The double round robin portion of the Champions Showdown concluded in St. Louis on Saturday, and the stage finished with Viswanathan Anand and Veselin Topalov tied for first. Anand led after day two and drew both games today. Against Topalov in round 5 (the first game of the day) Anand had a chance to press late in the game, but for the most part his games were balanced and the draws were justified. That left him at +1, and the question was whether he would be caught - or passed - by Topalov or Hikaru Nakamura.
In round 5, Nakamura defeated Fabiano Caruana, and thereby joined Anand at +1. Nakamura's novelty was met by a logical plan, the only problem was that Caruana was a tempo shy of successfully implementing it. 18.Qb3 was a good move, winning a pawn, and Nakamura confidently converted his advantage.
With a draw against Topalov in round 6 he'd tie Anand for first in the stage, and a win would put him in clear first. Instead, Topalov won a very good game, thereby concluding the classical portion tied for first.
Sunday they play rapid chess; meanwhile, the games are here, with my notes.