Hold'em table

On the button in a 3-handed game, K5o is within a standard BTN opening range; I'll raise to 3bb for fold equity and position.

Holding 2s 6d in the small blind facing a 3bb button open is an easy standard fold.

QJs is a strong defend against a button open, and calling offers favorable pot odds while keeping weaker hands in the pot.

With QJ on a K-high flop, I have some showdown value and backdoor straight potential but no strong draw. Check to avoid building a pot out of position.

I flopped top pair with the king and the preflop caller checked; betting ~60% of pot extracts value from weaker kings, draws, and pairs while protecting against flush draws.

Q♦J♦ has no meaningful draw on K♣6♥2♥, and its overcard outs may not be clean. Facing a substantial flop bet, folding is preferable to calling without enough equity.

K3o is too weak of an offsuit king to profitably open from the button 3-handed, making a fold standard.

With only 50 chips to call into a 150-chip pot, T5 offsuit has enough equity to complete the small blind heads-up. Calling keeps the pot small while out of position.

Ace-Jack offsuit is a strong hand heads-up against the small blind's limping range, so I raise for value to build the pot and isolate.

T5 offsuit is weak and out of position against a sizable raise. Calling would be unprofitable without strong postflop prospects.

AKo is a premium hand on the button, so I’m raising for value and to take the initiative while keeping the sizing standard for a three-handed pot.

J2 offsuit is far too weak to call 250 from the small blind against a button raise; I'm dominated whenever I hit top pair and out of position postflop.

Holding 62o out of position against a button raise is an easy fold.

3-4 offsuit is too weak even from the button in a 3-handed game; folding the marginal spot preserves chips for better opportunities.

In a blind-versus-blind confrontation, 54s is a great candidate to open-raise with good playability and implied odds.

A♠Q♠ is a premium hand heads-up against the small blind’s raise, so I’ll 3-bet for value and initiative. A raise to 1,000 gives a strong but manageable size out of position.

54s is a playable hand preflop, but calling a large 3-bet out of position against the big blind's tight range yields negative expected value.

J5o is too weak to open from the button even in 3-handed play. Folding is the standard disciplined play.

K7 offsuit is a reasonable hand to complete from the small blind heads-up, and calling gets a favorable price without inflating the pot with a marginal hand.

Ace-high out of position against a limper; a small raise builds the pot with a live ace and takes initiative while keeping risk low.

K7 offsuit is dominated often and plays poorly out of position against a sizable raise. The price is not enough to justify calling.

7-4 offsuit is too weak to enter from the button, especially with both blinds still able to act.

Heads-up against only the big blind, J9s has solid equity and fold equity; a small raise pressures the BB and can win the pot immediately or build a pot with a playable hand.

Holding 6c 2h offsuit facing an open-raise from the small blind is an easy fold due to extremely poor playability and equity.