On CBS-TV's "Cold Case" this evening, detectives solve a 1963 murder by recognizing a contemporary note "Nf3 Nc6" as being chess notation for part of the Ruy Lopez opening. One problem -- Back in 1963 few American chessplayers used, or recognized, "algebraic notation" for chess moves. The 1963 version would have been "N-KB3 N-QB3."