Alekseï Chizhov (Tsjizjov) on December 13, 1991, in Tallinn, Estonia, after he had crushed challenger Guntis Valneris in a match for the World Championship Draughts with 22-10, six victories in sixteen games. Thanks to Henk Boers.
The matchbook Tsjizjov-Valneris 1991 can be downloaded on Scribd:
http://www.scribd.com/doc/86366163/Matc ... in-Tallinn
