Hold'em table

AK suited is a premium hand heads-up against the big blind after the button folded, so I raise to 300 to build the pot and take the initiative.

7-3 offsuit is far too weak to defend against a small blind raise. Folding is standard.

T8s is a playable button open in three-handed poker, so I raise to 2.5bb to take the initiative and fold out weak hands.

A3o is too weak to call or 3-bet out of position against a button open.

4-6 offsuit is far too weak to call 150 more against a button raise, and it plays poorly out of position postflop with reverse implied odds.

J7o is below the threshold for a standard open on the button in 3-handed play.

72o is too weak to continue heads-up for another 50; folding avoids playing the worst offsuit hand out of position.

KQs is a strong suited broadway and I am first to act on the button, so a standard 3x open builds the pot and applies pressure.

With deep 100bb stacks, pocket threes have good implied odds to set-mine against a button open.

Queen-six offsuit is far too weak to call 3x off the blinds against two active players; folding is clearly best.

Holding a low underpair with no diamond on a coordinated monotone flop, checking out of position is standard.

Monotone diamond flop and I have no diamond or pair, so a bet is mostly a bluff into a caller who may already have a flush or a diamond. Checking keeps the pot small and preserves showdown value with two overcards.

With a four-flush on board and holding a low pair without a diamond, checking is the natural play.

Four diamonds are already on the board and I have king-high with no diamond, so a bet is a pure bluff into a range that often has a flush or a pair. Checking is free and keeps the pot small.

I have a weak pair with no diamond on a four-flush and four-straight board; checking is standard.

I have king-queen high with no diamond on a four-flush board, so a bet mostly folds out worse and gets called by better. Checking preserves my thin showdown value against air.

Opening standard 2.5x with suited king on the button in 3-handed play.

75 offsuit is far too weak to defend the small blind against a button raise with the big blind still to act; calling would leave me out of position with a dominated, easily counterfeited hand.

Jack-six offsuit is too weak to call a button open after the small blind folds, so I give up the big blind.