From the Contents of the issue in November 2005
János Pataki: Remarks to IMO problems
Péter Csikvári: Number triplets II
Gyula Horváth, László Zsakó: Informatical Olympiad 2005
Tamás Tasnádi, Péter Vankó: Problems of the 36th IPhO (part II)
József Cserti, Oszvald Glöckler: When should we jump out from the swing to get as far as possible?