D4 Chess Club™
AI-powered chess training for club players. Free to start — play vs computer, analyze games, solve puzzles.
Added June 30, 2026
· Last analysed June 30, 2026 · via 
· 71% 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 30 June 2026; the live site may have changed since.
D4 Chess Club™ is largely in shape, with a thorough launch checklist, fast page loads, and clean crawl signals. Worth fixing first: missing several security headers, incomplete legal pages, and incomplete email security.
Launched on Product Hunt on June 30, 2026. The site is hosted on Vercel, with a domain registered 5 weeks before launch. The crawl picked up 11 technologies on this site, covering transactional email, CSS frameworks, DNS providers, and business email. The stack includes Next.js, React, and Tailwind CSS.
For context, it's running the same core stack as 8,975 other launches.
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Tech Stack (11) · Indie stack
| DNS |
Vercel DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| Business email |
Zoho Mail
(2)
|
| Transactional email |
Amazon SES
|
Resend
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(4)
|
Infrastructure
Email Security
Storage (0)
Readiness Breakdown How?
Performance How?
⚠ 3 images: 3 oversized, 3 without width/height
Broken first-party requests (1), worth fixing
- 404 /sitemap.xml?_rsc=5CB68i4pnAekjehf
Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| Placeholder branding | +10 |
| AI copy signals | +5 |
| AI onboarding signals | +5 |
| AI writing signals | +5 |
| AI iconography signals | +5 |
| AI stack signals | +10 |
| AI layout 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.