Houdini PRO Aquarium 2015 Houdini PRO Aquarium 2015 is a revolutionary analysis, database and chess publishing tool, combined with one of the world's strongest chess engines Houdini 4 PRO Aquarium 2015 can auto-find chess programs (including the strong Stockfish engine) on the Internet, download and install them - all in a couple of clicks. Game commenting, searching, powerful chess trees, playing against the computer, databases, advanced publishing features and a base of 6 million games Access to 7-piece Lomonosov Endgame Tablebases until the end of 2015 Bonus: Chess Opening Encyclopedia