This online tool can be used to download (extract) captions / subtitles from YouTube in the language of your choice and formats such as plain text, vtt or srt.
Find solution to a knight's tour problem starting with any position.
A simple 9x9 Sudoku Solver tool using backtracking. The current version runs on Python.
A very beautiful, counterintuitive and yet so simple puzzle! Have a look here, and see for yourself intuitively why it works.
A demo tool for scraping share prices from Google Finance.
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