Free Sudoku Online
Play free sudoku online! Best web sudoku site with classic, killer, diagonal, hyper & jigsaw sudoku puzzles. Free sudoku games for brain training & logic puzzle solving.
Added April 13, 2026
· Last analysed April 13, 2026 · via 
· 60% unique tagline
StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 13 April 2026; the live site may have changed since.
Free Sudoku Online is largely in shape, with complete legal pages and clean crawl signals. Worth fixing first: missing several security headers, tracking cookies set before any opt-in, and no email security records.
Launched on Product Hunt on April 2, 2026. The site is served through Cloudflare. The crawl picked up 12 technologies on this site, covering analytics, CDN, CSS frameworks, and DNS providers. The stack includes Next.js, React, and Tailwind CSS.
For context, it's running the same core stack as 3,879 other launches.
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Tech Stack (12)
| CDN |
Cloudflare
(3)
|
| DNS |
Cloudflare DNS
|
| Protocol | HTTP/3 (2) |
| CSS framework |
Tailwind CSS
|
| Font |
Google Fonts
|
| Framework |
React
|
| Meta-framework |
Next.js
(3)
|
| Analytics |
Cloudflare Web Analytics
|
Google Analytics
(3)
|
|
| SEO |
Google Search Console
|
| Social |
AddToAny
(3)
|
| Tag management |
Google Tag Manager
|
Infrastructure
Email Security
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI palette signals | +5 |
| AI writing signals | +5 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.