Can I use Chess engine assistence whe playing with a friend

I have a friend which quite brags his skills, i want to play against him with a chess engine can I use it

As far as I know, in non-tournament unrated games you can use anything.

Play casual and inform your friend that you are using an engine. That would be fair.

#3 is correct.

RealKool like i challenge a friend and he is annonymous then can i use

make an account that like takes 2 seconds

Guys I am saying a simple thing

1. He is anonymous
2. He is a friend
3. Game is casual

Now can i Use it w/out his consent

Why would you tell ppl? If he's a jerk go ahead, no one likes a showoff. (take my advice w/ a grain of salt)

xDDDDDDDDDDDD

No, because it's also cheating.
In rated games you gain points using an engine — cheating.
In casual games you gain (if you don't inform) self-esteem, and you lower the self-esteem of your friend. So, in this case you can become arrogant toward a person. And you hurt them. That's also cheating. Because the psychological damage from this can be even more than the psychological damage from losing rating points. So you will be marked as a cheater, if you use an engine without opponent's consent.

Though, if you will also play as anonymous, nothing can happen to your account.

Great, I reported this to the moderators, thanks.