Server

Web interface for playing draughts games interactively.

class draughts.Server(board: BaseBoard, white_engine: Engine | None = None, black_engine: Engine | None = None)

Draughts game server with web UI.

Supports: - Human play via web interface - Single engine for computer moves - Two engines playing against each other (engine vs engine mode)

__init__(board: BaseBoard, white_engine: Engine | None = None, black_engine: Engine | None = None)

Initialize the server.

Args:

board: The initial board state white_engine: Engine to play as white (optional) black_engine: Engine to play as black (optional)

run(**kwargs)

Start the server.

Quick Start

from draughts import Board, Server, AlphaBetaEngine

board = Board()
server = Server(
    board=board,
    white_engine=AlphaBetaEngine(depth_limit=6),
    black_engine=AlphaBetaEngine(depth_limit=4)
)
server.run()  # Open http://localhost:8000

Command Line

Start directly from terminal:

python -m draughts.server.server

Engine Matches

Pit engines against each other:

from draughts import Board, Server, AlphaBetaEngine, Engine
import random

class RandomEngine(Engine):
    def get_best_move(self, board, with_evaluation=False):
        move = random.choice(list(board.legal_moves))
        return (move, 0.0) if with_evaluation else move

server = Server(
    board=Board(),
    white_engine=AlphaBetaEngine(depth_limit=6),
    black_engine=RandomEngine()
)
server.run()

Click “Auto Play” in the UI to watch the match.

Web UI Controls

• Engine Move: Play best move for current side

• Auto Play: Start/stop automatic engine play

• Undo: Take back the last move

• Copy/Load FEN: Import/export positions

• Copy/Load PDN: Import/export game notation

API Endpoints

Endpoint	Method	Description
/position	GET	Current board position
/legal_moves	GET	Legal moves for current player
/fen	GET	FEN string
/pdn	GET	PDN string
/move/{src}/{tgt}	POST	Make a move
/best_move	GET	Play engine’s best move
/pop	GET	Undo last move
/load_fen	POST	Load position from FEN
/load_pdn	POST	Load game from PDN