 3-handed game, I open-raise to apply pressure on the blinds and take the initiative; A3o is near the bottom of my range but playable from the button.

Facing a button open in 3-max, A9o is well ahead of button's wide opening range and plays best as a 3-bet out of the small blind to take initiative and fold out BB.

65 offsuit is too weak to continue against a button open and a small-blind three-bet. Folding avoids putting more chips in with a dominated, low-equity hand.

A3o is far too weak to continue against a 3-bet: my kicker is dominated by any stronger ace and I have roughly 30% equity versus a 3-betting range, well short of the ~34% needed. Folding preserves 900 chips for better spots.

T3o is too weak of a hand to open from the button even in a 3-handed game.

Button folded, so this is heads-up versus the big blind with suited ace-seven. A small raise takes the initiative and builds the pot with a hand that plays well postflop.

The small blind raised into only the big blind after the button folded, so their range is wide. Calling 200 to contest a 400 pot with a suited hand that has flush potential and ~40% equity against a wide range is a defensible defense at these odds.

Out of position as the preflop raiser, I c-bet small with ace-high and a gutshot to take down the pot or see a cheap turn.

Pocket queens is a premium hand on the button, so I open-raise to 3x the big blind to build the pot and take control preflop.

42s is one of the worst starting hands and I'm facing a 3bb button raise out of position with the big blind still in. Calling needs ~36% equity that this hand doesn't have, and raising as a bluff with two players to act behind is too thin, so folding is clearly best.

Holding an unsuited and disconnected 84o facing an open raise from the button, this hand has very low playability out of position and is a standard fold.

Nine-five offsuit is too weak to open even from the button in 3-handed play with no reads on opponents; it has poor playability when called and folding costs nothing with 100bb stacks.

T6o is too weak and disconnected to play out of position against the big blind.

96o is too weak to open raise from the button even in 3-handed play.

63 offsuit is a trash hand with poor equity and no postflop playability out of position, so folding the small blind is the highest-EV option.

Pocket sixes is a clear button open in three-handed play; a 2.5x raise builds the pot and can take it down preflop or play well heads-up.

9-2 offsuit is one of the worst hands; facing a 2.5x raise out of position, folding is clearly correct.

J5o is too weak to defend from the big blind facing a 2.5bb open from the button.