An opening trap is particularly effective if it is built up with natural-looking development moves and is thus hardly recognisable for an uninformed opponent. Trap expert Rainer Knaak presents a collection of promising traps from tournament practice in every issue of ChessBase Magazine. In the current issue #215 there are eight examples - from Trompowsky via Sicilian and Ruy Lopez to King's Indian. Rainer Knaak also demonstrates three of his favourite traps in video in CBM #215; you can watch one of the videos here!