Hold'em table

Open-raising with pocket eights on the button for value and initiative in 3-handed play.

94o from the small blind facing a button open with the big blind behind is a clear fold; it is out of position with poor equity.

T6s is too weak to defend a 2.5x raise out of position with only one opponent; folding preserves chips.

42 offsuit is too weak to open even from the button in 3-handed play, so folding is the clear choice.

62o is the worst hand; folding from the button is trivially correct even with a limp ahead.

Holding weak offsuit 64o out of position in the small blind, folding is the standard play.

Q4o is well below standard 3-handed button opening ranges, making fold the straightforward play.

Blind vs blind with Q5o, a raise of 3x is standard and profitable since Q-high has decent equity against a random big blind hand.

QTo offsuit is too weak to call 3bb against a raise out of position; folding is standard.

Three-handed on the button, T6o is at the bottom of a wide opening range, and a small open pressures both blinds. I have position for the rest of the hand.

Queen-four offsuit is far too weak against a 2.5bb raise out of position; folding is clearly best.

K7o is too weak and plays poorly out of position against a 2.5x button open.

Q8o off the button against two players is a weak hand; folding is the standard profitable play.

Holding 87s in the small blind after the button folds, raising to 3bb is a standard aggressive opening line blind vs blind.

K3o has enough equity against a wide small-blind steal range, and I'm getting 2:1 with position for the rest of the hand, so calling is profitable.

The paired broadway board heavily favors the big blind's calling range, so checking our weak backdoor holding out of position is standard.

K-high with only backdoor straight draws on a paired board that favors the preflop raiser; checking back takes a free card and keeps the pot small.

I have eight-high with no draw on a paired, three-heart board. Checking to see what the opponent does rather than bluffing into their calling range.

Bottom pair with a K kicker on a wet, paired board has showdown value but few worse hands would call a bet, so I'll check back in position and realize equity.

Our 8-high has virtually zero showdown value as even unimproved hands like K-high or A-high beat the board's two pair. As the preflop raiser, betting 60% pot can fold out better unimproved high-card hands and chopped holdings.

I have a full house, threes full of jacks, which beats flushes, two pair and trips. After all the checking, the small river bet looks like it could come from many worse hands. A moderate raise gets value from hearts and Qx while keeping my losses small against Jx or QQ.

I only play the board with two pair Jacks and Threes with a Queen kicker, and any Ace, King, or actual made hand beats me. Calling only chops at best against pure air without an Ace or King.