NEW YORK — A blunder cost chess legend Garry Kasparov the third in a series of championship games with supercomputer Deep Junior on Thursday.
"I had a complete blackout," Kasparov said. "Despite Deep Junior having a great team and grandmaster trainers, I had great positions."
Kasparov sacrificed a pawn, one his least-powerful pieces, hoping to further strengthen his position. But the sacrifice actually left him vulnerable, and Deep Junior capitalized on the mistake. Seeing few options, Kasparov conceded.
The six-game series is tied at 1 1/2 games each. Kasparov won the first game Sunday; the second on Tuesday was a draw. The next game is Sunday.