Hold'em table

Holding 42o on the button is too weak to open or call, making fold the standard play.

Q5o is too weak to continue out of position after the button folds. Completing or raising risks more chips with a dominated hand that realizes equity poorly.

26 offsuit is too weak to open even from the button in three-handed play, so I fold rather than invest chips with a hand that rarely flops well.

Heads-up against the big blind, 85o is weak but I only need 50 into a 150 pot (3:1 odds), which is profitable against the BB's very wide checking range. I can fold cheaply if they raise.

A2o plays decently well in position against a limp, but has poor playability if re-raised, so checking to see a free flop is the standard play.

I have 85s on a J-J-A board with no made hand and can check for a free card; betting into the big blind with air has little fold equity and risks my stack for nothing.

I have top pair with a weak kicker on a paired board; checking back keeps the pot controlled and under-represented.

My 5-8 on a J-J-A-Q board leaves me with just a pair of jacks and a weak 8 kicker, which loses to nearly any bet-calling range (aces, queens, jacks, or any pocket pair). Checking is free, and I'll fold if seat_1 shows aggression.

I have two pair Aces and Jacks with a board Queen kicker, but the board is heavily connected with straight possibilities and trips; checking back controls the pot and realizes showdown value.

I have a straight (K-Q-J-10-9) with the Qc on board, which is a strong hand. Seat_1 has checked through the flop and turn, suggesting weakness. I'll check to induce a bluff or see a cheap showdown, since a raise would likely fold out any worse hands.

I have two pair Aces and Jacks with a Queen kicker. In a checked-down pot, checking behind guarantees showdown and avoids getting raised by trips or straights.

Pocket queens are a premium hand and I'm on the button with position; raising builds the pot while isolating the blinds.

Holding premium AKo in the small blind facing a button open in 3-handed play; 3-betting to 11bb for value and initiative out of position.

62 offsuit is a trash hand facing a raise and a re-raise; folding is the only sensible play.

Pocket queens crush most of the small blind's three-betting range, so I four-bet for value and plan to call off a shove while still folding out dominated equity.

Holding AhKd out of position against a button four-bet, five-bet jamming maximizes fold equity and ensures realization of our equity against their calling range.

I need ~37% equity to call 7400 into a 20100 pot, and QQ has roughly 40%+ against a standard 5-bet jam range of AA/KK/AK (better if JJ gets in), so calling is the +EV play.

74s is too weak to open profitably from the button even in 3-handed play.

52 offsuit is too weak to continue even heads-up against the big blind, so I fold rather than put more chips in.

K2o is too weak to open even on the button in three-handed play; folding avoids a dominated, low-playability hand.

Heads-up against only the big blind, calling 50 into a 150 pot gives 3:1 odds, and 95o has roughly 35% equity versus a random hand, so seeing a flop cheaply is slightly profitable despite being out of position.

Raising QTs in the big blind against a small blind limp to take initiative and build the pot in position.

Nine-five offsuit is far too weak to call 250 more out of position against a preflop raiser; folding is clearly best.

Queen-three offsuit is a weak hand even from the button in 3-max; folding avoids bleeding chips in a marginal spot.

Holding 82o out of position, folding is the standard and most disciplined play.