Hold'em table

84o is a weak hand out of position against two players; folding the button open-limp is the standard profitable play.

K2o has poor playability out of position against the big blind, making an open-fold standard.

52o is well outside any reasonable opening range on the button.

Q9 offsuit is a reasonable blind-versus-blind hand, but calling keeps the pot manageable while out of position and avoids building a large pot with a marginal hand.

T8o is too weak to raise a limped pot, and checking lets me see a free flop in position against the small blind's limp.

Bet half-pot for value and protection with top pair; worse Jx and draws may continue, while checking keeps the pot manageable with my modest kicker.

A3 offsuit is a reasonable button open three-handed, and raising applies pressure while taking advantage of position.

A7s out of position against a 3x button open is dominated too often and plays poorly postflop; folding avoids a marginal spot with no positional edge.

J4o is far too weak to defend out of position against a 3x button open.

Eight-two offsuit is one of the weakest hands in the deck; even on the button 3-handed, paying 1 BB to play it out of position against the blinds has poor equity and fold equity. Folding preserves chips for spots with real edge.

Opening from the small blind with K5o against the big blind to exert pressure and steal the blinds.

Q5 offsuit is too weak to continue against a 3×-big-blind raise, even with the favorable pot odds and position postflop.

96 offsuit is too weak to open even on the button in 3-handed play.

J♠7♠ is a playable suited hand heads-up from the small blind, and completing cheaply keeps weaker hands in while preserving the option to improve postflop.

K5s has strong equity heads-up against the small blind's limping range, so I raise to build the pot and take initiative rather than checking back a decent hand.

J7 suited is marginal out of position, but the raise is modest and calling gives me a playable pot against the big blind’s likely isolation range.

I have no pair and only backdoor draws on an ace-high flop, so I’ll take the free card rather than bluff into the preflop raiser.

I raised preflop and the small blind checked the flop, signaling weakness. Betting ~60% pot with a king-high flush draw is a standard semi-bluff that can win the pot outright while building it when I improve.

I have no pair or immediate draw, and the backdoor spade draw is not enough to justify calling this flop bet. The preflop raiser can also credibly have an ace or a stronger made hand.

Q6 suited is a reasonable button open in a three-handed game; raising applies pressure and gives me initiative.

Defending big blind with QTo against a button 2.5bb open getting great pot odds.

I flopped top pair with a decent kicker out of position. Standard play is to check to the preflop aggressor and evaluate their action.

Bet 200 for value and protection with top pair; this charges draws while keeping the pot manageable with a weak kicker.

I have top pair with a decent kicker facing a small continuation bet of 200 into 550; calling keeps their weaker range in and controls the pot out of position.

Check with second pair out of position on an overcard turn to keep the pot controlled and realize showdown value.

The king is a bad turn card for my marginal top pair, and checking keeps the pot controlled while preserving showdown value.

I hold third pair on a scary runout with a King and Ace. Checking to realize my showdown value is standard.

The river ace makes many plausible calling hands—especially any ace—stronger than my pair of queens, while worse hands are unlikely to pay a bet. I’ll take the showdown value and check back.