Stuff I read last week

About: A collection of links and short commentary, published weekly. In theory the inclusion criteria are for it to be something I read last week (duh) and was either particularly interesting or something I might want to refer to later. Subscribe with RSS or see my main blog for long-form writing.

2018-09-03

On the difficulty of nonograms
An algorithm for computing a difficulty rating for a nonogram.
Survey of Paint-by-Number Puzzle Solvers
A comparison of a bunch of nonogram solvers and the implementation strategies.
Advanced [Nonogram] Solving Techniques
The strategies a human would use for solving Nongrams.
Service provider story about tracking down TCP RSTs
A good network debugging story. Why are a couple of content providers / CDNs responding to some customers of an operator with an RST, while other customers of the same operator had no problems?
The History of a Security Hole
Archaeology into an embarrassing looking security issue in OpenBSD (x86-only). How a series of superficially safe looking transformations into a struct definition first created a tiny crack, and then later widened the hole.

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