| 1297 | Palindrome | Spring School Contest 2004 | 6178 | 81 |
| 1123 | Salary | Autumn School Contest 2001 | 4042 | 121 |
| 1354 | Palindrome. Again Palindrome | Spring School Contest 2005 | 3669 | 139 |
| 1635 | Mnemonics and Palindromes | USU Championship 2008 | 2058 | 197 |
| 1737 | Mnemonics and Palindromes 3 | USU Championship 2009 | 1506 | 246 |
| 1989 | Subpalindromes | Ural FU Championship 2013 | 801 | 325 |
| 1960 | Palindromes and Super Abilities | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 628 | 427 |
| 2045 | Richness of words | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 509 | 455 |
| 2040 | Palindromes and Super Abilities 2 | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 268 | 849 |
| 1761 | Binary Palindrome | USU Personal Contest 2010 | 324 | 1086 |
| 2037 | Richness of binary words | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 195 | 1152 |
| 2044 | 31 Palindromes | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 82 | 2566 |
| 1714 | Mnemonics and Palindromes 2 | NEERC 2009 Eastern Subregional | 109 | 3155 |
| 1954 | Five Palindromes | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 61 | 3834 |
| 2042 | Nikita | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 49 | 4002 |