alecho/chex

A chess library.

Hi there 👋

chex's Issues

Can I Add Chess Games With full Chess Match Analysis

Is your feature request related to a problem? Please describe.
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Describe the solution you'd like
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Describe alternatives you've considered
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Additional context
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Add Player support

Is your feature request related to a problem? Please describe.
Currently, players are identified by their color atom and this is all Chex knows about.

Describe the solution you'd like
Add support for assigning arbitrary terms to each color to be used to identify players and add functions around that value. This could be a simple string, user id, session id, etc.

Describe alternatives you've considered
Make library consumers track player state and who is assigned to each color.

Additional context
https://www.theerlangelist.com/article/spawn_or_not

Create and Add Logo

Add Credo

Update README.md

Add NimbleParsec

Is your feature request related to a problem? Please describe.
Better Parser support of input.

Describe the solution you'd like
Use NimbleParsec.

Describe alternatives you've considered
Regex and Ecto changesets.

Add CONTRIBUTING.md

Add Castling Support

Castling as a move is not currently possible but the game state does know about castling rights and how and when to remove them.

Add Stalemate detection

Is your feature request related to a problem? Please describe.
Similar to #27, Chex doesn't know when a stalemate has occurred.

Describe the solution you'd like
Chex should update it's internal state and expose functions to inspect this state.

Describe alternatives you've considered
None.

Additional context
https://en.wikipedia.org/wiki/Stalemate

Premoves

Describe the solution you'd like
Ability to conditionally or unconditionally record one or more moves made during an opponents turn to be played automatically.

Describe alternatives you've considered
None

Additional context
Chess.com implements this with multiple pathways. I believe lichess has just one premove at a time.

Implement the Inspect protocol

When debugging or viewing the game state in logs with inspect it would be easier for humans to see a game board representation as opposed to a struct.

Describe the solution you'd like
Implement the Inspect protocol for %Chex.Game{}

A to_string function would work as well and could be implemented at the same time.

Additional context
https://hexdocs.pm/elixir/1.12/Inspect.html

Add a PGN parser

Add public API in Chex

new, move, in_check?, etc.

Add Checkmate detection

Is your feature request related to a problem? Please describe.
When a game ends with checkmate, Chex is unaware that a mate has occurred.

Describe the solution you'd like
Chex should update it's internal state to reflect the mate and provide public functions for checking this state.

Describe alternatives you've considered
None.

Additional context
Checkmate on Wikipedia

Change %Board{} to be a plain map

Add telemetry

Refactor Piece Behaviour API

Simplify to take a game and a square and return a list of squares. Investigate returning a MapSet.

Handle pawn promotion

Add full game tests

Add some tests to replay full famous games.