With 10 per cent discount comparing to particular volumes. The books explain the pawn play. The first book deals with the pawn play generally, the second one deals with passed pawns. Further description at particular books. Sam Shankland, USA champion in 2018, is a Grandmaster and permanent member of the US national team, winning an Individual Gold Medal in 2014 and Team Gold in 2016. Further information about the book and a sample are available at qualitychess.co.uk