No. 12.
In Diagram No. 12, for instance, both the Pawns that have been moved would be spoken of as on K 4. The Knight that has been moved is on K B 3, because it is a white Knight. If it was a black Knight it would be on K B 6, reckoning from the black side of the board for the black pieces. In order to test your understanding of this system of notation, which is very important in following published games or problems, take the board and men, white side next you, and set up the following position, remembering that when no number is given, the piece stands upon the square originally occupied by the piece which gives its name to the file:—
Black men;—King on Q R’s; Queen on Q Kt’s; Pawns on Q R 2, and Q Kt, 3; Rook on Q R 3.
White men;—King on Q Kt 5; Queen on Q B 6.
Now look at Diagram No 11, and see if you have it right.
In addition to the notation of position, there is that of action. If a dash is placed between the initials of the piece and the definition of the square, it shows first the piece moved, and then the square to which it is moved. In Diagram No 11, for instance, Black’s only move to cover the check would be given: Q-Q Kt 2; and White’s continuation would be given; Q-K 8.
The first of these might be abbreviated by saying, Q-Kt 2, because there is only one Kt 2 to which the Queen could be moved.