Chess Endgame Practice Against Perfect Defense
Stop reading about endgames. Play them out against an opponent that never gives up, with every mistake explained. Free, no signup.
Estimated origin: France
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 1 September 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.
Chess Endgame Practice Against Perfect Defense scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Main gaps: tracking cookies set before any opt-in and incomplete email security.
The site is hosted on Vercel, with a domain registered 8 weeks before launch. Our crawler found 16 technologies on this site, covering advertising, analytics, APIs, and CSS frameworks. The stack includes Next.js, React, and Tailwind CSS.
It's also on one of the most common stacks we track, shared by 14,755 launches and more locked down than the typical StackScope Discovery launch.
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Tech Stack (16) · Indie stack
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| Email forwarding |
Cloudflare Email Routing
(2)
|
| Transactional email |
Resend
|
| API |
DiceBear
new
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(5)
|
| UI library |
Lucide Icons
|
| Advertising |
Facebook Pixel
new
|
| Analytics |
PostHog
(6)
|
| SEO |
Google Search Console
|
| Social |
Facebook
new
|
| Forms |
Web3Forms
new
|
| Gaming | Lichess new |
Infrastructure
Email Security
Storage (7)
| Name | Lifetime | Detected as |
|---|---|---|
| chessendings-locale | 1y | - |
| ph_phc_xppqu4LAqvjbeh3vtgL4g463jzowHSofCWqKfJKMgRsq_posthog | 1y | PostHog |
| Key | Size | Detected as |
|---|---|---|
| ce:attribution:first-touch | 73 B | - |
| chessendings-language | 58 B | - |
| ph_phc_xppqu4LAqvjbeh3vtgL4g463jzowHSofCWqKfJKMgRsq_posthog | 831 B | PostHog |
| Key | Size | Detected as |
|---|---|---|
| ph_phc_xppqu4LAqvjbeh3vtgL4g463jzowHSofCWqKfJKMgRsq_posthog | 2 B | PostHog |
| ph_phc_xppqu4LAqvjbeh3vtgL4g463jzowHSofCWqKfJKMgRsq_primary_window_exists | 4 B | PostHog |
Readiness Breakdown How?
Performance How?
⚠ 1 images: 1 oversized, 1 without width/height
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 |
|---|---|
| AI palette signals | +5 |
| AI stack signals | +10 |
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.