Hold'em table

K8o is a standard button open in three-handed play; a 2.5bb raise takes the initiative and can win the blinds or continue on favorable flops.

T5s is too weak to defend out of position from the small blind against a button raise.

A5 offsuit is a reasonable big-blind defend against a small button open. Calling preserves weaker hands and avoids inflating the pot with a marginal hand.

I have only ace-high with no immediate draw, so checking keeps the pot small and preserves the option to continue if checked back.

King-high has some showdown value and no real draw, so betting mostly folds out worse and gets called by better. Checking behind in position keeps the pot small and realizes equity.

With ace-high on a paired board, checking preserves showdown value and avoids building a pot against hands that are likely to call a bet. I can reassess on the river.

King-high with no pair or draw on a paired queen board has little value as a bluff and some showdown equity, so I check behind after the opponent checks.

With ace-high on a checked-through river, I have some showdown value and little reason to turn it into a bluff.

King-high has no pair and little showdown value, but the opponent checked every street so a free showdown can still win against weaker missed hands. Betting only risks a call from any pair or queen.

Opening from the button with A7s, which is well ahead of standard 3-handed opening ranges.

8♣2♣ is too weak to defend out of position against a button raise, especially with the big blind still to act.

3-5 offsuit is too weak to continue against a button raise, especially out of position. Folding avoids putting more chips in with a dominated hand.

Q5 offsuit is a weak holding, and calling from the button invites the blinds to realize equity without enough upside.

Button folded, so this is heads-up versus the big blind with ace-deuce suited. A small raise takes the initiative and builds the pot with a hand that has decent equity and playability.

75o is too weak to defend against a 3bb open from the small blind.

T2 offsuit is too weak to open from the button in three-handed play; folding avoids a dominated, low-playability hand.

74s is too weak to profitably complete or open-raise out of position blind vs blind.

Opening KQo from the button for a standard 2.5bb raise.

K8 offsuit has reasonable equity against a button open in a three-handed game, and the price is acceptable. I’ll call rather than inflate the pot out of position with a marginal hand.

Q2 suited is too weak to continue out of position against a raise and a call; folding avoids a dominated, low-equity spot.

K-high has little showdown value on this ace-high flop, and the button raiser has a range advantage. I’ll check rather than lead and keep the pot small.

Dry ace-high board heavily favors the preflop raiser's range; firing a one-third pot continuation bet to put pressure on caller's marginal holdings.

The small bet offers favorable pot odds, and K-high retains some equity from improving to a pair against the button’s wide continuation-betting range. I’ll call once and reassess on the turn.

I have no pair or meaningful draw on the turn, so betting is unlikely to fold out better hands. I’ll check and avoid putting more chips in without improvement.

We have King-high with no draw on an Ace-high board after villain called our flop c-bet. Checking back controls the pot and allows us to evaluate the river.

I have only king-high, but it can win at showdown against missed overcards. The river also completes some straight draws, so a bluff is unlikely to fold enough made hands to justify risking chips.

Opponent called a flop bet on an Ace-high board and almost all of their flop continuing range connected with a pair or straight by the river, making a bluff unlikely to succeed.

K6 suited is a profitable button open in a three-handed game. Raise to 2.5 big blinds to apply pressure to the blinds while retaining postflop playability.

A4o from the small blind is too weak to call a button raise out of position, and a reraise would be a bluff with poor playability if called.

Holding 32o out of position against a button open is an easy fold.