Hold'em table

Q6o on the button 3-handed is a marginal open; against unknown blinds, folding is a simple, low-variance choice, though a small open is also defensible.

J8o has enough equity against a random big blind to justify completing for half a big blind with good pot odds, and calling keeps the pot manageable out of position.

Check the big blind with a marginal offsuit hand and realize equity cheaply against the small blind limp.

I have no made hand on a paired ace board, and the big blind checked to me, so checking keeps the pot small and lets me see the turn for free.

With no pair or meaningful draw on this paired ace board, checking keeps the pot small and preserves our chance to improve or bluff later.

I have two pair (Aces and Jacks) on a paired board, and the opponent checked the flop, so I likely have the best hand. I'll bet for value to extract chips from weaker hands.

With only an eight-high flush draw, the turn bet offers insufficient direct pot odds, and a paired ace board makes implied odds poor.

7-3 offsuit is a weak hand with no invested chips and facing the big blind's bet, so folding is the lowest-risk play.

Defend the small blind heads-up with suited 86 at a very favorable price; it has reasonable equity and playability.

A4o is well ahead of a small-blind limping range, so a raise to 4bb for value and initiative is better than checking; it also denies the limper a cheap flop.

8-6 offsuit is too weak to defend out of position against a 4bb isolation raise, especially with the button already folded.

A8 offsuit is a strong enough button opening hand in three-handed play. Raising builds initiative and can win the blinds immediately.

42s from the small blind facing a button open, with the big blind still to act, is a clear fold. Calling out of position with such a weak hand loses money.

J4o is too weak to continue against a raise out of position, so folding preserves chips.

J9 suited on the button in 3-handed play is a clear open. A standard 2.5bb raise works well here.

4-3 offsuit is a very weak hand out of position against a preflop raise, and calling 200 more offers poor implied odds. Folding preserves chips for better spots.

A7 offsuit has sufficient equity to defend the big blind against this button min-raise-plus sizing. Calling preserves value while avoiding unnecessary variance out of position.

With ace-high and a gutshot to a ten, checking preserves pot control and lets the preflop raiser reveal their flop strategy.

Top pair with a decent kicker and a gutshot on a dry board; bet about half pot for value and protection against the big blind's checking range.

Ace-high with only a weak gutshot on this coordinated board is not strong enough to continue against the continuation bet.

J9o is strong enough to open from the button, and raising puts pressure on the blinds while taking initiative with position.

Defend the small blind with suited 9-7 against the button's small open; it has adequate playability and pot odds in this three-handed spot.

AKs is a premium hand in the BB facing a button open and an SB flat, so a squeeze to about 11.5bb builds the pot and can take it down now. It also avoids playing a multiway pot out of position.

J9o is too weak to continue against a 3-bet squeeze from the big blind, especially with the small blind still to act. Folding preserves chips for better spots.

9d7d is not strong enough to continue against a large squeeze after an open and call, especially out of position.

J2 suited is too weak to enter from the button at these stack depths; folding avoids dominated postflop spots.

32o is the worst hand, and playing it out of position against the big blind loses money even at a discounted price, so folding is standard.