Indian prodigy Rameshbabu Praggnanandhaa is in pole position to win the Polgar Challenge as the online chess event enters its final day. The 15-year-old from Chennai won three in a row before being ...

Chess positions are written in algebraic notation, which denotes each piece (K=king, Q=queen, R=rook, B=bishop, N=knight, and no letter for pawns) and square position on the board (letters a to h from ...