Viswanathan Anand's campaign ended on a sour note as he lost to English Grandmaster Michael Adams in the seventh and final round to finish seventh in the Grenke Chess Classic in Baden-Baden, Germany today. A victory could have propelled him to a much needed 50% score but Anand let go a drawn end game through another blunder to end on just 2.5 points in his first Classical tournament of the year.The loss also meant a heavy slide of 15 rating points for Anand as he also slipped to ninth spot in world rankings. With three losses, a lone victory and three draws in the tournament, Anand finished a dismal seventh. World champion Magnus Carlsen, meanwhile, added another crown to his long list, winning the title after a long-drawn tie break battle against Arkadij Naiditsch of Germany.