Hold'em table

Opening from the button with suited king (K3s), which plays well in position 3-handed.

J5 offsuit is far too weak to call a raise from the small blind, especially out of position with the big blind still to act. Folding preserves the 150 chips for much better spots.

J6s is too weak and dominated to continue out of position against a button open, even with decent pot odds. Folding avoids a difficult postflop spot.

J2o offsuit is too weak to open even three-handed from the button: top pair is frequently dominated and the hand has poor postflop playability. Folding preserves chips for better spots.

Heads-up against the big blind, 43 suited is too playable to fold for half a blind, and calling keeps the pot small with a speculative suited hand.

I have a weak suited hand in the big blind and the small blind limped; checking gives me a free look at the flop.

I have no pair, draw, or showdown value on Th-6s-7c, and checking is free. There is no need to turn a weak hand into a bluff out of position.

I have a gutshot straight draw with 5-high and checking behind in position allows me to see a free turn card.

I have no pair, draw, or board connection on the turn, so checking is the highest-EV line with nothing invested beyond the blind.

We picked up a flush draw on the turn in position; checking behind takes a free river card.

I have complete air on a paired river and no showdown value, but checking is free while a bluff into a tiny pot risks more chips than it can win.

We are playing the board with zero showdown value, but the board is scary with four to a straight; a three-quarter pot bluff can fold out unpaired high cards and weak pairs.

I only play the board pair of sixes with T-8-7 kickers, so nearly any hand beats me. Calling 150 is unprofitable against that range.

67 offsuit is too weak to open from the button into two live blinds; folding avoids a dominated, low-equity spot.

Pocket nines is a strong hand blind vs blind; raising to 300 builds the pot and exerts pressure on the big blind.

Queen-seven offsuit is far too weak to defend the big blind against a 3x raise when out of position heads-up; calling 200 into a small pot with a hand that flops poorly has negative expectation.

Opening standard 2.5bb on the button with KJo.

Ace-ten offsuit has solid equity against a button min-ish raise; flatting in position-disadvantaged spot avoids bloating the pot while keeping the BB's uncertainty in play.

Q5 offsuit is too weak to continue facing a button raise and a small-blind call, so folding is the best option.

I flopped middle pair (tens) with the best kicker on a wet Q-T-9 two-club board, so betting about half pot charges flush and straight draws while extracting from worse tens, nines, and ace-high hands that continue.

Flopped the nut straight on a wet board; raising the donk-bet to build the pot and charge flush and straight draws.

Ten-deuce offsuit is one of the worst starting hands in hold'em, and opening the button with it 3-handed just builds pots with no equity or playability. Folding is clearly the highest-EV line.

T4o is too weak to continue out of position against the big blind after the button folds, so I give up the small blind rather than call or bluff-raise.

K2o is too weak to open from the button in a three-handed pot; folding avoids a dominated, poorly playable hand.

A6o is comfortably ahead of a random hand in a blind-versus-blind spot; raising to 300 chips applies pressure and takes initiative.

K6 offsuit is dominated by the small blind's raising range and realizes poor equity out of position; calling 200 more for a marginal spot isn't worth it, so I fold and preserve chips.