{
  "id": 14395874,
  "title": "I built a zero-backend chess audit tool using Stockfish WASM and client-side processing",
  "url": "https://urgent.news/2026/10/14/i-built-a-zero-backend-chess-audit-tool-using-stockfish-wasm-and",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-14T07:49:12.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/peaceful_hours_bf2345026c/i-built-a-zero-backend-chess-audit-tool-using-stockfish-wasm-and-client-side-processing-5069"
  },
  "original_language": "en",
  "account": "Hey dev.to community! I'm excited to share a browser-based tool I recently created called Chess Blunder Heatmap. This application doesn't focus on analyzing individual game moves, but rather aggregates a player's game history to create a broad overview of weak board squares and a breakdown of game phases (opening, middlegame, and endgame).\n\nThe tech stack for this project includes clean client-side JavaScript hosted on Vercel for the frontend, while the Stockfish WASM engine runs directly in the browser for the engine component. Interestingly, there's no backend involved, as all processing takes place locally on the user's client-side.\n\nThe reason for utilizing WebAssembly and client-side processing is to eliminate server costs altogether, as the engine evaluations are offloaded to the user's device. Additionally, this approach enhances privacy and provides a seamless user experience, as users only need to enter their Chess.com username and run the audit without creating an account or logging in.\n\nThe app offers several features, including a visual board heatmap that highlights the exact squares where blunders occur over time. It also provides phase performance metrics for opening, middlegame, and endgame phases. Users can even conduct instant tests using famous profiles, such as testing Hikaru to uncover a GM's blind spots.\n\nYou can check out the live tool at https://chess-blunder-heatmap.vercel.app/. I'm eager to hear your thoughts and feedback regarding performance, WASM execution limits, or any suggestions for improving the UI/UX.",
  "summary": "Hey dev.to community! 👋 I wanted to share a browser-based tool I recently built: Chess Blunder Heatmap. Instead of focusing on single-game move-by-move engine analysis, the app aggregates a player’s game history to generate a macro-level heatmap of weak board squares and a phase breakdown (opening, middlegame, endgame). 🛠️ The Tech Stack & Architecture Frontend: Clean client-side JavaScript…",
  "key_points": [
    "Chess Blunder Heatmap tool aggregates player game history",
    "Stockfish WASM engine runs client-side in browser",
    "No backend required, all processing occurs locally"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}