---
title: "Discussion on \"N-Queens Is Just Subsets With One Extra Line\n\" | Hashnode"
description: "Discussion on \"N-Queens Is Just Subsets With One Extra Line\n\". N-Queens, Sudoku and subsets are the same backtracking template. The only difference is one pruning line, and here's how to see it."
url: "https://hashnode.com/posts/n-queens-is-just-subsets-with-one-extra-line/6a44e9a744e24959d0637eea"
---

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# [N-Queens Is Just Subsets With One Extra Line](https://alexmateo.hashnode.dev/n-queens-is-just-subsets-with-one-extra-line?utm_source=hashnode&utm_medium=feed)

N-Queens, Sudoku and subsets are the same backtracking template. The only difference is one pruning line, and here's how to see it.

Jul 1 · 4 min read · alexmateo.hashnode.dev  
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## Written by

[Alex Mateo](https://hashnode.com/@alexmateo)

@alexmateo · Madrid, Spain

  
[View profile](https://hashnode.com/@alexmateo)

Software Engineer from Madrid, Spain. Founder of Expora.

I’m a software engineer who cares less about clever code — and more about systems that keep working when reality changes. Most of my professional work has been in .NET / C#, building and refactoring real production systems: APIs, legacy platforms, data pipelines, and cloud infrastructure.

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