Dee ihe na-aga n'ihu maka paragraf a - N'oge a, Stean na-etinyekarị ihe mgbaru ọsọ nke ya, ebe ọ bụ na ọ na-arụ ọrụ dị ka otu n'ime Viktor Korchnoi's team of seconds for world championship campaigns in 1977-78 and 1980-81
Ọ dị mma. N'ọtụtụ akụkụ, mmekọrịta ndị mepụtara nwere ihe ịga nke ọma; Korchnoi wepụrụ ụfọdụ ndị nwere ike dị ka Boris Spassky, Robert Hübner na Lev Polugaevsky n'ụzọ ya na Karpov. Ọrụ Stean na-arụ bụ ịkwadebe mmeghe ma ya na Korchnoi ghọrọ ezigbo enyi.