Hold'em table

On the button in 3-max with a suited connector, a small open-raise applies pressure to both blinds and builds a pot in position; 45s plays well postflop and can take it down with continuation bets.

K2o is far too weak to defend out of position against a 3x button open with the big blind still to act behind us.

J8s is a reasonable big-blind defend against a button open in three-handed play, and calling 200 into 450 keeps the pot small enough to realize suited equity out of position.

Jd8d has no pair, no flush draw, and no real straight draw on a paired 9-9-3 flop. Checking is free and avoids betting air out of position into the preflop raiser.

My 45hh only makes the worst possible pair of nines here and loses to nearly every continuing hand, so betting is a thin bluff with poor equity when called. Checking back keeps the pot small, gives me a free card to hit a 5/4 or backdoor draw, and preserves tiny showdown value against missed A-high.

Jack-high with no pair or draw on a paired board has little fold equity or showdown value, so checking the turn is the lowest-variance line.

The 5d turn gives me two pair (nines and fives) with 4h5h, and seat_3 has checked twice showing weakness. I bet around 60% pot for value against one-pair/A-high hands and to charge any draws.

Jack-high with no pair and no draw on a paired board; calling 400 into 1050 is not justified against a turn bet.

A9s is a very strong hand on the button in 3-handed play; raising to 2.5bb for value and initiative.

T2o is too weak to continue out of position against a button open; folding saves chips.

J9s is marginal out of position against a 2.5x raise; folding avoids playing a weak hand with positional disadvantage.

J9o is playable in position three-handed; a small button open takes the initiative and can win the blinds outright.

Q5 offsuit is far too weak to defend the small blind against a 2.5bb button raise, especially out of position with the big blind still in. Folding is clearly the best EV play.

64 offsuit is too weak to defend from the big blind against an open raise.

K8o on the button 3-handed is a standard open-raise spot; I have position on both blinds and can win the pot pre or post with a c-bet. Raising to 3bb applies pressure without risking much.

Four-deuce suited is far too weak to defend out of position against a 3bb button open with the big blind left to act.

Pocket threes have enough equity and set-mining value against a button open to call 200 more rather than fold or bloat the pot out of position.

Underpair on a dry queen-high flop has some showdown value but little fold equity if I lead. Checking controls the pot and lets me respond to the preflop raiser's action.

The Q94 flop is very dry and favors my preflop raising range, so a small continuation bet puts pressure on the big blind's check-call range. If called I can reassess or give up cheaply.

Pocket threes are an underpair with no draw on Q-9-4, and I am out of position against a continuation bet. Calling would leave me dominated by any pair and poorly placed to realize equity, so folding is the lower-variance choice.

Opening K7s on the button in 3-handed play is standard for value and position.

A8s is strong enough to 3-bet from the small blind against a small button open, taking the initiative and denying the big blind a cheap call out of position.

QJo offsuit is dominated by typical raise/3-bet ranges (AQ, KQ, QQ+, AK), and calling 650 into a raise-war multiway needs ~38% equity I don't have. Folding is clearly best.

K7s is near the bottom of my opening range and does not have enough equity or playability to justify calling a 3-bet even with position.

A7o is a standard button open in three-handed play; a small raise takes the initiative and can fold out worse hands.

A6s has solid equity and playability heads-up against a button open, getting attractive pot odds to defend the big blind.

Check to the preflop raiser on a broadway-heavy flop where we hold ace-high out of position.

Ace-high has some showdown value on KJ3 and little fold equity if called or raised, so checking back is better than turning this into a bluff.

We hold Ace-high with no draws on a coordinated board. Checking allows us to see the river for free and retain our showdown value against weaker unpaired holdings.

Ace-high with no pair or draw has little value on this board, and seat 2 has checked twice. Checking keeps the pot small and takes a free river rather than bluffing into a possible trap.

We have Ace-high with showdown value after the hand checked through both flop and turn. Checking allows us to potentially win at showdown without risking chips to a bluff.

I have a weak pair of sevens with showdown value on a checked-down board. Betting gets called mostly by better pairs and folds out worse, so checking is best.