Mikhail Tal vs Dimitar I Donchev
Yerevan Yerevan URS 1986.??.??
English Opening: Anglo-Indian Defense 1-0

Dimitar I Donchev vs Veselin Topalov
BUL-ch Sofia BUL round 9 1989.06.??
French Defense: Tarrasch Variation, Guimard Defense, Main Line 1-0