K=King

Q=queen

R=rook

B=Bishop

N=Knight 

Pawns have no symbol, there are idenified by squares they occupy like e4 d6 f7 are pawn moves.

x=capture like Bxa6 means a bishop has captured a piece on a6 and cxd4 means a pawn is capturing on d4.

!=good move           !!=really good move

?=bad move            ??=really bad move

castling= 0-0(kingside)         0-0-0(queenside)

Check=+

Checkmate=# or ++