Hold'em table

3-7 offsuit is too weak to open from the button for a full big blind, so I fold and wait for a better hand.

KQs is a premium hand heads-up against the big blind after the button folds; raising builds the pot for value and applies pressure to the BB's wide defending range.

Defending big blind with JTo in position against a standard small blind open.

K-high on the dry J-5-5 board has almost no showdown value against a BB caller's range, so a half-pot continuation bet applies pressure and can win the 600 pot immediately; I retain fold equity and can give up if raised.

I hold top pair on a paired board in position; calling the half-pot c-bet is standard to keep opponent bluffs in and control the pot.

I hold top pair with a mediocre kicker on a paired board; checking back controls the pot and allows me to see a river in position.

The board has trip fives, so nearly all of seat_3's continuing range (pocket pairs making full houses, Ax, Jx, 5x) beats my KQ, and betting only folds out or chops with the few hands I beat. Checking realizes my showdown equity at no cost.

I have a full house, fives full of jacks. Checking behind captures showdown value against weaker hands without risk, as worse hands rarely call a bet.

On the button 3-handed with a suited connector-ish hand, I have good fold equity and position, so a standard 3x open is better than limping. If called, I retain positional advantage with a hand that flops well.

A5 offsuit plays poorly out of position against a 3bb button open with the big blind left to act, making folding standard.

54 offsuit is too weak to continue against a button open; folding avoids paying 200 more with a dominated, low-equity hand.

Pocket eights on the button is a premium starting hand 3-handed, warranting a standard open raise for value.

T6o is too weak to continue out of position against a button open, with the big blind still to act.

32 offsuit is the worst starting hand and calling 150 more against a button raise leaves me out of position with almost no equity or playability, even though raw pot odds are borderline. Folding is clearly correct.

4-3 suited is too weak to open from the button for a full big blind; folding preserves chips for better spots.

Heads-up against the big blind, A2o is far too strong to fold for only 50 more given the pot odds. Completing keeps the pot small out of position with a weak kicker rather than inflating it with a raise.

I check my option in the big blind with Q7o to see a free flop in position against the limping small blind.

I flopped top pair (aces) on a dry K-3-A board against a passive limped-pot opponent; a small half-pot-plus bet extracts value from K-x and underpairs while folding out hands with little equity, and I can fold cheaply if raised.

I have Queen-high with no draw on an Ace-King high board facing a bet, making this a clear fold.

On the button with 76o and 100bb stacks, a standard 3x open pressures both blinds and lets me play in position; this is a profitable open even with a marginal hand.

Holding 43 offsuit in the small blind facing a button open is an easy standard fold.

95o is too weak to continue against a button raise; it has poor equity and plays badly postflop, so folding is the best option.

Ten-deuce offsuit is far too weak to open, even from the button in a 3-handed game.

Q4o is too weak to continue out of position against the big blind after the button folds.