What are some good resources for writing a chess engine?

Question

I'm interested in writing a chess engine (mostly as a learning exercise) and would be interested in any resources that people know of that could be of interest or use, anything really: Papers, Books, Theory, Tutorials, anything that could be useful.

Answer 1

From my archives:

• This is a useful chess programming wiki.
• This is a simple introduction to chess programming.
• This is a (free) book on chess algorithms.
• This contains several easy step-by-step YouTube tutorial series' ranging from beginner to advanced level.
• This is a more advanced introduction.
• This is Adam Berent's interesting computer chess blog.
• This is a good analysis of MTD(f), an interesting search algorithm.
• This is a good guide to validation of move generation.
• This is lots of good information on the Rebel chess engine.
• This is lots of good information on the Dark Thought chess engine.
• Good information and source code for the Monsoon chess engine.
• These are more notes on chess programming.
• A reasonable introduction to rotated bitboards.
• A reasonable introduction to magic bitboards.
• A reasonable introduction to late move reductions.
• A look at null-move pruning.
• A collection of position sets for testing purposes.
• Here is an old report from 2 students who wrote a chess program.
• A bunch of miscellaneous chess programming links.
• Finally, here is Wikipedia's take on computer chess.