Algebraic notation avoiding ambiguity rank or file preference In the following example (and similar situations you can make up), both queens can capture the knight. If for instance the queen on f5 takes the knight, this could be written as: Qfxd3 or as Q5xd3. Is there a preference/guideline/law/... for using one or the other notation in this case? I am specifically interested in notations made by humans in a normal game situation, not in PGN notation.

8/8/8/5Q2/8/3n4/4Q3/8 w - - 1 1
This would be Qfxd3.

From wikipedia (emphasis is mine):


  When two (or more) identical pieces can move to the same square, the moving piece is uniquely identified by specifying the piece's letter, followed by (in descending order of preference):
  
  
  the file of departure (if they differ); or
  the rank of departure (if the files are the same but the ranks    differ); or
  both the file and rank (if neither alone is sufficient to identify    the piece—which occurs only in rare cases where one or more pawns
  have promoted, resulting in a player having three or more identical
  pieces able to reach the same square).