WARNING React Developers Are Failing Machine Coding Rounds Because of This One Thing

Описание: Build a complete Sudoku Game in React from scratch + Solver using Backtracking Algorithm!
In this video, I walk you through the entire logic behind generating a valid Sudoku board, removing cells for the puzzle, validating player inputs, and solving it efficiently using backtracking + set-based lookup optimisation.

Whether you are preparing for frontend interviews, machine coding rounds, React projects, or want to improve DSA with real UI, this tutorial will help you level up your skills.

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What you’ll learn in this video

✔ Generate a fully valid Sudoku grid
✔ Place & validate numbers using Sets (O(1) lookups)
✔ Backtracking algorithm to auto-solve Sudoku
✔ Remove random cells to create playable board
✔ Handle user inputs + prevent invalid moves
✔ Build full playable Sudoku UI in React

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🧠 Tech used
• React JS
• JavaScript
• Backtracking
• Data Structures (Set, 2D Array)

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Perfect for
• Frontend interview preparation
• Machine coding rounds
• React project ideas
• Students & developers improving problem-solving


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