Hold'em table

Pocket aces on the button in a 3-handed pot: raise for value to build the pot, using a standard 3x sizing.

J-6 offsuit is too weak to defend against a 3x button raise, especially out of position with the big blind still to act.

Nine-four offsuit is too weak to defend against a 3bb button raise out of position. Folding avoids investing more with poor equity realization and little postflop potential.

94 offsuit is too weak to open profitably from the button here, even three-handed.

KTs is a strong opening hand blind versus blind. Raising to 3bb builds value and pressures the big blind while compensating for our positional disadvantage.

Q4 suited in the big blind getting 2:1 against a small blind raise to 3bb (heads-up effectively, button folded). Wide steal range, decent equity and good price, so calling is reasonable; a 3-bet with this weak kicker is not needed.}

Middle pair with a strong kicker has showdown value, but this connected, two-club flop favors a cautious approach out of position. Checking keeps the pot manageable and retains weaker hands in the opponent's range.

I have top pair with a decent kicker (Qh with a heart backdoor) and the opponent checked, so I'll bet about 2/3 pot for value and to deny equity to draws. 

Second pair with a strong kicker and backdoor straight and flush possibilities is sufficient to defend against a blind-versus-blind flop bet. Calling keeps weaker hands and bluffs in while avoiding an unnecessary raise against stronger hands.

Top two pair is strong enough to let the flop bettor continue with weaker hands and draws. Checking keeps their bluffs in while avoiding unnecessarily inflating the pot against straights.

I hold top pair (Qh with Qc on board) with a backdoor nut-flush-less hand, and the opponent checked twice showing weakness. A half-pot bet extracts value from worse queens and draws while protecting against overcards like the K that just arrived.

Two pair is strong enough to continue, but this connected board gives the bettor plausible straights, sets, and better two pair. Calling keeps weaker hands and bluffs in while avoiding a raise that could isolate us against stronger hands.

Checking with two pair lets missed club draws bluff and keeps weaker hands in the opponent's betting range. Leading risks isolating us against stronger two pair, sets, and straights after their two barrels.

Opponent checked three streets after calling two bets, so their range is mostly medium pairs and missed draws. A small value bet with second pair can get called by worse hands like Tx and Jx while risking little against Kx.

Two pair is strong enough to call this small river bet, especially with missed club draws in the opponent’s range. Raising risks isolating against straights, sets, and higher two pair while folding out bluffs.

Pocket fours are a standard button open three-handed. Raising to 2.5 big blinds pressures the blinds while preserving positional advantage and set potential if called.

3-5 offsuit is a weak hand, and I'm out of position in the small blind facing a button raise to 250 with the big blind still to act. Calling 200 more is not profitable, so I fold.

A5 suited is strong enough to defend the big blind against a button raise, and calling 150 offers reasonable pot odds while keeping weaker hands in.

I have two pair on a favorable flop and should value-bet against weaker aces while charging draws and pocket pairs. A modest bet keeps worse hands in the pot.}

Pocket fours have little equity against an ace or queen, and the substantial flop lead makes continuing unattractive. With only two outs to improve against most value hands and poor prospects on later streets, folding is best.

A6s on the button in a 3-handed game is a strong enough hand to open for a 3x raise and put pressure on both blinds.

K3 offsuit is a weak hand facing a 3x button open, with the big blind still to act. The call price does not justify defending from the small blind.

K6 offsuit is a weak, frequently dominated hand against a 3-big-blind button raise. Out of position, its poor equity realization makes folding preferable to calling or bluff-raising.

K♥9♥ is a strong button opening hand three-handed; raise to 2.5 big blinds to take the initiative while keeping the sizing standard.

K3 offsuit is too weak to defend from the small blind against a 2.5bb button raise, especially with the big blind still to act. Folding avoids playing a frequently dominated hand out of position.

A7s in the big blind facing a 2.5x button open gets a good price (150 to win 400), and the hand plays well heads-up with position against us. Calling is better than a bloated 3-bet out of position.

Ace-high with a weak kicker on a connected two-tone board. Checking to the preflop raiser keeps the pot small and lets me realize some equity, with a possible call to a small bet later.

I have a modest middle pair with a weak kicker on a board with possible draws. Checking back keeps the pot small and lets me realize my equity.

Ace-high with a backdoor-less gutshot (7 with T-9 gives an 8 for a straight draw). Board is Tc 9d 2c 4s, so I only have a weak draw to a 5-6-7-8 area; checking keeps the pot small, and the button checked back the flop, which signals weakness but not enough to bluff into.}

Bet 200 for thin value and protection with middle pair and a strong kicker against a range that has checked twice. This size keeps weaker pairs and some draws in while limiting the cost if called or raised.

Ace-high with a 7 on a T-9-2-4 board is basically a bluff-catcher. Folding here saves 200 chips for a marginal spot, since the button's turn bet after the flop check-through could easily be value or a semi-bluff.

A9 suited is a strong button opening hand three-handed. Raising to 2.5 big blinds pressures the blinds while retaining positional advantage and strong postflop potential.

K8o is weak out of position in the small blind against a button raise to 250, with the big blind still to act behind me. Calling 200 more would leave me out of position in a three-way pot with a dominated hand, so folding is the better choice.

J5 offsuit is too weak to defend against a button raise, even with the favorable price from the big blind. Its poor playability and dominated-jack risk make folding preferable.