| 1020 | Rope | Autumn School Contest 2000 | 15753 | 100 |
| 1025 | Democracy in Danger | Autumn School Contest 2000 | 23486 | 67 |
| 1079 | Maximum | Winter Mathematical Festival Varna 2001 | 12518 | 111 |
| 1082 | Gaby Ivanushka | Spring School Contest 2001 | 10917 | 126 |
| 1083 | Factorials!!! | Spring School Contest 2001 | 20308 | 68 |
| 1086 | Cryptography | Spring School Contest 2001 | 12970 | 106 |
| 1197 | Lonesome Knight | Spring School Contest 2002 | 18381 | 28 |
| 1209 | 1, 10, 100, 1000... | Autumn School Contest 2002 | 15034 | 34 |
| 1264 | Workdays | Autumn School Contest 2003 | 24776 | 21 |
| 1293 | Eniya | Spring School Contest 2004 | 36045 | 14 |
| 1313 | Some Words about Sport | Ural Championship 2004. Round 1 | 15382 | 34 |
| 1319 | Hotel | Ural Championship 2004. Round 2 | 13482 | 39 |
| 1409 | Two Gangsters | Autumn School Contest 2005 | 34630 | 15 |
| 1585 | Penguins | NEERC 2007 Eastern Subregional | 12054 | 38 |
| 1877 | Bicycle Codes | Ural Regional School Programming Contest 2011 | 17814 | 19 |
| 2001 | Mathematicians and Berries | Ural Regional School Programming Contest 2013 | 13307 | 22 |
| 2012 | About Grisha N. | NEERC 2014 Eastern Subregional | 15831 | 17 |
| 2023 | Donald is a postman | NEERC 2014 Eastern Subregional | 6781 | 39 |
| 2066 | Simple Expression | Ural Regional School Programming Contest 2015 | 8703 | 28 |
| 2111 | Plato | University-Academy Olympiad 2019 | 2259 | 72 |
| 2138 | The Good, the Bad and the Ugly | Ural School Programming Contest 2019 | 1358 | 112 |
| 2142 | Magic | Ural School Programming Contest 2019 | 1206 | 126 |
| 2149 | Pigeonhole Principle | Ural School Programming Contest 2019 | 1020 | 149 |
