Hold'em table

Pocket fours is a decent hand; raising to 3x builds the pot and could win it outright or set up a set-mining opportunity.

QTo is strong enough 3-handed against a wide button open, and calling 250 offers a reasonable price despite being out of position.

J4o is too weak to continue multiway against a button raise and a small-blind call. Folding saves chips.

Out of position with queen-high on a paired jack board, checking preserves pot control and lets the preflop raiser reveal strength before committing chips.

Pocket fours on a J-J-6 board have little value against a call-and-check line; checking keeps the pot small and avoids folding equity needlessly against a check.

With Q-high and an open-ended straight draw after a checked flop, a turn semi-bluff can fold ace-high and small pairs while retaining equity when called.

On the button three-handed, K5o with a king blocker is within a wide opening range and raising applies pressure to the blinds with position postflop.

46 offsuit is too weak to continue against a button open, especially out of position. Folding saves chips for better spots.

T6o is too weak to open first-in from the button in three-handed play; folding avoids a dominated, poorly connected hand.

6-9 offsuit is weak and I'd be out of position heads-up against the big blind, so folding is the standard play.

J3 offsuit is a weak hand facing a raise to 100 from the button in a 3-handed pot; not worth continuing.

KQs is a premium hand heads-up against the big blind after the button folded, so I raise for value and to take initiative.

J6 offsuit is too weak to continue against a raise, even heads-up from the big blind.

K7o is a solid button open in 3-handed play with position and a king blocker; raising applies pressure to the blinds.

KJo is playable from the small blind against a single button raise to 2.5bb, and calling 200 keeps the pot small while realizing equity.

4-2 offsuit is a weak hand facing a raise and a call; folding is correct here.

I have a diamond flush draw plus two overcards heads-up and out of position, so a two-thirds-pot semi-bluff builds the pot and can fold out worse hands.

Middle pair plus king-high flush draw gives many outs and good equity against a 400 bet into 600, and calling in position lets me realize that equity cheaply.

I have top pair with a jack kicker plus a diamond flush draw, so I bet for value and protection rather than give a free river.

Two pair kings and sevens in position is too strong to fold for 900 into 2300, needing only about 28% equity against draws and weaker kings, while raising would only get continued by better two pairs and sets.

I have top pair of kings with showdown value, but the king-queen-ten board means many calling hands beat me and worse hands may fold. Checking keeps the pot manageable and realizes my equity.

Two pair Kings and Sevens has showdown value after opponent's flop and turn bets then river check; betting risks calls only from better straights and higher two pairs while worse pairs likely fold.

T3s is too weak to open even on the button in a three-handed pot; folding avoids a dominated, poorly connected hand.

Heads-up pot with good pot odds to see a flop with Q7o; folding is unnecessary given the cheap price.

T-4 offsuit is weak, but checking in the big blind is free against a limped small blind and lets me see a flop with no extra cost.

No pair, weak kicker on a paired board with no draw; check behind and reassess on later streets.

With only board pair and a ten kicker plus backdoor diamond draw, checking takes a free card and avoids building a pot against a limped range that can call with better kickers or a nine.

I hold the backdoor nut-diamond draw (Qd) plus a decent kicker on a paired 9s board; betting here builds the pot while both opponents have shown weakness by checking twice, giving good semi-bluff value.

I have only a ten-high flush draw with nine outs, about 20% on the river, which is not enough for a 150 call into 350 and may be dominated by a higher diamond draw.