| [Lockdown Loss | Codechef](https://www.codechef.com/problems/ECODOWN/) |
| [Fibonacci Sum | SPOJ](https://www.spoj.com/problems/FIBOSUM/) |
| [Dracula v/s Vikral | COD, Avishkar 2017](https://www.hackerrank.com/contests/code-of-the-day-2k17/challenges/dracula-vs-vikral/problem) |
| [Done with Fibonacci | COD, Avishkar 2018](https://www.hackerrank.com/contests/code-of-the-day-2k18/challenges/done-with-fibonacci) |
| [Non-Fibonacci Number | Codechef](https://www.codechef.com/problems/PRI01) |
| [Fibo and non fibo | SPOJ](https://www.spoj.com/problems/POWFIB/) |
| [Recursive Sequence | SPOJ](https://www.spoj.com/problems/SEQ/) |
| [Arya Rage | SPOJ](https://www.spoj.com/problems/MNNITAR/) |
| [Flibonakki | SPOJ](https://www.spoj.com/problems/FLIB/) |