The tactics manual for pre-intermediate to advanced players with ca 700 samples. The author is FIDE master with decades of experience as trainer. He uses original method how you can to improve your tactical skill and calculation. Its name is Computer Eyes - it is a metaphor only, the book does not deal with computers. This New and Extended Fourth Edition of Hertan’s award winning book presents 50 extra pages with new and instructive combinations. Index of players. With a foreword by three-time US Chess Champion Joel Benjamin. The book was awarded by ChessCafe as 2008 Book of the Year. Further information about the book and is available at newinchess.com. 3 pictures.