- Adding Big Numbers
- Catching Car Mileage Numbers
- Codewars style ranking system
- Connect Four
- Decode the Morse code, advanced
- Escaping The Matrix
- Find the unknown digit
- Human readable duration format
- Last digits of N^2 == N
- Matrix Determinant
- Most frequently used words in a text
- Next bigger number with the same digits
- parseInt() reloaded
- Pyramid Slide Down
- Range Extraction
- Recover a secret string from random triplets
- Roman Numerals Helper
- Snail
- So Many Permutations!
- Strings Mix
- Strip Comments
- Sum by Factors
- Sum of Intervals
- Sum Strings as Numbers
- The observed PIN
- Twice linear