N-391 Composed Studies E-book: Knight Endgames N+P vs N+P April 26, 2019June 27, 2020 GM Vlatko Kovacevic90 Occasionally a win may be achieved also in the queen ending. A study by A. Troitzky nicely illustrates the theme. … This content is for Premium members only. Subscribe Login Try for Free GM Vlatko KovacevicVlado Kovacevic is a chess grandmaster and an endgame expert. He very successfully competed on the national team. From 2000 – 2004, he acted as selector of the Croatian Men’s national team. He is also a well-known chess author.