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Beginner

Beginner

Beginner

Solidity: Beginner

Your first step to ace the Solidity coding interview.
FizzBuzz is one of the most infamous coding challenges to quickly screen off candidates.

Solidity: Intermediate

Will you be able to calculate the sum of all even Fibonacci numbers up to 4000000 or you will push the EVM to its knees?

Solidity: Intermediate

Sieve of eratosthenes, Sieve of Atkin, your choice.
In this challenge you will test your prime factorization skills in Solidity.

Lisk: Intermediate

The contract in this challenge contains a severe vulnerability. Your mission is to both identify and fix it.