LONDON — World chess champion Gary Kasparov and challenger Anatoly Karpov, in the most complicated game yet in their championship series, Monday ended their 11th game in a draw.
The score in the match is now 6-5 in Kasparov's favor.
On Monday, Karpov produced a novelty, offering to sacrifice a rook for a knight on the 15th move, which led to an intense struggle, with both kings having open defenses.
Eventually, both queens were exchanged and Kasparov gained a small edge. But he gave up trying to win from his position. On his 41st move, he looked up, and the two players shook hands, agreeing to a draw.
The 12th game is scheduled for Wednesday, with Kasparov playing white.