Hold'em table

Three-handed on the button, 84s is a playable suited open. A small raise to 2.5bb takes the initiative rather than limping or folding a hand with some postflop playability.

Q9 offsuit is a marginal defend from the small blind, especially with the big blind still to act and poor position postflop. I fold rather than call a sizable raise.

K4o has poor playability out of position against a button raise, making it an easy fold.

T♣7♣ is a playable button-open in a three-handed game. Raise to 2.5 big blinds to take initiative while keeping the size modest.

76 offsuit is too weak to defend out of position against a button raise with the big blind left to act.

46o is too weak to continue out of position against a button open; calling or raising would be a clear mistake.

Holding 42 offsuit on the button is well below any standard opening range in 3-handed play, making fold the clearly profitable decision.

T5o is too weak to continue out of position against the big blind after the button folds, so I fold rather than invest more.

Q9o is playable enough on the button in three-handed poker to open with a small raise and take the initiative in position.

J6 offsuit is too weak to call a button raise from the small blind, especially with the big blind still to act.

73o is a very weak offsuit hand that cannot profitably defend out of position against a button raise.

8-5 offsuit is weak for a button raise, but completing costs only 100 chips into a 150-chip pot and preserves position for the flop.

Holding 8d 4h out of position, folding is the standard and disciplined play even getting decent pot odds.

K3 offsuit is too weak to raise a button limp for value or as a bluff, and there is nothing to call, so checking is the highest-EV option.

King-high with no pair or draw on 8-9-2 has little showdown value and poor bluff equity, so I check and realize the free card.

I have a modest pair with a weak kicker on a board that offers draws, so checking preserves showdown value and avoids inflating the pot. I can reassess on the turn.

King-high with no pair or draw on a connected turn; checking is free and avoids bloating the pot with almost no equity.

I have a weak pair with limited improvement potential and can check behind for a cheap showdown rather than inflate the pot.

Ace-high with a king kicker has real showdown value against a passive limper who checked flop and turn, so there is no need to turn this into a bluff.

My pair of eights is weak on this ace-high board, and a bet is unlikely to get called by many worse hands. I’ll take the free showdown after the checks on earlier streets.

K2o is too weak to open from the button even in 3-handed play.

Button folded, so this is heads-up versus the big blind. Ace-five offsuit is strong enough to raise for value and fold equity rather than only complete.

Q4 offsuit is weak against a 3x raise, and calling out of position would leave me with a difficult postflop spot.