This is the release 1.0 of a new chess engine I wrote in C#. The intention is to provide documentation in Portuguese of the techniques in the form of comments in the source code ! I am the author of Tucano chess engine.
I used and documented most of techniques: board representation options, alpha/beta search, null move, transposition table, lmr, futility pruning, evaluation terms, etc.
The idea is to provide this material in Portuguese so other brazilian programmers can also build their own engines, since most of the chess programming information is in English. Let's say this is my "return to community initiative"

Enxadrista can be download from https://github.com/alcides-schulz/Xadrez The binary file is in the "release" section. (Xadrez = Chess)
Enxadrista is very weak, if tested it will probably take the last place in the ratings

Hope it can be useful.