Files

         a   b   c   d   e   f   g   h
       +---+---+---+---+---+---+---+---+
     1 | ♖ | ♘ | ♗ | ♕ | ♔ | ♗ | ♘ | ♖ | 1
       +---+---+---+---+---+---+---+---+
     2 | ♙ | ♙ | ♙ | ♙ | ♙ | ♙ | ♙ | ♙ | 2
       +---+---+---+---+---+---+---+---+
     3 |   |   |   |   |   |   |   |   | 3
 R     +---+---+---+---+---+---+---+---+
 a   4 |   |   |   |   |   |   |   |   | 4
 n     +---+---+---+---+---+---+---+---+
 k   5 |   |   |   |   |   |   |   |   | 5
 s     +---+---+---+---+---+---+---+---+
     6 |   |   |   |   |   |   |   |   | 6
       +---+---+---+---+---+---+---+---+
     7 | ♙ | ♙ | ♙ | ♙ | ♙ | ♙ | ♙ | ♙ | 7
       +---+---+---+---+---+---+---+---+
     8 | ♜ | ♞ | ♝ | ♛ | ♚ | ♝ | ♞ | ♜ | 8
       +---+---+---+---+---+---+---+---+
         a   b   c   d   e   f   g   h