Hold'em table

A3o is a standard button open in 3-handed play; I have position on both blinds and an ace blocker, so I'll raise to 2.5x and play the hand aggressively postflop.

A9o is too weak to call or 3-bet from the small blind out of position against a button open, with the big blind still to act. Folding avoids a dominated ace in a poor spot.

65 offsuit is too weak to defend out of position against a button raise.

T3o is too weak to open from the button even three-handed; folding avoids a dominated, low-equity spot.

A7s is a premium hand in a blind-versus-blind scenario; raising to 3bb puts maximum pressure on the big blind and builds the pot with strong equity.

Open-raising to 2.5bb with pocket Queens on the button for value.

42s is one of the weakest hands in hold'em, and I'd be calling 200 more out of position against a button raise with the big blind still to act behind me. Folding is clearly the best play despite the sunk small blind.

84 offsuit is too weak to continue out of position against a button open, so folding is the highest-EV option.

Nine-five offsuit is too weak to open even from the button three-handed, and calling 100 into 150 needs far more equity than this hand has against two blinds. Folding preserves chips for a better spot.

Button folded, so this is blind versus blind and T6o has enough equity to complete for 50 more. I stay out of a bloated pot out of position with a weak offsuit hand.

With a low pocket pair in the big blind facing an SB limp, checking allows us to see a free flop with good set-mining value in position.

Ten-high with no pair or draw on A-Q-8 has little showdown value or equity, so checking is the default rather than betting air into the big blind.

I have an underpair with minimal equity on an ace-high board, making a free check the best play.

I have ten-high with no pair, draw, or showdown value on an ace-high board. With no bet to face, checking is the only sensible line.

With bottom pair value effectively zero on this high-card heavy board and negligible drawing equity, checking behind to see a free river is standard.

My T6 does not improve the paired board, so I only chop against equally weak hands. Betting folds out only chops and gets called by the many hands that beat me, so I check.

The board has a pair of eights with Ace, Queen, and Jack kickers, meaning our pocket threes do not even play. Checking allows us to see showdown without risking additional chips against a wide range that easily beats the board.

96o is too weak and poorly connected to open from the button even three-handed, and folding costs nothing since I have no chips invested.

Holding 63 offsuit in the small blind against the big blind is well below any reasonable continuing range, so folding is the straightforward play.

Open-raising with pocket sixes on the button to 2.5bb for value and position in 3-handed play.

Nine-two offsuit is far too weak to call a 2.5x raise out of position against the button, with the big blind still to act behind me. Folding preserves chips for better spots.

J5o is too weak to defend the big blind against a button open to 2.5bb; calling or raising would be -EV.