The Power of Knights!

I have a question: When you put an opponent in double check, he/she can't take any pieces threatening their King? It seems that way, I just want to double check.

Yes, when a person is in double check, their only choice is to move their King. Or were you just trying to be funny?

No - it was a sincere question. Thanks for the clarification.

Of course, he can still capture one of the pieces with the king move!

It's not a rule, it's just common sense - if two pieces give check, blocking one of the checks or capturing one of the pieces still leaves the other check. So the king must move. But there's no rule that says that king move can't capture one of the check giving pieces.

When, you think about it, if the king is being attacked twice then getting rid of one of the attacking pieces isn't really going to help with the other piece.  Unless you are taking the first piece with your king which then puts him out of check from the second piece.  Understand?

@KriptikMike: well done, spotting the pattern there! Pretty different from the usual situation.

Okay, the only reason I thought you might be was becuase you wanted to double check about double check. :)

Scarblac and Grayhound made it a little more clear than I did.

Ah, the pun threw you off. I honestly didn't give it a double look.