Add guidelines for twinBASIC Monthly Challenge #3

docs/Challenges/create-a-data-viewer.md

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+---
+title: Create a Data Viewer
+parent: Challenges
+nav_order: 3
+permalink: /Challenges/3
+---
+
+# 📊 twinBASIC Monthly Challenge #3 - March
+
+**Create a Data Viewer**
+
+Build an application that reads data from a file or the system and presents it in a useful or interesting visual way.
+
+Your program should take raw or structured data and turn it into something that people can explore, analyse, or understand more easily.
+
+This could be a viewer, explorer, dashboard, inspector, or visualisation tool.
+
+Examples include (but are not limited to):
+
+- Access MDB / ACCDB file viewer
+- JSON or XML explorer
+- CSV / spreadsheet viewer
+- SQLite database browser
+- Log file viewer
+- Windows Event Log viewer
+- Windows Registry explorer
+- Image metadata (EXIF) viewer
+- Folder size visualizer
+- System metrics dashboard
+- Network data viewer
+- Binary / hex viewer
+
+Creativity is encouraged - unusual data sources or interesting visualisations are welcome.
+
+## 📦 Submission Rules
+
+- Built using twinBASIC
+- Full source code must be provided, but licence choice is unrestricted
+- Submission must be a single .twinproj file (external resource files allowed if necessary)
+- Produces a single Windows EXE
+- Runs on Windows 10 and later
+- Application must read and display data from a file, dataset, or system source
+
+❌ Not a direct or near-direct port of an existing VB6 application
+
+## 📈 Bonus Points
+
+- Interesting or complex data visualisation
+- Support for large datasets
+- Search, filtering, or navigation features
+- Use of tree views, charts, or custom visualisation
+- Use of Windows APIs or system interfaces
+- Use of newer twinBASIC features (e.g. delegates, generics)
+- Clean architecture and well-documented code
+- Polished UI and UX
+- Creative or unusual data sources
+
+## 🎁 Prize
+
+£100 twinBASIC account credit
+
+- Non-transferable
+- No cash alternative
+- Can only be used towards future twinBASIC licences
+
+## 🏆 Judging
+
+Entries will be judged across multiple categories, including:
+
+- Originality and creativity
+- Technical execution
+- Performance
+- Visual presentation
+- Code quality and structure
+- Overall polish and usefulness
+
+Bonus points may be awarded at the discretion of the twinBASIC team.
+
+Winner selected at the sole discretion of the twinBASIC team within 7 days after the entry deadline.
+
+## ⏰ Deadline
+
+Entries must be received by:
+
+🗓️ 9th April — 12:00 PM (GMT)
+
+Submissions will be locked after the deadline.