there is none, the fastest possible mate is 2 moves
one-move checkmate
rainxdancer thats not mate. He said checkmate, not win.
also the definition of checkmate is as follows:
http://www.thefreedictionary.com/checkmate
To attack (a chess opponent's king) in such a manner that no escape or defense is possible, thus ending the game.
so technically if you take the king, it would be something other than checkmate.
Technically.
I wouldn't reccommend 2. ...Qh4??# for Black in the first diagram. You shouldn't bring out your Queen so fast. ;)
Is there such a thing as a one-move checkmate!?
If so please share it!
If not please post your closest to none move checkmate!