Hold'em table

Q6o is a weak holding in the small blind position facing an all-in or raise situation. With only 100 chips to call and limited equity against likely better holdings, folding preserves chips for stronger opportunities.

Complete the small blind with a suited, connected-ish hand and play a heads-up pot in position postflop.

I'm BB with a weak offsuit hand (5-8), no raise to face, so I check for free and see the flop cheaply.

A small continuation bet can fold out the big blind's unpaired hands while credibly representing an ace. It risks little relative to the pot if called.

5-8 offsuit missed the board completely; small bet but no equity to continue against a bet on an ace-high paired flop.

7-high offsuit is too weak to open profitably from the button in this structure.

Cheap price to see a flop heads-up against just the BB with a speculative hand.

Ace-Four offsuit is a marginal hand in the big blind. With one fold and one caller, raising 3x the big blind (to 400) is a standard play to apply pressure, improve my position, and either win the pot immediately or play a heads-up situation where my ace gives me good equity potential.

6-8 offsuit facing a raise from the big blind is weak; not worth calling out of position.

Button raise with Ace-high offsuit is a standard steal attempt against blinds.

4-2 offsuit is one of the weakest hands in poker. Facing a 3x raise from the button with a 10BB stack remaining after calling, folding is correct as this hand has poor equity against a raiser's range and is not worth the investment.

J4 offsuit is too weak to defend against a button 3x raise from the big blind, especially out of position.

9d-Jd is a solid hand with good straight and flush potential. Raising to 300 (3BB) applies pressure, defines hand strength, and allows me to win the pot immediately or proceed with position advantage as the button.

43 offsuit is too weak to defend from the small blind against a button open, especially with the big blind still behind.

J9 offsuit is a reasonable button opening hand three-handed. Raising applies pressure to the blinds and retains initiative.

Suited one-gapper is playable for a cheap price with implied odds in a multiway pot.

AK is a premium hand that benefits from building the pot and taking down the hand preflop or playing a strong position. A significant 3-bet puts pressure on the initial raiser and the caller while maintaining fold equity. This aggressive move is standard with premium holdings in position.

J9 offsuit is too weak to continue profitably versus a large big-blind squeeze with the small blind still involved.

Facing a big 3-bet to 1000 with weak suited connectors (9d7d) out of position; not worth continuing versus a strong raising range.

J2 offsuit is a weak hand not worth playing from the button facing a raise; folding preserves chips for better spots.

3h2s is the worst possible hand in poker. Even in the small blind facing a 50-chip call with already 50 invested, folding is correct to avoid losing additional chips against a remaining opponent.