Umnov E.I. Shakhmatnaya zadacha 19 veka./Umnov E.I. Chess Challenge of the 19th Century. In Russian - landofmagazines.com

TransliterationUmnov E.I. Shakhmatnaya zadacha 19 veka.

In EnglishUmnov E.I. Chess Challenge of the 19th Century. In Russian

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