Association of Chess Professionals Book of the Year
From the very outset, the ACP Book of the Year contest proved to be an exciting race between three books: Mark Dvoretsky's "Tragicomedy in the Endgame" (Russell), John Nunn's "Understanding Chess Middlegames" (Gambit) and "Garry Kasparov on Garry Kasparov, Part 1" (Everyman Chess). As the days passed by, and with almost 200 votes cast, these three books kept alternating on top of the list - gathering altogether almost 60% of the preferences. On the closing day, John Nunn and Mark Dvoretsky had managed to overcome Garry Kasparov by a mere three votes, totaling 39 points each.
Thus, the ACP Book of the Year for 2012 is a two-way tie between Mark Dvoretsky's "Tragicomedy in the Endgame" (Russell) and John Nunn's "Understanding Chess Middlegames" (Gambit). After consultation, the ACP Board decided to award both with the title of ACP Book of the Year for 2012.
ACP Board - 2 May 2012