Peter Ralbovsky
Timeline
| Contest | 2013 | 2014 | 2015 | 2016 | 2017 |
|---|---|---|---|---|---|
| Worldwide High School and Collegiate Onsites: | |||||
| IOI | 247 | 159 | 
112
|
129
|
80
|
- — competition hasn't been held that year, or wasn't an international championship, or we have no info about it
F — participated in the final event, but the rank is unknown
Q — qualified to the final event but hasn't participated in it
Q* — qualified to the final event only after some other contestant refused to participate