3 ms·
The FEN notation(1) state of the the board is in the HTML: data-fen="7r/3k1ppp/3bpn2/1p3P2/1PbP4/2r2P2/P2K1Q1P/q5NR"> Any chess engine could load this a
by adamt 14y ago
The FEN notation(1) state of the the board is in the HTML:
data-fen="7r/3k1ppp/3bpn2/1p3P2/1PbP4/2r2P2/P2K1Q1P/q5NR">
Any chess engine could load this and solve these problems in milliseconds. Which is far easier than most captchas that require moderately sophisticated image processing.
(1) http://en.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Notation http://en.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Notatio...
- nmcfarl 14y agoIt would have been easy to have just stored that bit of session state to the server. It’d also be pretty easy to alter the HTML board to a prerendered image with imagemap click detection. At which point someones writing custom image feature detection software to break your captchas. Of course, this mainly works because of the obscurity, even with the upgrades. And since someone’s already going to have to write custom software to break this I’m not sure it’s worth it to upgrade - as I doubt it’s worth anyone’s time to do write the minimal software that needed now.