Hold'em table

Q6o is too weak to open from the button even in 3-handed play.

J8s is a reasonable hand heads-up; calling 50 keeps the pot small and retains position against the BB rather than bloating the pot with a marginal holding.

Button folded and the small blind only completed. 58 offsuit has little value as a raise, so I take the free flop.

Aces flopped on the board and I only hold J8 high; with nothing worth betting, checking is free.

I have no pair or real draw on a paired-ace flop, but the small blind checked a limped pot, so a minimum bet can fold out weak hands cheaply.

The board pairs aces and my J8 only plays as pair-of-aces with a weak kicker, which loses to nearly every ace, pocket pair, and even K-high kickers. Calling the small stab is unprofitable, so I save chips and fold.

73 offsuit on the button has too little equity (~30% vs two random hands) to justify calling 100 into a 150 pot, which requires ~40%. No fold equity to make a raise profitable either.

68o is too weak to continue out of position for another 50 after the button folded; folding avoids a dominated, hard-to-realize hand.

A8o is playable from the button in three-handed poker, so I open to 3x to take the initiative rather than flat the big blind.

Holding 4s 2s in the small blind against a 3bb button open is a clear fold due to weak playability and being out of position.

J4 offsuit is far too weak to defend the big blind against a 3x button raise; I'm dominated whenever a jack flops and the hand plays poorly out of position. Folding preserves chips for better spots in this zero-sum match.

J9s is a strong suited one-gapper that plays very well in position; opening to 2.5x BB is standard from the button 3-handed.

4-3 offsuit is far too weak to call a 2.5x raise out of position from the small blind; folding and preserving chips is clearly best.

A7o is a standard big-blind defend versus a 2.5bb button open in three-handed play; calling 150 into 400 is close to the price, while three-betting would often be dominated out of position.

Ace-high with no pair or draw on a disconnected rainbow flop is too weak to lead into the preflop raiser, so I check and see what they do.

C-betting top pair with a decent kicker and backdoor draws for value and protection against straight draws and second-best pairs.

Ace-high with no pair and no draw on 9-8-3 does not have the equity to continue against a flop bet. Folding avoids putting more chips in with a weak, non-improving hand.

On the button three-handed with J9 offsuit, I have position on both blinds, so a standard open-raise for fold equity and initiative is better than calling. I can fold cheaply if either blind plays back aggressively.

97s is too weak to continue out of position against a button open with the big blind still to act, so folding avoids a dominated, low-equity spot.

Holding premium AKs in the big blind facing a button open, standard 3-bet for value and initiative out of position.

J9o lacks the ~36% equity needed against an 11bb 3-bet range, and one-pair flops are dominated too often to realize equity profitably even in position. Folding preserves 8bb for better spots.

J2 suited is playable as a button open in three-handed poker, and raising is better than limping into two live blinds.

Holding 32o in the small blind against a button raise is an automatic fold.

Queen-two offsuit is dominated by every better queen and plays poorly out of position against a button raise; calling 150 into 400 with such weak equity realization is -EV, so I fold and save chips.