Kramnik played a six-game match against the computer program Deep Fritz in Bonn, Germany from 25 November to 5 December 2006, losing 2–4 to the machine, with 2 losses and 4 draws. He received 500,000 Euros for playing and would have twice as much had he won the match. Deep Fritz version 10 ran on a computer containing two Intel Core 2 Duo CPUs. Kramnik received a copy of the program in mid-October for testing, but the final version included an updated opening book. Except for limited updates to the opening book, the program was not allowed to be changed during the course of the match. The endgame tablebases used by the program were restricted to five pieces even though a complete six-piece tablebase was widely available.