| 1020 | Rope | Autumn School Contest 2000 | 15326 | 99 |
| 1025 | Democracy in Danger | Autumn School Contest 2000 | 22756 | 67 |
| 1079 | Maximum | Winter Mathematical Festival Varna 2001 | 12214 | 110 |
| 1082 | Gaby Ivanushka | Spring School Contest 2001 | 10789 | 123 |
| 1083 | Factorials!!! | Spring School Contest 2001 | 19808 | 67 |
| 1086 | Cryptography | Spring School Contest 2001 | 12616 | 105 |
| 1197 | Lonesome Knight | Spring School Contest 2002 | 17729 | 28 |
| 1209 | 1, 10, 100, 1000... | Autumn School Contest 2002 | 14438 | 34 |
| 1264 | Workdays | Autumn School Contest 2003 | 23685 | 21 |
| 1293 | Eniya | Spring School Contest 2004 | 34508 | 15 |
| 1313 | Some Words about Sport | Ural Championship 2004. Round 1 | 14843 | 34 |
| 1319 | Hotel | Ural Championship 2004. Round 2 | 13019 | 39 |
| 1409 | Two Gangsters | Autumn School Contest 2005 | 33062 | 15 |
| 1585 | Penguins | NEERC 2007 Eastern Subregional | 11542 | 38 |
| 1877 | Bicycle Codes | Ural Regional School Programming Contest 2011 | 16808 | 19 |
| 2001 | Mathematicians and Berries | Ural Regional School Programming Contest 2013 | 12304 | 21 |
| 2012 | About Grisha N. | NEERC 2014 Eastern Subregional | 14629 | 16 |
| 2023 | Donald is a postman | NEERC 2014 Eastern Subregional | 6402 | 37 |
| 2066 | Simple Expression | Ural Regional School Programming Contest 2015 | 7874 | 27 |
| 2111 | Plato | University academic school olympiad in informatics 2019 | 2008 | 66 |
| 2138 | The Good, the Bad and the Ugly | Ural School Programming Contest 2019 | 1196 | 101 |
| 2142 | Magic | Ural School Programming Contest 2019 | 1027 | 117 |
| 2149 | Pigeonhole Principle | Ural School Programming Contest 2019 | 884 | 136 |
