While there is no official standalone PGN file available for free download from the publisher, you can access the interactive content of Sergei Tkachenko's through digital chess platforms and ebook retailers . Official Digital Access
: Aimed at intermediate players looking to improve their tactical understanding of endgame resourcefulness. One Pawn Saves the Day - Sergei Tkachenko - Forward Chess
: Features 100 chess studies where White ends up with only a single pawn but still manages to win or draw.