In the continuing quest to see if humans can outpace their electronic creations, the humans have lost another, perhaps decisive, round.
A six-game chess match between Vladimir Kramnik of Russia, the world champion, and Deep Fritz, a souped-up version of commercially available chess software made by Chessbase, ended today in victory for the computer, which won the final game and clinched the match, 4 games to 2.
Mr. Kramnik fell behind in the match when he lost Game 2 by walking into a checkmate in one move with hardly any pieces remaining on the board, a mistake that ranks as one of the biggest in championship-level chess history. Needing a win today to tie the match, Mr. Kramnik took some chances, eventually lost a pawn, and was then outmaneuvered by the computer.