Update README.md

README.md

@@ -12,7 +12,7 @@ In this work, I apply NLP methods of analysis to non-linguistic data, metaphoric
 
 Chess game notations are also a kind of text, and one can consider the records of moves or positions of pieces as words and statements in a certain language.
 
-According to the rules of the PGN (portable game notation) format, an uppercase letter denotes a white piece, while a lowercase letter denotes a black piece. The letters themselves are obvious: R - rook, N - knight, B - bishop, etc. Castling is denoted by the move of the king (the movement of the rook is implied by default).
+According to the rules of the PGN (portable game notation) format, an uppercase letter denotes a white piece, while a lowercase letter denotes a black piece. The letters themselves are obvious: R - rook ♖, N - knight ♘, B - bishop ♗, etc. Castling is denoted by the move of the king (the movement of the rook is implied by default).
 
 An example of a chess game recorded in PGN format looks like this: