Hold'em table

I have a strong pocket pair (QQ) on the button and want to build the pot while applying pressure to the blinds. A 300 total raise is a standard opening size that balances value and bluff frequency.

J7s is a marginal suited hand out of position, and calling 250 into a multiway pot with the big blind still to act is not profitable enough. Folding avoids unnecessary risk early with shallow effective stacks.

A3o is marginal but getting good pot odds heads-up against a button raise, so calling is a reasonable defense from the big blind. Folding would be too weak, and raising with this hand is unnecessary out of position.

I have only ace-high with a gutshot wheel draw, so I check to see a free card and keep the pot small.

I have a strong hand with a pair of Queens and a flush draw on the flop, but the opponent has already checked, so checking back allows me to control the pot size and potentially induce a bluff or see a free card.

I have top set with Qc? no, Qh Qd on 4c Jc 2s Kh. It's a strong hand but I'll check to control pot size and induce bluffs, since opponent may have missed. Checking also keeps my range balanced.

I hold a pair of Queens with a board pairing on the river, giving me a decent but vulnerable hand. Since the opponent checked, I will check behind to realize my equity without risking more chips on a bluff.

9-6 offsuit is a weak, easily dominated hand from the button in a 3-handed pot, and calling 100 to see a flop with poor playability is not worth it. Folding preserves chips for better spots.

I have 3c Ts, a weak hand with no pair and poor playability. The small blind has already folded, so I'm heads-up against the big blind; calling 50 to see a flop with this hand is not profitable.

7h6d is a weak suited-connector hand with no pair and no flush potential; facing a 100bb big blind and a 50bb small blind, the pot odds and implied odds don't justify continuing preflop from the button.

Getting 3:1 pot odds with J4o against a single opponent; calling is cheap to see a flop and preserves chips for better spots.

With a weak offsuit hand out of position, checking is the best way to see a flop for free and keep the pot small.

With J4o on a 2-7-9 flop and no made hand, checking controls the pot and avoids building a pot out of position with minimal equity.

I have an open-ended straight draw with 8c5d on a 2s7c9h board, and checking gives me a free card to realize my draw. There is no need to risk chips when I can see the turn for free.

Our 8-high has little showdown value, so a small bluff can take the pot if the opponent missed. Betting 100 into 200 only needs to succeed about a third of the time.

J-high has no showdown value on this paired board; the river bet likely represents value, and calling 100 with 3:1 odds is not enough when I beat only busted draws.

Three-handed on the button, Q8o is strong enough to open-raise and apply pressure on the blinds rather than limp or fold.

JJ is strong versus the button opening raise, so I raise for value and to put pressure on the big blind.

Ad3h is a weak hand that doesn't play well out of position. Facing a 700 to call after two raises, the pot odds and reverse implied odds don't justify continuing.

Q8o is too weak to continue against a small-blind 3-bet, even with position and decent pot odds; folding avoids playing a dominated offsuit hand.

5-7 offsuit is too weak to continue against the big blind's option, and calling with poor equity is not profitable. Folding preserves my stack for better spots.

4d 8h is a weak hand, and I am out of position with only two players remaining. Folding avoids investing more chips into a marginal spot.