Sergei Tkachenko, a member of the Ukrainian team that won the 5th World Chess Composition Tournament in 1997 and which came second in 2000, 2004, 2013, and 2017, has collected 100 studies whose common theme is that white ends up with just two knights in the finale, yet manages to win or draw. There are no more than six moves in almost all solutions, so experienced chess players can analyze the positions directly from the diagrams. Newbies to chess problems will also find analyzing these studies useful. The diverse set of tactical ideas involving two knights in the finale will enable them to gain a deeper understanding of how the knight pair combines. Some of these studies are classics from bygone ages. Others were originally published in the Soviet Union or ex-Soviet countries. This is the eighth book in the World Champion’s Favorite Studies series by Sergei Tkachenko to be published by Elk and Ruby Publishing House. Check out the publisher's website for special deals on this and other books! "Lovely books and a great introduction to beautiful studies!" Grandmaster Matthew Sadler in New In Chess magazine, May 2022 (a review of Two Knights Save the Day and Two Bishops Save the Day) Sergei Tkachenko (born in 1963, near Odessa, Ukraine) is a member of the Ukrainian team that won the 5th World Chess Composition Tournament in 1997 and which came second in 2000, 2004, 2013, and 2017. He has won the studies section of the Ukrainian Chess Composition Championship six times and has won prizes, many of them for first place, in over 100 international chess composition tournaments. Sergei coaches the Ukrainian chess composition team. He is also the press secretary of the Chess Composition Committee of the Ukrainian Chess Federation. Sergei is an award-winning author who has written 17 chess books in English published by Elk and Ruby, including compositions and on historical themes. He is deputy chief editor of a Ukrainian chess composition magazine called Problemist of Ukraine and has a regular studies column on the ChessPro website. Sergei is a member of the Ukrainian Union of Journalists. He is a historian and archivist, as well as being a mechanical engineering graduate.