Hold'em table

Ks5s is a weak hand on the button facing a raise and a call; folding avoids investing chips with poor equity against two opponents.

72o is the worst hand; folding the small blind to the big blind costs only 50 chips and is clearly correct heads-up against an unknown.

72o is one of the worst hands; folding on the button against two players is standard.

Cheap price to see a flop heads-up against the big blind with a live hand; J6o isn't strong but the pot odds justify completing.

I have 7h2c, a very weak hand, and the BB has already posted 100 while the SB folded. Checking keeps my stack intact and avoids putting chips in with almost no equity.

Top pair on a wet two-spade board; betting for value and to charge draws.

My 7-2 offsuit is a severe underdog on this J-8-9 board, and the opponent's raise shows significant strength. Folding preserves my remaining stack for better opportunities.

T5 offsuit is a weak hand not worth playing from the button facing a raise-equivalent action; folding preserves chips.

With 4c 9s, I have no pair and no strong draw. The small blind posted 50 and the big blind 100, so I'd need to call 50 more to see a flop with a weak hand. Folding preserves my stack for better spots.

8c7c is a speculative suited connector that benefits from implied odds and position. Calling 50 more to see a flop is reasonable; I'll avoid a raise to keep the pot manageable and preserve stack for better spots.

Pocket sixes is a playable hand in position; just complete the 50 to see a flop cheaply rather than bloat the pot out of position relative to the button.

I'm the big blind with a weak hand (J5 offsuit) and no additional cost to see the flop, so I check.

Pocket sixes on an A-K-4 board are weak; checking back in a cheap multiway pot avoids building a pot out of position.

No pair, weak kicker, board is AK with two checks ahead; checking back is cheapest way to see turn with no equity to bet.

Board is dry and I have a backdoor flush draw with no pair; checking keeps the pot small and avoids building a big pot with a weak hand.

My 6s are weak on an A-K board with everyone checking; I'll check and fold to significant aggression rather than invest more.

No made hand, board is checked around, no reason to bet with Jh5d-type hand; take free card.

Board is paired with an Ace and King, and my 8c7c is a weak medium-low hand with backdoor flush potential. Both opponents checked through on the turn, so I'll check behind to control the pot and avoid building a big pot with a marginal holding.

My pair of sixes is likely behind on this ace-high board and all opponents have shown weakness, but betting gains little from hands that fold and I can't profitably value bet. Free showdown is best.

Jack-high with no pair on a paired board has little value; checking back is best given everyone has checked through.

Board is paired with a 4 and contains a King, and my 8c7c is a weak high-card hand with no clear showdown value. Checking keeps the pot small and avoids building a larger pot with a marginal hand.

9-2 offsuit is a weak hand; not worth defending out of position even for a small price.

4-7 offsuit is a weak hand not worth playing out of position preflop facing a raise to call.

I have a pocket pair of twos. With only one opponent left to act and a small pot, a small raise tests their strength and builds the pot if they have a weak hand. Folding is too passive, and calling leaves me out of position with a marginal hand.

J8s is too weak to call a 3x raise out of position heads-up; folding preserves chips.