Introduction The Sublocku challenge shows how Sudoku validation works on the Ethereum blockchain. This challenge mixes blockchain development, storage handling, and puzzle-solving code. What makes...

Looking at the Contract Let’s check out this smart contract challenge. The contract uses Solidity version 0.8.26, which means it has built-in safety features that prevent overflows and handle erro...

Introduction The Insomni’hack 2025 challenge presented a unique problem centered around regex (regular expressions). The task was to identify specific characters and emojis from a given file that m...