Hold'em table

3c6s offsuit is a very weak button holding; folding avoids entering a multiway pot with poor equity.

Q4o is a very weak hand out of position against the big blind; folding saves chips and avoids postflop trouble with no investment beyond the forced small blind.

67 offsuit is a weak hand, and being first to act preflop with no fold equity from late position makes it unprofitable to enter the pot.

K5o is worth a cheap call heads-up against the big blind; folding loses too much equity for only 50 more.

Check the big blind with a very weak offsuit hand rather than inflate the pot out of position.

K-high with a gutshot-ish backdoor is too weak to value bet; checking keeps the pot small and cheap.

With no made hand or meaningful draw on this coordinated board, checking preserves equity and avoids bluffing into the lone limper unnecessarily.

K-high with no draw on a coordinated board heads-up; checking is free and avoids bloating the pot with a weak hand.

A minimum turn stab can profitably pressure the opponent's repeated checks and folds out unpaired missed hands. My hand has negligible showdown value, so checking gives up too often.

I hold K-high with no draws on a J-high board, and seat_1's turn bet after passive play suggests a made hand. Calling 100 into 300 with king-high has poor equity, so folding is cheapest.

34 offsuit is too weak to defend from the small blind heads-up against the big blind.

T6 suited is too weak to profitably open consistently from the button in this shallow blind structure, especially with no ante.

Folding because T3o is a very weak hand out of position against the big blind, and calling or raising would likely lose chips in the long run without specific reads.

Qd3d is playable on the button in a 3-handed game; a min-raise to 2bb pressures the blinds while risking the minimum.

J2 offsuit is too weak to defend against the button raise without favorable implied odds.

KQs is a strong 3-handed hand on the button; a standard raise builds the pot with position and folds out weaker holdings.

JsTh is a playable suited connector versus a button min-raise, and calling closes neither action nor overcommits the stack.

My hand is extremely weak (2-5 offsuit) and I am out of position against two opponents. Folding is the optimal play.

I have top pair with a strong kicker on a relatively dry board. A medium continuation lead builds value and denies equity to overcards and straight draws.

KQ has overcard equity and I already invested 300; calling one street keeps pot odds reasonable without committing to a marginal spot.

We have top two pair on a coordinated turn and should value-bet while charging diamond draws and weaker one-pair holdings.

I hold an open-ended straight draw (any A or 9 completes a K-high straight) plus two overcards; calling 1100 into a 2700 pot gives good implied odds without risking more.

Our tens full of jacks is an exceptionally strong hand, with only the remaining ten able to tie. A modest river value bet can be called by Jx and some stubborn bluff-catchers while avoiding an unnecessarily polarizing shove.

Board gives me trip tens with KQ kicker, which beats most of villain's value range; raising for value while keeping worse trips/draws in.

We hold tens full of jacks, an extremely strong hand, but the river min-raise can credibly be pocket jacks for the only higher full house. Calling captures value from worse boats while avoiding turning our hand into a shove that better hands call and weaker hands may fold.