If u have pocket kings and raise preflop and get a flat call and a ace come on the board would u c-bet or fold its a tuff spot considering no reraise what would you do
Just because an Ace comes on the Flop, that doesn't automatically mean the opponent had an Ace in their hand to pair; in fact, it is theoretically LESS likely they hold an Ace now because one is accounted for among the community cards. When the hand began, there were 4 possible Aces the opponent could have held (As, Ac, Ad, Ah) and now with one on the board, they only have 3 Aces they are potentially holding
If you have KK and an Ace hits the Flop, then I'd play slightly more cautiously in the event they do have a paired Ace, but KK is still a premium hand which beats a ton more. The opponent might have an Ace sure, but they might also have pocket pairs lower than KK, random draws to straights or flushes and of course lots of bluff
hands. KK is still good and therefore (especially based on how likely you think the opponent has an Ace or not based on hand reading, player playstyle, table image etc.) you should still be willing to build a pot with betting/raising
Other than hand reading, or player dependent things, I'd probably proceed greatly based on the board texture. For example:
a Flop of Ah Jd 5c is a spot where KK might be ahead. Based on the opponent seat at the table, they are less likely to hold a hand which paired the 5 and the is a real possibility they paired the Jack which KK is ahead of. I might be inclined to c-bet this Flop or continue thinking my KK might be good.
Conversely, a Flop of As Js Ts with us having Kh Kd (or any Kings without a suit matching the board - spades in this example) is a wet and coordinated board where we may opt to check or c-bet smaller (like one third pot). Of course, we may also bet big like a pot-sized c-bet for protection against getting outdrawn, but it is clear that whatever we do here with KK is scary. The opponent might have paired their Ace (ahead of us) or they might outdraw us (namely the Flush). The reason I like checking some percentage of the time in this scenario is because we do also have outs to the nut straight by any Queen appearing after the Flop (but Qs would by far be the most dangerous of the four Queens because that puts four to a Flush on board, straight possible [even if our KK blocks combinations of straights] and even the famous Royal Flush is now possible)
