Hold'em table

Heads-up versus the big blind, A4o is strong enough to open for value and fold equity rather than limp out of position. A raise to 300 takes the initiative at a standard size.

Calling from the big blind in position with suited connectors getting 2 to 1 pot odds against a small blind open.

I have aces and fours on a dry-ish flop and want to get value from worse pairs and draws. A half-pot bet builds the pot without overplaying against a possible flush draw.

I have J-high with no direct draw or flush draw on an ace-high board facing a c-bet.

Q2o is too weak to call or open from the button in a three-handed pot; folding avoids dominated spots and wasted chips.

Opening with JTo in the small blind after the button folded to apply pressure and take initiative blind vs blind.

AJo dominates their 3x opening range and I have position; a 3-bet builds a pot and applies pressure. Folding is too weak, calling too passive.

JTo is well behind a typical big blind 3-bet range and plays poorly out of position, making this an easy fold.

Q2o is far too weak to open from the button, making an easy fold.

Heads-up after the button folds, TJo has solid equity against the big blind's wide range, so a standard 3x raise builds the pot and applies pressure.

K8s has enough suited-king equity and playability in position against a wide small-blind open, and calling 200 into 400 is the right price rather than folding or bloating the pot with a 3-bet.

As the preflop aggressor on a flop with a club flush draw plus J/T overcards, I have strong semi-bluff equity and fold equity, so I continuation bet around two-thirds pot to build the pot and apply pressure.

King-high with no pair and no flush or straight draw on a dry ace-high flop is too weak to continue against a flop bet. Folding saves chips for a better spot.

On the button with 75o, a small raise leverages fold equity and position; if called, I can play postflop with the advantage of acting last.

J6 offsuit is too weak to continue from the small blind against a button open; folding avoids a dominated, poorly playable hand.

Folding Q5o to a 3bb open from the button as it is too weak out of position.

74s is too weak to open from the button for a full raise, and limping plays poorly multiway, so folding preserves chips.

Holding an ace blind-versus-blind gives good fold equity and blocker value; raising to 3bb puts pressure on the big blind.

4h6d offsuit is far too weak to defend even against a 3x small-blind raise; calling 200 more into a 400 pot with no equity edge just leaks chips. Folding preserves my stack for a better spot.

83o is far too weak to open raise or play from the button, so folding is the straightforward play.

2d4s is the worst-type hand to play out of position heads-up against the big blind; completing risks being raised and dominated for minimal upside, so folding preserves the half big blind.