Computer chess built in by the evaluation function and pruning/extension rules began to match the best players in the world. It turned out to produce excellent results, at least in the field of chess, to let computers do what they do best (calculate) rather than coax them into imitating human thought processes and knowledge. In 1997 Deep Blue defeated World Champion Garry Kasparov, marking the first time a computer has defeated a reigning world chess champion in standard time control. Computer chess programs consider chess moves as a game tree. In theory, they examine all moves, then all counter-moves to those moves,
Computer Gaming World "Best Professional Adventure Gaming Magazine of 1987". "The New York Times" repeatedly praised CGW, placing it as one of the premier computer game publications of its time. In 1997 the newspaper called it "the leading computer game magazine", In 1999 "the bible of computer game purists", and in 2005 "one of the top computer game magazines". On August 2, 2006, Ziff Davis Media issued a press release detailing their plans to halt circulation of "Computer Gaming World". As part of a joint-venture project with Microsoft, Ziff Davis launched a new magazine dubbed "" in Fall of 2006. The new magazine