Lately there has been talk about theoretical openings and its importance in determining results. One needs to "profile" an opponent to bring out the right "weapons" to win. Strangely, I believe Fong Yit Ho's profiling of Yeoh Li Tian was well done in capitalising on Black's need to win. Many similar examples in World Championship encounters have used this tactic, eg Lasker - Capablanca 1914, Karpov-Kasparov 24th game 1985 and Kasparov-Karpov Seville 1987. "To win by detaching oneself from winning" is a supreme psychological tactic adapted from Lee Zhong Chang's Thick Black theory. You may wish to read about it from Chu Ching-Ning's book " Thick Face, Black Heart". I'm not sure about the author's familiarity of the various tools available today, but perhaps he ought to know of 2: ChessBase and Fritz. One is a database that contains games played in history (up till the latest month), the other a computer engine that shows r...