Manual de Chess King 2015 | Page 308

PART 2 • The chess tree Let's take a closer look at the chess tree to gain a clearer understanding of what the numbers mean. • In the position we've been discussing, the most popular reply for White is to castle on the Kingside. It has been played in 15,999 games (as seen in the “Positions” column; this tells us how many times the position appeared in the database). 308 chessking.com