Alexander Onischuk vs Alfonso Romero Holmes
Hoogovens Wijk aan Zee NED round 1.1 1995.01.13
King’s Indian Defense: Averbakh Variation 1-0

Gata Kamsky vs Alexander Onischuk
US Championship St. Louis, MO USA round 3 2012.05.10
London System: Poisoned Pawn Variation 1-0

Vassily Ivanchuk vs Alexander Onischuk
World Team Championship Beer Sheva ISR round 2 2005.11.02
Queen’s Gambit Declined: Lasker Defense 1-0

Magnus Carlsen vs Alexander Onischuk
Biel Blitz Playoff Biel SUI round 4 2007.08.02
Ruy Lopez: Brix Variation 1/2-1/2