Boris Katalymov (Russian: Борис Николаевич Каталымов, romanized: Boris Nikolaevich Katalymov or Katalimov; 13 June 1932 – 1 February 2013) was a Soviet (Ukrainian) and later Kazakhstani chess player. He spent in youth in Lviv playing in the same junior tournaments and for the same junior team as legendary Leonid Stein.[1][circular reference] He was awarded the title of International Master by FIDE in 1996. Katalymov was multiple times champion of Kazakhstan.[2] He took the silver medal in the 1995 World Senior Chess Championship, held in Bad Liebenzell, Germany.[3]The Katalymov Variation of the Sicilian Defence is named after him.[4][better source needed]. Boris Nikolaevich spent his later years teaching chess to young children and teenagers at the 'School Palace' in Almaty, Kazakhstan.