Hold'em table

A3o is playable from the button in three-handed poker, so I open to 2.5bb to take the initiative with position rather than flat-calling.

Ace-nine offsuit has decent equity against a button open, and calling 200 into a 400 pot is cheap. I keep the pot small out of position rather than 3-betting a marginal hand.

Holding 65 offsuit out of position multiway has poor playability and negative expected value despite the pot odds, so a fold is best.

The dry 5-5-4 board misses a wide button raising range, and leading as the preflop caller credibly represents a five, so a ~2/3-pot bluff should win the pot often enough to be profitable with ace-high.

Ace-high with only a weak gutshot is not worth calling a 400 flop lead into a paired board; I am often dominated and lack the equity to continue.

T3o is a weak hand out of position against two players; folding is the standard profitable play.

A7s is well ahead of an average blind-vs-blind range; opening to 3bb for value and initiative.

84s is too weak to continue against a 3x small-blind raise, even in position; folding avoids putting more chips in with a dominated, low-equity hand.

Opening on the button with pocket Queens for value.

42 suited is too weak to continue out of position against a button raise, so folding is the highest-EV option.

8d4d... 84o from the BB against a 2.5x button raise is a weak hand with poor equity; folding saves 150 chips.

Nine-five offsuit is too weak to open even on the button, so folding avoids investing chips with a dominated hand.

Heads-up against only the BB, completing for 50 with ten-high offsuit is a standard cheap defend given good implied odds.

Taking a free flop with pocket threes in position versus the small blind's limp.

I have ten-high with no equity beyond a backdoor broadway draw after limping preflop, so I have no reason to bet into the big blind. Checking keeps the pot small and lets me fold cheaply to aggression.

We hold an underpair on a coordinated Ace-Queen high board. Checking behind allows us to see a free turn with minimal showdown value.

I only have ace-high/pair of aces with T kicker on A-Q-J-8; betting two checked streets with weak showdown value risks isolation by stronger hands. Check and realize equity cheaply.

We have low showdown value with pocket threes on a very coordinated board; checking behind costs nothing and allows us to see the river safely.

My hand is exactly the board (pair of eights, A-Q-J kickers), and my opponent always has at least that same board pair, so a bet has zero fold equity and only gets called by hands that chop or beat me. Checking and realizing my equity at showdown is clearly best.

We hold two pair (eights and threes with an ace kicker), which beats all unpaired high-card holdings that checked down. A bet will only get called by better hands, so checking behind to realize our showdown value is optimal.

Nine-six offsuit is too weak to open the button 3-handed with no reads; calling a raise-heavy spot or raising a dominated hand leaks chips. Folding preserves stack for better spots.

Folding 63o from the small blind as it is too weak to complete or raise.

Pocket sixes on the button in 3-handed play is a standard open for value and position.

92o is too weak to continue against a button open; folding saves chips for better spots.

J5o is far too weak to call 150 more out of position against a button raise; it gets dominated and plays poorly postflop despite the small price.