Hold'em table

Suited connector on the button in 3-max is a goodraising hand; a small button open builds pots and applies pressure to blinds.

K2o is far too weak to defend out of position against a 3x open from the button.

J8s is a reasonable big-blind defend against a button open; calling 200 into a 650 pot needs only about 31% equity, which this suited hand should clear.

Jack-high with no pair or draw on a paired flop is too weak to bet into the preflop raiser, so I check and realize equity cheaply.

I have 54h with no draw on a paired board; I hold the preflop raiser's range advantage but little equity. Checking keeps the pot small and cheap, avoiding betting into the BB's likely 9x or overpair.

Jack-high with no pair or draw on a paired board; checking is free and avoids bluffing into the preflop raiser.

The 5d turn gives me two pair (nines and fives) after my preflop raise, and villain's check-check line is heavily capped toward weak pairs or air. Betting ~70% pot extracts value from lower pocket pairs and charges the few gutshot draws.

Jack-high with no pair, no draw, and no showdown value on a paired board; calling 450 is not justified.

A9s is a premium opening hand on the button in 3-handed play, so we open with a standard 2.5x raise.

T2 offsuit has almost no playable equity against a button open, so folding the small blind is the highest-EV option.

J9 offsuit is a weak hand that's often dominated, and I'd be out of position heads-up against the button's 2.5x raise. Folding is the cheapest and safest line.

J9o is playable as a button open in three-handed poker, and a 2.5bb raise takes the initiative while keeping the price reasonable.

Q5 offsuit is one of the weakest hands and is dominated by a button's 2.5x raising range; calling 200 more into a 400 pot with no hand worth playing just burns chips.

Holding 64 offsuit out of position against a button raise is too weak to defend profitably.

Fold 42s from the small blind as it underperforms out of position even blind versus blind.

On the button in a 3-handed game, K7s is well within standard opening range; raising to 2.5bb to build a pot with position.

A8s has enough equity and playability versus a 2.5x button open to continue, and calling 200 into 400 is preferable to bloating the pot out of position with the big blind still to act.

Closing the action with QJo at 4:1 immediate odds (150 into 600) gives enough equity (~28% three-way vs raising ranges) to justify seeing a flop, even out of position. Folding is too tight at this price, and raising a dominated hand three-way is unappealing.

Ace-high with no pair and no club draw on a three-club flop has little showdown value, so I check rather than bet into two opponents. Checking is free and preserves the option to realize equity on later streets.

I have top pair with a weak kicker on a monotone club board, and the preflop raiser still acts behind me. Checking keeps the pot small and avoids building a big pot with a vulnerable hand out of position.

In a three-way pot on a monotone club board without holding any club blockers, checking behind with King-high to see a free turn card is standard.

Ace-high with no club and no pair has little value on a three-flush board, so I take the free turn card rather than bluff into two opponents.

Everyone checked the flop showing weakness, and my pair of queens with a jack is likely ahead; a moderate bet charges flush/gutshot draws and extracts thin value while keeping control.

I only have king-high with a weak gutshot straight draw on a monotone board, with another player left to act behind me.

Ace-high with no pair and no draw on a three-club board is too weak to call a half-pot turn bet. Folding preserves chips against a range that is heavily ahead.

A7o is playable as a button open in three-handed poker; a 2.5bb raise takes the initiative with position rather than limping.

Pocket 4s in the small blind facing a 2.5x raise with a player still behind is a marginal spot; folding avoids playing a small pair out of position with minimal equity edge.

A6s has strong playability and equity against a button open, offering great pot odds to defend from the big blind.

Check to the preflop raiser as the out-of-position defender with ace-high and limited immediate equity on a King-high board.

As the preflop raiser I c-bet small on a checked flop. Ace-high has little showdown value on K-J, so a one-third pot bet takes it down often enough and keeps the price low when called.

I hold only Ace-high with no backdoor draws on a board that heavily hits the preflop raiser's range, making a fold straightforward.