Hold'em table

On the button in a 3-handed game, 75o is a cheap steal attempt: a min-raise to 200 risks little, can pick up the 150-chip pot, and gives me position if called. I'll abandon the hand quickly against resistance.

Holding premium suited connectors AKs in the small blind facing a button min-raise, 3-betting to 900 builds the pot with a significant equity advantage.

7-3 offsuit is far too weak to continue against a button open and a small-blind three-bet to 900. Folding preserves the stack for better spots.

7s5d is far too weak to continue against a small-blind 3-bet; calling 700 needs roughly 37% equity, which this hand doesn't have against a 3-betting range. Folding and preserving the 100bb stack for a better spot is clearly best.

On the button in 3-handed play, Ten-Eight suited is a solid opening hand to attack the blinds with position.

A3o is too weak to continue out of position against a button open, especially with the big blind still to act. Folding avoids a dominated ace and a poor kicker.

64o is far too weak to defend the big blind against a button raise; when we connect we're often outkicked or dominated, and playing OOP with this hand loses more than the 150 call saves. Folding is clearly best.

Jack-seven offsuit is too weak to open from the button in this three-handed spot, and limping leaves the small blind free to squeeze. Folding avoids a dominated, low-equity hand.

97 offsuit is too weak to call into two blinds multiway with no reads, and it flops poorly out of position-free but low-equity spots. Folding is the clean, near-neutral EV line.

72 offsuit is the weakest starting hand in Texas Hold'em, making an easy fold from the small blind.

Opening with Kh Qh on the button with a standard 2.5bb raise to build a pot in position.

Pocket threes have enough implied odds to call a 2.5bb button open in a three-handed pot and try to flop a set.

Q6o is a weak dominated hand out of position against a raise plus a caller; despite ~4:1 pot odds, poor equity realization and reverse implied odds make folding the best play.

I have an underpair with no flush draw on a coordinated flop, out of position against the preflop raiser. Checking is best to control the pot and see what they do.

On a monotone, connected board that heavily favors the caller's range and where we hold no diamond, checking behind allows us to realize equity with overcards and a gutshot.

Four diamonds are out and my pocket threes have no diamond, so a bet is called mostly by flushes and better pairs. Checking keeps the free showdown against non-diamond hands I can still beat.

With no diamond on a four-flush board, checking behind controls the pot and avoids paying off hands that hold any diamond.

Pocket threes is only a weak pair on a four-diamond board, and I am first to act. Checking is free and avoids betting into a range that calls with flushes and better pairs.

With King-high and no diamond on a four-flush board, bluffing is risky as villain likely calls with any diamond or pair, so checking behind avoids further loss.

K8s is a playable button open in three-handed poker, so I raise to 2.5bb rather than limp or fold.

5h7d is a weak offsuit hand facing a 2.5x raise out of position; folding is clearly best.

J6o is too weak to defend out of position against a standard button open.