Nuclear Sudoku is an original idea conceived by Phil Hazelton and was built inside a day with the assistance of Chris Franklin during the September 2013 hackbmth event. A case study was published by Jon Ginn of Open Device Lab Bournemouth and can be found here.
This is near-enough the original version (with minor improvements made since the hackbmth event), and with Phil's generous permission, Nuclear Sudoku is hosted here under the MIT license.
Nuclear Sudoku requires Node.js to run.
Install the dependencies and devDependencies and start the server.
$ cd nuclear-sudoku
$ npm install -d
$ npm run devFor production environments...
$ npm install --production
$ node app.jsMIT