JetpackChess

Chess Board Library for Jetpack Compose \ [still in early developpement]

The initial goal of JetpackChess is to serve as an interactive board to train with puzzle or practice your opening lines.

v1.1

Move Validation added.

• Check / Checkmate / Stalemate Status update

Some performance issue during checkmate validation with latency if many pieces on the board

Puzzle Mode :

• import base position + list of moves in UCI format. Exemple : 1.e4 c6 = 'e2e4 c7c6'
• must find the next move imported to advance
• auto-play the opponent move until the end of the variation

Can be use for puzzle or opening line memory test

Scroll Mode :

• import base position + list of moves in UCI format. Exemple : 1.e4 c6 = 'e2e4 c7c6'
• can go forward and backward to see the variation from the beginning to the end

Can be use to see and study a specific opening line

Wrong Move in Puzzle Mode / Good Move in Puzzle Mode : \

Controller Documentation

PuzzleController

2 way to import a puzzle/opening

newPuzzle():

• fen: String
  • can import the initial position with const FEN_DEFAULT_POSITION or a full fen.
  • example : "2r3k1/1q3ppp/B3pbb1/2Rp4/P7/1Q2P2P/1P4P1/6K1 b - - 2 27")
• uciMoves: String
  • import all the moves in UCI Format.
  • example for 1.e4 c6 => "e2e4 c7c6"
• playerSide: PlayerColor
  • which side yoy ant to play : PlayerColor.WHITE or PlayerColor.BLACK
• firstDisplayedMove: Int
  • 0 if start at the initial position
  • 1 for starting after the first move - if testing opening for black pieces after the first white move for example

newPuzzleLichess() :

• need only fen and uciMoves
• will autodetect Side and firstDisplayedMove
• build to be used with the puzzles from the Lichess DB : https://database.lichess.org/#puzzles

Scroll

newVariation()

• fen: String,
• uciMoves: String,
• playerSide: PlayerColor
• will start at the initial position (firstDisplayedMove = 0)

Not yet implemented :

• GameController for multiplayer
• Animation when a piece move