Hold'em table

K5 offsuit is too weak to open from the button in three-handed play; folding avoids a dominated, poorly connected hand out of position postflop.

Folding Q4o in the small blind as it plays poorly out of position postflop against the big blind.

On the button in 3-handed play, A6o is a standard open for value and position.

58o is too weak to continue against a button open, even for a min-raise. Folding avoids playing a dominated, disconnected hand out of position.

Button folded, so this is heads-up versus the big blind. Queen-nine offsuit is playable enough to raise for initiative rather than just complete.

96 offsuit is too weak to defend against a 3x open from the small blind.

67o is too weak to call 1bb or open-raise from the button with no reads; folding avoids a marginal spot.

Holding an Ace blocker in a blind-versus-blind spot, raising to 300 exerts immediate pressure on the big blind.

Q9o has enough equity against a wide small-blind raising range, and calling 200 into a 400 pot needs only ~33% equity. I also act after the raiser postflop, so I keep position and avoid bloating the pot with a marginal hand.

We hold Ace-high with a backdoor flush draw on a paired board out of position. Checking keeps the pot controlled and lets us realize our equity.

My Q9 makes a weak pair of eights, and the preflop raiser checked the flop, which often signals air or a middling hand. A modest stab in position folds out ace-high hands and charges club draws, and I can easily fold if raised.

Holding just Ace-high with virtually no backdoor potential out of position against a half-pot bet, folding is the standard disciplined play.

Q8o is a standard button open in 3-handed play, especially with zero rake. A min-raise efficiently attacks the blinds.

98 offsuit is dominated by the button's raising range and plays poorly postflop; calling 150 into a 350 pot with reverse implied odds is -EV, so folding is the standard play.

2-6 offsuit is too weak to continue against a button open after the small blind folds. Folding avoids putting more chips in with a dominated, unconnected hand.

K5s is a standard button open 3-handed with fold equity and decent suited playability; raising to 3x applies pressure on the blinds.

T6s is too weak to call a 3bb button open out of position with the big blind still to act. Folding saves chips for better spots.

73s is too weak to defend out of position against a 3bb raise from the button.