Stelios Halkias vs Ioannis Nikolaidis
Greek Championship Athens round 3 2004.12.06
Dutch Defense: Classical Variation 0-1

Ioannis Nikolaidis vs Georgios Haidaridis
10th Open Kavala GRE round 1 2001.08.21
French Defense 1-0

Ioannis Nikolaidis vs Baadur Aleksandrovich Jobava
Yerevan zt 1.5 Yerevan round 5 2000.06.07
King’s Indian Defense: Makogonov Variation 1-0

Ioannis Nikolaidis vs Ilya Yulyevich Smirin
ECC Panormo GRE round 3 2001.09.25
King’s Indian Defense 0-1

Spyridon Skembris vs Ioannis Nikolaidis
GRE-ch Athens GRE round 1 2004.12.04
Scandinavian Defense 1/2-1/2

Ioannis Nikolaidis vs Anar Allahverdiyev
2nd Porto Carras International Open Porto Carras GRE round 6 2005.04.26
Nimzo-Indian Defense: Classical Variation, Berlin Variation, Macieja System 1-0

Grigory Yuryevich Serper vs Ioannis Nikolaidis
St. Petersburg Open St. Petersburg RUS 1993.??.??
King’s Indian Defense: Accelerated Averbakh Variation 1-0