Hold'em table

7-3 offsuit is too weak to open from the button for a full big blind, so folding preserves chips.

72o is the worst hand, and from the small blind I'd be out of position against the big blind; even folding to a single raiser, it's a fold in most solid SB strategies. Folding saves chips.

Three-handed on the button, K4o falls within a standard wide opening range, so I open to 2.5bb to pressure the blinds.

T8 offsuit is too weak to defend profitably from the small blind against a 2.5bb button open, with the big blind still to act. Folding avoids poor equity realization out of position and the risk of a squeeze.

Q8o is too weak to continue out of position against a button open, so folding is the highest-EV option.

J3 offsuit is too weak for a standard button open with two players behind. Folding avoids investing in a hand with poor connectivity and frequent kicker problems.

79 offsuit is too weak to complete out of position against the big blind after the button folds, so I give up the small blind.

85 offsuit is too weak and disconnected to open from the button even three-handed; folding avoids a dominated, hard-to-play hand.

Blind vs blind with K4o, a raise from the small blind is standard; a 3x open puts pressure on the big blind's wide range and avoids playing out of position in a limped pot.

Against a small-blind opening range, 6♣2♣ is a marginal but viable defense at 2-to-1 pot odds. Position and suitedness help realize equity, while the hand is a poor candidate for a three-bet.

K4 with no heart and no diamond on a monotone, connected diamond board has almost no equity, and it is a poor bluffing hand out of position against a caller whose range hits this texture hard. Checking keeps the pot small, and I can give up if they bet.

Bottom pair without a diamond has modest showdown value but little ability to withstand a raise. Checking back keeps the pot small and avoids betting into stronger pairs and diamond draws.

With four diamonds on board and no diamond in my hand, I only have a weak gutshot to a 3 or 8. A bluff is unlikely to fold out the many diamonds BB can hold after a passive line, so I'll check and see a free river.

Our pair has some showdown value, but betting is unlikely to get called by worse on this four-diamond board. With no diamond blocker, checking preserves that value without investing in a weak bluff.

Top pair with no diamond on a four-flush, straight-heavy board can't get value from worse hands and has showdown value, so I check to see a cheap showdown.

My pair has some showdown value against unpaired hands without a diamond. Betting would mostly fold hands I already beat, while I lack a diamond blocker to support a bluff against stronger hands.

Ace-three offsuit is a clear opening hand from the button in a 3-handed game with both blinds still to act, so I'm raising to 2.5bb to steal.

97s is a marginal defense against a 2.5bb button raise from the small blind. With the big blind still to act and poor position postflop, folding avoids a difficult, low-value continuation.

93o is too weak to continue against a button open; calling 150 more has poor equity and no positional advantage.

Pocket jacks are a strong value open on the button three-handed. Raising to 2.5 big blinds builds the pot in position while charging the blinds to continue.

KTo is playable three-handed against a 2.5bb button open, and calling 200 keeps the pot small while retaining position-relative equity if the big blind folds.

J2 offsuit plays poorly multiway out of position, even at roughly 4:1 pot odds, against a button open and a small-blind call. Folding is the standard play here.

I have top pair on a dry-ish K-high flop and am first to act, so a small value bet builds the pot while keeping weaker kings and draws in.

The call needs about 23% equity, and JJ can still beat flush draws and other bluffs in this modest-sized lead. Calling in position keeps those hands in while allowing me to reassess against further pressure.

Top pair with a decent kicker on a three-spade board; a half-pot bet gets value from worse kings and queens and charges flush draws.

Jacks without a spade are a weak bluff-catcher facing a second barrel on a board with two overcards and a completed flush draw. Calling requires roughly 27% equity, which is unlikely against this betting range with little chance to improve.