Openings book by Alex Kure, with 1,497,114 positions, based on games with >2500 Elo and historical material. Database: 87,758 games, Elo >2550 (= Strong Database from Powerbook 2010) Three 3D boards (wood, elegant wood, modern) Seven languages (German, English, French, Spanish, Italian, Dutch, Polish) One year Premium membership on Playchess. http://www.chessbase.com/products/deepfritz12/index.asp Serial de Activacion F12: QWJKK-TLA43-2UWEY-U99CR-S77ZL-DF12