HOW do you deliver checkmate with a king???


Somebody needs to clarify this vague question: Discovered checks by the king (including castling) should be included. If they don't, you can't checkmate solely with the king. Otherwise, there is no point of this. 

toomtoom wrote:

You have been sent a letter by an overpaid mail carrier. In the letter it is stated the IRS is auditing you.

The delivery is not the ultimate blow.

In chess it is. The piece that delivers the checkmate delivers "the ultimate blow".