Intermediate - Middle Game: From the game Arkady Naiditsch - Vladimir Kramnik, Dortmund 2009. Black plays and wins.

Difficult - Study: A very beautiful 1924 chess study by Troitsky. In this short video, Chess Queen Alexandra Kosteniuk shows you how to solve it to the end, you will enjoy it for sure.

Difficult - Middle Game: From the game Alexandra Kosteniuk - Shen Yang, Beijing 2008. White plays and wins. True strategical thinking required.

Easy - Middle Game: From the game Jakob Rosanes vs. Adolf Anderssen, 1863. Black plays and wins.

Intermediate - Opening: From the game Sangla - Karpov, 1968. Black plays and wins.

Difficult - Study: A difficult study by Kubbel from 1925. White plays and wins. The goal is simple: mate the Black King or win the Black Queen. It's forced.

Easy - Middle Game: From the Book of Stamma, 1737. White plays and wins.

Easy - Middle Game: Black plays and wins. From the game Romieux - Kosteniuk, Paris 2008.

Intermediate - Middle Game: A position from the game GM Maxime Vachier-Lagrave against GM Alexandra Kosteniuk. What would have happened, had Maxime played 1. h8 = Q?

Intermediate - Study: A 1948 Study by WOTAWA, white plays and wins.

Intermediate - Middle Game: A key position from the game Aronian - Van Wely, Corus Wijk aan Zee 2008. White plays and wins.

Intermediate - Middle Game: From the game Klinger - Blatny, 1988, white plays and wins.

Difficult - Study: Solution of Christmas Competition Position 3. Study by Troitzky, 1910. White plays and wins.

Easy - Middle Game: Solution of Christmas Competition Position 2. Taken from a game Paulsen - Morphy, New York 1857. Find Black's next move.

Intermediate - Middle Game: Solution of Christmas Competition Position 1. End of game Steinitz - Van Bardeleben, Hastings 1895. White plays and wins.

Difficult - Study: Grandmaster Kosteniuk tells you precisely her thinking process while solving a difficult chess study by Ryabinin. White plays and draws.

Intermediate - Middle Game: A fragment of the World Blitz Championship Qualifyers GM Kosteniuk - GM Amonatov, Moscow 2007. White plays and wins.

Intermediate - Middle Game: From the game Danielian - Kosteniuk, European Team Championships, Crete 2007. Black plays and wins.

Very Difficult - Endgame: The Philidor position is one of the key positions in which the stronger side wins in Rook + Bishop vs. Rook. It's useful to know about it in case you get that endgame in your tournament practice.

Intermediate - Endgame: From the game Fressinet - Kosteniuk, Villandry 2007. Black to play and win. Variation missed during the game.

Intermediate - Study: A 1926 Chess Study by Rinck, white plays and wins.

Very Difficult - Study: An amazing 1937 study by Korolkov, with an incredible final mating position. Watch and listen to Alexandra run you through the solution.

Intermediate - Middle Game: From the game Radjabov - Anand of the 2006 Blitz World Championship, white wins in the Poisoned Pawn Sicilian Defence.

Easy - Problem: Mate in 3 chess problem by Galitsky. Prove to Black that he'd be better off without his pawns.