Puzzlelair

Puzzle Lair brings Sudoku, Killer Sudoku, Calcudoku, X-Sudoku, Kakuro, Ripple Effect, Crossmath and Nonogram together in one clean, free site. Solve daily logic puzzles, track your stats and climb the leaderboards.

Games

Added June 22, 2026 · Last analysed June 22, 2026 · via Hacker News · also on Product Hunt

Own this Launch?

StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 22 June 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.

Puzzlelair ships with the launch fundamentals in place, with a thorough launch checklist and clean crawl signals. What needs work: missing Permissions-Policy and Content-Security-Policy, incomplete legal pages, and tracking cookies set before any opt-in.

Launched on Hacker News on June 22, 2026. The site is hosted on N6 Cloud inc. in the United States, with a domain registered 4 weeks before launch. We've detected 11 technologies on this site, covering analytics, backend framework, CSS frameworks, and developer tools. The stack includes Tailwind CSS, Brevo, and Google Analytics.

It's running the same core stack as 7,710 other launches and tighter on security headers than most Hacker News launches.

If you own this site, refresh the snapshot and see the full fix list any time →

8.1

StackScope Score

Excellent

100/100 Launch Readiness

Launch ready

4/6 Security Headers

Decent

2/3 Legal

Partial

2/2 Crawl files

Complete

93/100 Performance

Fast

Vibe Score 0 · No AI signals

How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (11)

Infrastructure

DNS	Namecheap DNS
Security	HSTS
Server	nginx

Email forwarding	Namecheap Email Forwarding (2)
Email marketing	Brevo

Build & Framework

CSS framework	Tailwind CSS
Developer tools	Vite

Analytics & Marketing

Analytics	Google Analytics (3)
SEO	Google Search Console
Tag management	Google Tag Manager

Other

Backend framework	Rails (2)

Infrastructure

Network

N6CLOUD-AS - N6 Cloud inc., CA

AS14217 · US

DNS

Namecheap DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

Green hosting

Not green hosted

No green-energy record. Data from The Green Web Foundation.

SSL Certificate

Let's Encrypt

Valid 24 May 2026 to 22 Aug 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

3 months

Registered May 2026 · NameCheap, Inc.

Email Security

✓

SPF ~all Soft-fail (~all). Common and accepted.

✓

DKIM Detected via known email provider

✗

DMARC p=none None (p=none). Monitoring only.

MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.

TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (3)

Cookies (3)

Name	Lifetime	Detected as
_ga	1y	Google Analytics
_ga_9WQ2M5N2ES	1y	Google Analytics
_puzzle_site_session	session	-

Readiness Breakdown How?

✓ Custom title and meta description

✓ Open Graph tags (title, image, description)

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Page title is 81 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

⚠

Meta description is 214 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

636 ms Server response

23% Faster than peers

1288 ms Largest contentful paint

0.00 Cumulative layout shift

384 KB Page weight

2 Third-party domains

0 Console errors

0 Failed requests

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

AI Stance

No AI stance declared

✗ llms.txt published

✓ No AI bots blocked in robots.txt

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (24 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/privacy

? Terms of Service not detected

? Consent manager not detected

Analytics set tracking cookies on our visit, with no opt-in step.

90% unique

Mentions:

Cookies Updated: June 22, 2026

Security Headers (4/6)

✓

Referrer-Policy

✓

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✓

X-Content-Type-Options

✗

Content-Security-Policy

✓

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Build

1 JS files

2 CSS files

2 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.