What are those strange-looking links with names like e4 or Nf3?
The tkChess script provides you with a set of links for making moves. These links are labeled in what is known as algebraic notation. In algebraic notation, every square on the chessboard gets a name consisting of a letter indicating its file (column) and a number indicating its rank (row). The files are given the letters a through h running from left to right, and the ranks are given the letters 1 through 8 with the lower numbers at the bottom of the board. For example, the lower left-hand corner of the board is a1, the upper right-hand corner is h8, the starting position of the white king is e1, and the starting position of the black queen is d8. Moves are indicated by giving a piece name (R = rook, N = knight, B = bishop, Q = queen, K = king) followed by the square to move it to. For example, from the opening position Nf3 will move white’s king’s knight to square f3 (two squares in front of the king’s bishop). If no piece name is given, it’s a pawn move: for example, e4 is a very co
