Original sentence: Against Kasparov, he has a -6 =27 +15 score
Edited sentence: Against the best player during the last 20 years, Kasparov, he has a -6 =27 +15 score, which might not look impressive, but is nonetheless better than Kasparov's result against several other top 10 players.First held in 1978, it was for several years sponsored by a local millionaire and chess fan Luis Rentero, who handed out great prizes and secured the participation of the leading chess players of the world.In matches endurance and good nerves are especially important, and Ivanchuk's biggest flaw is bad nerves.The annual Linares tournament is one of the strongest tournaments every year