castleing

Where did that movement off rook and king come from.always thought this but never thought to find out of ask,you cant do this with other pieces on the board

In early chess variations the king could move two squares (in any direction?) on his first move.  Around this time castling occured in two moves.  (From memory) The rook moved on move x and the king jumped over it moving two squares on move y.  This eventually was replaced by a single move castle. 

I'm not sure this answers your question though because I believe even then the early slower castling maneouver was the only move that the king could jump over a piece.  Once again this is just from memory.

 cheers it does does anyone else have any more knowledge on this subject

Letting wiki keep us all slightly misinformed about everything here is an excerpt from a page on castling.

"The rule of castling has varied by location and time. In medieval England, Spain, and France, the white king was allowed to jump to c1, c2, d3, e3, f3, or g1, if no capture was made, the king was not in check, and did not move over check. (The black king could move similarly.) In Lombardy, the king could jump an additional square to b1 or h1 or to a2. Later in Germany and Italy, the king move was combined with a pawn move.

In Rome from the early 17th century until the late 19th century, the rook could be placed on any square up to and including the king's square, and the king could be moved to any square on the other side of the rook. This was called "free castling".

In the Göttingen manuscript and a game published by Luis Ramirez de Lucena in 1498, castling consisted of two moves: first the rook and then the king.

The current version of castling was established in France in 1620 and England in 1640 (Sunnucks 1970:66)."

been enjoying the search.  Just found this interesting game.  It holds the record for the most castles in a game.  Being 3.  Obviously illegal and I don't think I can put up a diagram as a result but here it is.

1.e4 e6 2.d4 d5 3.Be3 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Nf3 Qb6 8.Qd2 c4 9.Be2 Na5 10.O-O f5 11.Ng5 Be7 12.g4 Bxg5 13.fxg5 Nf8 14.gxf5 exf5 15.Bf3 Be6 16.Qg2 O-O-O 17.Na3 Ng6 18.Qd2 f4 19.Bf2 Bh3 20.Rfb1 Bf5 21.Nc2 h6 22.gxh6 Rxh6 23.Nb4 Qe6 24.Qe2 Ne7 25.b3 Qg6+ 26.Kf1 Bxb1 27.bxc4 dxc4 28.Qb2 Bd3+ 29.Ke1 Be4 30.Qe2 Bxf3 31.Qxf3 Rxh2 32.d5 Qf5 33.O-O-O Rh3 34.Qe2 Rxc3+ 35.Kb2 Rh3 36.d6 Nec6 37.Nxc6 Nxc6 38.e6 Qe5+ 39.Qxe5 Nxe5 40.d7+ Nxd7 0-1