Hold'em table

9-4 offsuit is too weak to open from the button, even three-handed.

7-9 offsuit heads-up against the big blind, getting 3-to-1 pot odds to complete for 50 more. It's a marginal hand, but the price is cheap, so I'll see a flop rather than fold or bloat the pot.

Holding Jh Ts in position against a small blind limp, raising to 3.5bb builds the pot with a strong playable hand and exerts pressure.

7-9 offsuit is weak, and calling 250 more out of position against a raise from the big blind, with a player still to act behind, is not profitable. Folding is the simplest choice.

8c7d is a suited-ish connector-type hand (offsuit) on the button in a 3-handed game; calling 100 to win a 250 pot is priced well and has good playability in position.

J6o has very poor playability and equity realization out of position, making it an easy fold even getting 5 to 1 pot odds.

T7 suited plays well enough to see a free flop, but raising out of position against the limper is unnecessary.

Middle pair is likely ahead of many limped hands, but the monotone flop leaves it vulnerable. A small bet gets value from worse pairs and charges hands with a heart.

I have middle pair (sevens) on a monotone flop with no heart. The bet is small (150 into 400 pot), so calling is priced well and keeps the pot manageable, while raising would risk a lot against a possible flush.

I have a pair of sevens but no heart on a four-heart board. Checking controls the pot against a range that can contain many flushes.

A pair of sevens on a four-heart board is a marginal showdown hand. Betting mostly gets called only by better hands like flushes, so I check back to keep the pot small.

With five hearts on the board, my hand plays the board and can only tie at showdown. A small bet may fold out another hand without a heart while limiting the cost when called by a heart.

Four hearts are on the board and I hold only a pair of sevens with no heart. Any heart or king beats me, and I need about 21% equity to call. A small river bet is more likely value than a bluff, so I fold.

On the button in 3-handed play, J9o is well within a standard opening range. Raising to 200 applies pressure on the blinds with positional advantage.

4-2 offsuit is too weak to defend the small blind against a button raise, especially with the big blind still to act.

A3s in the big blind against a button min-raise is a good hand heads-up. With the small blind folded, a 3-bet to 600 gets value from worse aces and takes the initiative, and I can fold to a large re-raise.

J9o is too weak to continue against a 3-bet from the big blind.

K7 suited is strong enough to open on the button in a three-handed game. A 2.5-big-blind raise gives me a chance to win the blinds while keeping the pot manageable.

5-6 offsuit is weak from the small blind facing a button raise to 250 with a big blind still to act behind. Calling 200 more out of position in a 3-way pot is not profitable, so I fold.

J4 offsuit is too weak to defend out of position against a button open.

9-2 offsuit is one of the weakest starting hands. Folding from the button costs nothing extra, and calling out of position against two players with a hand this weak is a losing play.

Q7o plays poorly out of position postflop, so folding from the small blind is standard against the big blind.

A7o is comfortably in the standard button opening range in 3-handed play; raising to 2.5bb applies pressure and buys position.

9-2 suited is too weak to defend from the small blind against a button raise, especially with the big blind still to act.

6-5 offsuit in the big blind gets a good price: 150 to call into a 400 pot, about 27% equity needed. Facing a button open, calling is reasonable and a 3-bet bluff isn't needed.

I have 6-5 on a 7-K-4 flop, which is a gutshot with backdoor draws and little showdown value. Out of position against the button, who raised preflop and likely has a stronger range, checking is the safe way to see a turn card.

I have second pair with top kicker on a dry king-high board; checking back controls the pot size and realizes equity in position.

I have a straight draw (6-5 on 7-K-4-T is a gutshot needing an 8... actually 4-5-6-7 makes an open-ended draw needing 3 or 8). The button checked the flop, so betting about 64% of the pot gives me fold equity and I still have outs when called.

Calling the turn probe bet in position with third pair and top kicker, as opponent's range contains many bluffs and semi-bluffs after we checked back the flop.

The board is 7d Ks 4c Th Td and I hold 6d 5h, so I have only 7-high with a pair of tens on board. I can't beat any real hand, and a bluff into a opponent who called the turn is unlikely to work, so I check for a free showdown.

I have two pair, Tens and Sevens with an Ace kicker. This has decent showdown value against missed draws that bet the turn, but little value in betting as worse hands won't call.