Cool free chess website I found for checking blunders

@N_PRAHARSHA said ^

Found this website online that generates a blunder heatmap and phase breakdown for any Chess.com account: https://chess-blunder-heatmap.vercel.app/

It's pretty neat because it runs entirely in the browser without needing any signup or account creation. Thought I'd share it here in case anyone finds it useful.
![IMG-20261013-WA0001.jpg](https://image.lichess1.org/display?fmt=webp&h=0&op=resize&pat...

This advertising breh
And it is pretty useless it cant help u to analyze bc u need to analyze positions using ur own mind and not engine only (yes it is good to check if u were right but u can do tht in chess.com too!)

@Apogee2022 said ^

Found this website online that generates a blunder heatmap and phase breakdown for any Chess.com account: https://chess-blunder-heatmap.vercel.app/

It's pretty neat because it runs entirely in the browser without needing any signup or account creation. Thought I'd share it here in case anyone finds it useful.
![IMG-20261013-WA0001.jpg](...

Not advertising, just shared a tool I came across.

It’s actually different from standard single-game engine analysis on Chess.com—it aggregates your last 10+ games into a visual heatmap across the entire board, showing you the exact squares where you repeatedly blunder over time, along with a phase breakdown (opening/middlegame/endgame).

Chess.com doesn't give you a visual board heatmap or phase audit across multiple games without paying for premium features, so seeing pattern trends all in one place for free is pretty handy.

Its a fancy site but I don't see how heatmaps help in chess - you watch too much football