Hold'em table

A2 offsuit is a reasonable button open three-handed: the ace blocks strong hands, and position improves postflop playability. Raising to 2.5 big blinds can win the blinds while keeping the investment modest.

K6o is too weak to defend out of position against a button open with the big blind yet to act.

Jack-five offsuit is too weak to continue against a button open after the small blind folds. Folding avoids paying 150 more with a dominated, poorly connected hand.

A6s on the button in 3-handed play is well within the standard opening range, so raising to 2.5bb is standard to build the pot and apply pressure.

T9o out of position against a button open is too weak and easily dominated, so folding avoids a marginal spot.

Calling costs 150 into a 400-chip pot, giving favorable odds against a button opening range. With no rake, 8♠5♠ has enough suited-hand potential to defend the big blind despite being out of position.

With eight-high and a gutshot straight draw, checking to the preflop raiser preserves chips and avoids building a pot out of position with a weak hand.

I have Ace-high with backdoor equity on a wet board; checking back controls the pot and realizes showdown value in position.

The turn gives me second pair plus a gutshot, and the opponent's flop check-back leaves room for a protection bet. This sizing can get calls from weaker pairs and draws while denying equity to overcards.

Facing a turn bet of over half pot with only ace-high and a gutshot straight draw, we do not have sufficient pot odds or clean outs to continue.

32 offsuit is too weak to open from the button for a full big blind; folding preserves the stack.

Completing the small blind costs only 50 chips into a 150-chip pot. J5 offsuit is playable heads-up at this price, but too weak to build a larger pot out of position.

K9s has strong equity and playability in position against the small blind's limp, making an isolating raise to 3.5 bb profitable.

J5 offsuit is too weak to continue against this raise out of position. Its poor playability and domination risk make folding preferable to calling or reraising.

32 offsuit is too weak to profitably open or limp, even on the button. Folding avoids investing chips with poor equity and limited postflop potential.

K4o is too weak to profitably open or complete out of position against the big blind.

On the button in 3-handed play, K9o is a standard opening hand to steal the blinds or play in position.

A2s out of the small blind is dominated too often by a button open, and calling leaves me out of position with the big blind still to act. Folding avoids a marginal spot.

T3 offsuit is too weak to defend against a 2.5bb button raise with 100bb stacks. Its poor playability out of position makes folding preferable to calling or bluffing.

Suited connectors on the button in three-handed play are worth a standard open; raising to 3bb builds the pot and takes the initiative.

QTo is marginal against a 3bb button raise and realizes equity poorly from the small blind, with the big blind still to act. Folding avoids an unfavorable out-of-position pot with a frequently dominated hand.

Holding 82o in the big blind facing a 3x raise is a clear and standard fold.