 Full-width search ("brute force") programs won out for the simple reason that their programs played better chess.Such programs did not try to mimic human thought processes, but relied on full width alpha-beta and negascout searches.Most such programs (including all modern programs today) also included a fairly limited "selective" part of the search based on quiescence searches, and usually extensions and pruning (particularly null move pruning from the 1990s onwards) which were triggered based on certain conditions in an attempt to weed out or reduce obviously bad moves (history moves) or to investigate interesting nodes (e.g.