Hold'em table

Calling 100 with 5dTh on the button is reasonable; I can see a flop and play position against the blinds.

Completing the small blind is cheap with 5:1 pot odds, and Q4o is weak but worth seeing a flop in a limped three-handed pot.

JTs plays well multiway and I can see the flop for free as the big blind after two limps.

With Qh4s on an A-T-3 flop, my hand is weak and out of position in a multiway pot; checking keeps the pot small and realizes whatever equity I have.

Middle pair with a jack kicker is decent but the ace is out and two opponents remain, so checking controls the pot and sees the turn cheaply.

Board is A-high with two hearts; my T-high is weak and vulnerable. Checking keeps the pot small and avoids building a big pot with a marginal hand.

With Q-high and no pair on a paired board, I have no showdown value and no need to put chips in as a bluff into two opponents. Checking keeps the pot small and gives me a free river card.

I have two pair with a jack kicker, but the paired aces are communal, so many aces, tens, and better kickers beat me. With no bet facing me in a small pot, checking is better than betting into a range that continues mostly stronger.

The board is paired with two Aces and I hold a weak Ten-high with a backdoor flush draw. Checking keeps the pot small and avoids building a bigger pot with a marginal hand on a dangerous turn card.

With Q-high and no pair on an ace-high board, I have little showdown value but no reason to bluff into two players after they checked every street. Checking realizes my equity and avoids risking chips when any pair likely calls.

Two pair is decent but vulnerable to any ace or full house multiway after passive action; checking the small pot to showdown is the lower-variance choice.

The board is paired Aces with a Ten high, and my hand is just Ten-high with a backdoor flush draw that missed. Both opponents checked through all streets, so I'll check behind to avoid bloating the pot with a weak hand.

69o is a weak offsuit hand with poor playability, and calling 100 chips out of position relative to the blinds is not profitable enough in this 3-handed spot.

J2o is too weak to complete or raise out of position against the big blind after the button folds, so I surrender the small blind.

Button open with suited connectors in a three-handed pot; a small raise takes the initiative and can win the blinds or play a cheap pot in position.

9c Kd is a weak offsuit hand that lacks sufficient equity to call a raise from the button, especially when out of position.

Q5s is a marginal but playable hand closing the action against a likely wide button raise, and I'm getting good pot odds (150 to call into 400).

Out of position with Qd5d on an ace-high flop, I have little equity and no need to protect; checking keeps the pot small and avoids bluffing into the preflop raiser.

Bottom pair with a weak kicker on an ace-high board is not strong enough to bet for value, and the opponent has already checked, so taking the free card is best.

I have only queen-high with a weak gutshot and no flush draw, so checking controls the pot and avoids building a large pot with little equity.

Bottom pair plus a spade flush draw and some straight equity; a small turn bet builds the pot and can fold out ace-high and weak pairs.

Q-high with only a gutshot on the turn is too weak to continue against a bet; the pot odds do not justify chasing four outs.

I hold 4d Jh, a weak offsuit hand with no pair and poor post-flop playability. Facing a 100 big blind raise from the big blind with only 150 in the pot, the pot odds do not justify calling, so folding preserves my stack.

Button folded, leaving heads-up; K7o has sufficient equity against a random big blind, and a min-raise applies pressure while taking the initiative.

ATo is ahead of a small-blind min-raise and I have position, so a small 3-bet builds the pot and denies equity rather than flatting.

K7o is too weak to continue against a three-bet, especially out of position with only 400 to call but poor playability. Folding avoids investing more chips with a dominated offsuit hand.

Three-handed button with K7o is a reasonable spot to raise and pressure the blinds; a 3x open can take the pot down preflop or isolate weaker hands.

Q6 offsuit is too weak to continue out of position against a button open, so folding is the highest-EV option.

I have 2h Jh, a weak hand that doesn't play well out of position. Seat 2 raised to 300 and seat 3 folded, so I'm facing a 200 call with poor equity. Folding preserves my stack.

36o is too weak to call or raise from the button against a live big blind.

I have 2d Kh, a weak offsuit hand, and the small blind has already folded. Calling 50 more to see a flop with this hand offers poor odds and equity, so folding is the best play.