Free Instructive Chess books/Articles

 Openings

TheBishop's Opening and The Urusov Gambit System by Michael Goeller

ScotchGambit Miniatures in cbv

CochraneGambit Miniatures in cbv Petrov's Defence

EvansGambit Miniatures in CBV

Chess Computer Programing

Programmer'sgambit
The History Heuristic and Alpha-Beta Search Enhancements in Practice -by - Jonathan Schaeffer
Detecting Fortresses in Chess , Matej Guid, Ivan Bratko
ArtificialIntelligience for Chess Reduction  by Annelie Heuser 
Knowledge engineering in chess programming

 Training

Move2... A Chess coaching course for children

ChessTeaching Manual

ReviewingExpert Chess Performance

Two ReadersEndgame Blindfold Training by Dimosthenis Michailidis

Tactic Master (mini book) by Dimosthenis Michailidis

Blindfold Chess essential training by Dimosthenis Michailidis

Multilingual Chess Terminology - a Synchronic and Diachronic Perspective by dr Marii Bloch-Trojnar

  Great Players

The Satirist and the Engineer (an article about "The Magician from Riga"

  Collection of Instructive/Annotated games

AllChess Olympiads 1924-2012+Selected Annotated in chessbase format

BobbyFischer database
 Collection of Best Annotated Games

 Online chess Resources Gre

Linksto Online chess Resources by Michael Goeller

Linksto Online chess Resources by me

 Others

Old chess books TheWhite Chess Collection

Mastersof our time : Impatience and Self-Control in High Level Games on genderdifferences

A brighter future for Soviet Computer Chess ? by Tony Marsland

Chess Masterpieces

The Art of Chess Artists

 Computational Aesthetics and Chess as an Art Form