Hold'em table

Suited king on the button in 3-handed play is a standard open; position lets me pressure the blinds and play profitably postflop, with fold equity plus flush potential.

J5 offsuit is too weak to defend out of position against a button raise.

J6s has enough suited equity and pot odds to defend the big blind against a button open after the small blind folds.

I have middle pair with a jack on a ten-high board against the preflop raiser, so checking keeps the pot small and lets me react to their action.

I whiffed the flop with K-high, but the BB's check is frequently weak after flatting preflop. A small c-bet into 650 has good fold equity, with backdoor clubs as a slim backup.

I have bottom pair with a jack and the price is only 300 into 950, so folding is too tight against a wide button c-bet. Raising is not justified with this weak showdown hand, so I call and reassess the turn.

I have trip sixes with a jack kicker on a three-spade board, so I bet for value and to charge flush draws rather than give a free card.

I only have king-high with no draws on a three-spade paired board, and seat_3's turn donk into the preflop raiser strongly suggests a six, a flush, or a draw. Calling or bluff-raising with zero equity just burns chips, so folding is cheapest.

J2o is far too weak to open from the button even in a 3-handed game. Folding is standard.

43s is weak but suited, and completing for 50 into a 150 pot is cheap enough to see a flop heads-up.

I'm in the big blind with 5h2h and the small blind just limped, so I get a free flop with a suited hand rather than folding or inflating the pot with trash.

I have complete air with no pair or draw on T-6-7, so checking is the disciplined play out of position rather than bluffing into the big blind.

I hold 5h2h with no pair or real draw on a T-high board, so betting has no value or fold equity worth pursuing; checking is free and lets me fold cheaply if the small blind fires the turn.

I have only a gutshot with 43 and no pair or flush draw on a paired board, so there is no value in betting. Checking keeps the pot small and realizes my limited equity for free.

I only play the board pair of sixes, so betting the river is a pure bluff with no showdown value. Checking is free and can chop against other air.

My 5h2h plays the board exactly (pair of 6s, T-8-7 kickers), so I can only tie or lose at showdown and no bet can gain value. A bluff would mostly get called by A-high or pair hands that beat the board, so checking is free.

67o is too weak to open even on the button in a three-handed pot; folding avoids a marginal spot with poor playability.

Heads-up with a decent pocket pair in the small blind, I raise to build the pot and apply pressure rather than let the BB see a cheap flop.

Q7o lacks sufficient equity and playability against a 3x open from the small blind, making it an easy fold.

King-Jack suited on the button is a strong 3-handed raising hand; I'll take the initiative with a standard 3x open and apply pressure on both blinds.

In 3-handed play, ATo is strong ahead of the button's wide opening range, making a 3-bet to 10bb ideal for value and taking initiative out of position.

Q5 offsuit is too weak to continue against a button open and a small-blind three-bet to 10bb. Folding avoids putting more chips in with a dominated, unconnected hand.

Ten-deuce offsuit is well outside any reasonable 3-handed button opening range, making this an easy fold.

T4o is too weak to continue out of position after the button folds, and stealing would build a pot I realize poorly. Folding the small blind is the lower-variance way to preserve chips.

K2o is too weak to open even on the button; it plays poorly if called and has little equity versus continuing ranges.

Heads-up after the button folds, A6s has strong equity and fold equity against the big blind; a small raise to 2.5x builds the pot with an ace while keeping risk low.

K6o has adequate equity and positional advantage heads-up against a standard small blind open.

I have top pair on A53 with two diamonds after raising preflop, so a continuation bet charges flush draws and worse aces while taking the initiative out of position.

We completely missed the Ace-high board with King-high and no direct draw, making a fold to the c-bet standard.