In chess, a transposition is a known position reached by a different move order than usual - a less obvious way of getting to somewhere you want to go, leading to confusion for your opponent. Every chess player has a number of them in his arsenal, and they are used most often in openings.
Used to brilliant effect by Garry Kasparov and numerous imitators, the Scotch Game is one of the most popular openings among today's club players. The Scotch Game Explained, unlike most openings books, offers a back-to-basics approach tailored to novices and intermediate player
The Sicilian Bb5 is the most popular and successful Anti-Sicilian variation. Vassily Ivanchuk used it to score a stunning win against Gary Kasparov at Linares in 1991. This book provides full coverage of both 2...d6 3. Bb5+ and 2...Nc6 3.Bb5. It shows you how to implement in your own games the ideas that have worked so successfully at the highest level.