You can't,unless your opponent helps you out. It is theoretically possible to have a game go only two moves.
how can i kill the king in 3 move?

You can't,unless your opponent helps you out. It is theoretically possible to have a game go only two moves.
Find something else to play... HALO-3 comes to mind.
Chess is a gentleman's game... you do not "kill the king" in chess.
I like your "gentleman's game response... Now for question from someone who almost never plays so.... A stupid question on "how a knight moves.. (rules of game) The rules state vertical two forward and one horizontal although one horizontal and two forward will get you to the same position so the rules could read the later. Please offer you opinion with a gentlemans response. Please be relevant, helpful & nice!
I personally think of it as "the knight jumps to the opposite color, 2 squares distant, in any direction". All that "2 squares over and 1 square sideways" stuff always seemed overly complex and unnecessarily confusing to me. Any more, though, I can just look at a knight and instantly "see" where it can go... like a lit up circle of squares around him.
Nope.
That is one possible meaning (Arabic), from only one of the many "languages" of the origin of chess. Most historians think Checkmate comes from the Farsi (Persian, Iranian) phrase "Shah Mat" (pronounced Shaw-Mate) which means "The King is Helpless" or "The King is Frozen". The fact that the king is never removed from the board does not tend to support other language/dialect meanings involving the "death" of the king.
how can i kill the king in 3 move?