Chess Coach
Stockfish checks every move. Claude or ChatGPT explains the key moments on a board you can explore.
Added 11 Nov 2026
Analysed 11 Nov 2026
via 
What we found
- There are no SPF or DMARC records, so anyone can send email that claims to come from this domain.
- It sends five of the six security headers we check; the missing one is Permissions-Policy.
- The page is missing Twitter card tags.
- The site is hosted on Netlify.
Built with: 4 technologies
Site checks
| Custom title and meta description | |
| Open Graph tags (title, image, description) missing og:image | |
| Canonical URL declared | |
| Responsive viewport meta tag | |
| Favicon present | |
| Semantic HTML (nav, main, article) | |
| Twitter card meta tags |
| Referrer-Policy | |
| X-Frame-Options | |
| Permissions-Policy experimental | |
| X-Content-Type-Options | |
| Content-Security-Policy | |
| Strict-Transport-Security | |
| X-XSS-Protection deprecated, not counted |
| Privacy policy /privacy | |
| Terms of service /terms | |
| Consent manager analytics set no tracking cookies on our visit (it may be opt-in) |
Mentions: Cookies, Data Controller, Do Not Sell
| robots.txt | |
| sitemap.xml 11 URLs | |
| security.txt optional | |
| llms.txt | |
| ads.txt only for ad-funded sites | |
| humans.txt optional |
| llms.txt published | |
| No AI bots blocked in robots.txt | |
| Content-Signal none declared | |
| Link headers none advertised |
| State | Record | Status |
|---|---|---|
| SPF | Not published | |
| DMARC | Not published | |
| DKIM | Not found at common selectors | |
| MTA-STS | Not deployed | |
| TLS-RPT | Not configured |
Without SPF and DMARC, anyone can send email that claims to come from this domain. Those two are the records to add first.
Hosting and network
| Network | AMAZON-02 - Amazon.com, Inc., US AS16509, US |
|---|---|
| DNSSEC | Not enabled DNS answers are unsigned |
| Certificate | DigiCert Inc valid 16 Feb 2026 to 19 Mar 2027, as captured |
| Green hosting | No record per The Green Web Foundation |
| Page build | 7 JS files, 2 CSS files 4 third-party domains, code splitting |
| Brand colours |
Storage: 1 item
| Key | Size | Set by |
|---|---|---|
| chess-coach:review:chesscom:ae48ac2f-d650-11ee-9ba3-6cfe544c0428 | 120 B | - |
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 358 ms | good, faster than 39% of sites |
| Largest contentful paint | 916 ms | good |
| Layout shift | 0.05 | good |
| Page weight | 1.1 MB | fair |
| Image weight | 8 KB | light |
| Images | 8 | 6 larger than shown, 7 without alt text |
| Third-party domains | 4 | |
| Console errors | 0 | none |
| Failed requests | 0 | none |
From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure
Notes
-
Looks AI-built: some AI signals.
How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
Which signals fired
Signal Points AI copy signals +5 AI onboarding signals +5 AI typography signals +15 AI layout signals +5 - Performance comes from one render on 11 November 2026 and will vary between visits.
How we know
FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 11 November 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.