Hold'em table

ATo is a clear open from the button in three-handed play; a 3bb raise builds the pot and takes the initiative rather than flatting the big blind.

5c 3h is a very weak unsuited hand out of position facing a button open, making this an easy fold.

K6 offsuit is weak against a 3x raise from the button; folding is cheapest and avoids a tough OOP spot.

87s is a prime suited connector to open from the button in 3-handed play. Raising to 2.5bb applies pressure and builds a pot in position.

32o is nearly the worst starting hand and I'm facing a 2.5bb raise out of position with the big blind still to act. Calling lacks the equity and playability to be profitable, so folding is clearly best.

AQo is ahead of a button open and plays better as a 3-bet out of position than as a flat. Raising to 900 applies pressure and defines the pot before the flop.

With 87s on the button getting decent pot odds and position, calling the 3-bet allows us to realize equity and leverage deep implied odds.

I have top pair with a strong kicker on a dry ace-high flop and want to bet for value against a wide continuing range. An 800 chip bet is a bit under half pot and keeps weaker aces and king-high hands in.

I completely missed the flop with only eight-high and no direct draw against the preflop 3-bettor's c-bet on an Ace-King high board.

K2o is far too weak to open from the button even 3-handed; it lacks the fold equity to make a steal profitable and plays badly when called. Folding preserves chips for better spots.

Pocket fours is ahead of a random big-blind range heads-up, so I raise to 300 to build the pot and take the initiative rather than just complete.

Q2o is too weak to defend against a 3bb open from the small blind.

Three-handed on the button, 35s is playable enough to open. A small 2.5bb raise keeps the pot controlled while taking the initiative.

Holding premium AKo in the small blind facing a button open, raising to 10bb for value and to seize initiative out of position.

A5s is too weak to continue against a 4x 3-bet out of position, especially with the original opener still to act. Calling lacks pot odds with a dominated kicker, and 4-betting commits too many chips with a hand that's crushed when called.

35 suited is too weak to continue against a 10bb 3-bet; folding avoids putting more chips in with a dominated, low-equity hand.

K4o is too weak to open profitably from the button even three-handed. Folding is standard.

9-3 offsuit is one of the worst hands even from the button in 3-handed play; a min-raise needs ~57% fold equity and gets played back or called too often, leaving me dominated postflop. Folding and saving the 100 chips is the highest-EV line.

Button folded, so this is heads-up versus the big blind with suited KJs. A raise to 300 builds the pot with a strong hand and applies pressure.

K6o is just below the threshold for defending against a full 3x small blind raise, even in position.