Hold'em table

Pocket pair 44 on the button; raise to build the pot and take initiative against two limpers/blinds.

Queen-ten offsuit is playable enough in a three-handed pot against a button open, and calling 250 keeps the hand while staying within a reasonable price out of position.

J4 offsuit is too weak to defend the big blind for 200 more against a 3x raise and a small-blind call, especially out of position to the button postflop.

Queen-high with no pair or draw on a paired jack flop; the preflop raiser has the stronger range, so I check and realize equity cheaply.

Opponent checked a paired board; a half-pot continuation bet can take it down since my underpair has little showdown value otherwise.

Queen-high with no pair and no draw on a paired jack board; calling a flop bet is unprofitable.

K5 offsuit is too weak to open from the button against two live blinds, so folding preserves chips.

6-4 offsuit is a weak, disconnected hand out of position against the big blind after the button folded, so completing is not profitable.

T6 offsuit is too weak and disconnected to invest 100 chips preflop even on the button in a 3-handed game. Folding preserves stack versus likely dominated ten-high ranges.

Heads-up pot with cheap price to see a flop; 6-9 offsuit isn't strong enough to raise, but calling is profitable given the pot odds.

KJs is ahead of a small-blind complete, so I raise to 400 for value and to take the initiative heads-up.

6-9 offsuit facing a raise from the big blind is a weak holding; folding avoids committing more chips with a poor hand.

J3 offsuit is a weak hand on the button facing a raise-free pot; folding preserves chips for better spots.

KQs is strong heads-up versus the big blind after the button folds, so I raise to 3bb for value and initiative.

J6 offsuit is too weak to defend the big blind against a 3x small-blind raise, with poor playability and domination risk despite being in position postflop.

K7 offsuit is dominated and poorly connected; limping invites a raise and an open is not worth building a pot with this hand.

King-Jack offsuit is strong heads-up against the big blind after the button folded. Raising to 300 builds value and denies a free flop.

4-2 offsuit is a trash hand facing a 3x raise from the small blind; folding is clearly correct.

T3 suited on the button has poor playability, cannot make a straight using both cards, and is below a standard button opening or limping range at 100bb, so folding avoids a negative-EV investment.

Cheap price to see a flop heads-up with Q7o; folding costs more equity than calling 50 more.

T4 offsuit is too weak to raise for value against the limping small blind, and checking is free in the big blind.

Qd7s on a 3-9-9 board has no made hand or strong draw; checking keeps the pot small and avoids bloating it out of position with weak equity.

T4 offsuit has no pair and no real draw on a paired flop, so checking for free is better than folding or bluffing into the small blind.

I have a flush draw on the turn after a checked-down flop; betting here applies pressure and gives me equity if called.

I have a diamond flush draw on a paired board and the price is small relative to the pot. With deep stacks the implied odds justify continuing even though raw equity is slightly short of the required pot odds.

I hold two pair (nines and sevens) with a queen kicker, a strong value hand on this paired board; betting roughly half pot extracts value from weaker holdings while not overcommitting against possible trips.

I only have the board pair of nines with a ten kicker, and seat 1 has bet both turn and river. Calling 220 is not justified against a range that mostly beats this weak showdown value.