Game of Thrones leak and watermark: a stupid tracking system

A simple watermark system that cannot be that easily defeated

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Devil Chess: a simple solution

A simple and general solution to the "Devil chess" riddle

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Python 2.x vs 3.x usage survey, 2014 edition

State of python 2.x and 3.x respective usage at the end of 2014, with comparisons to 2013

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