.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+indent_style = space
+indent_size = 4
+max_line_length = 88

.gitignore

@@ -1,18 +1,3 @@
-.*.swp
-
-# Binaries for programs and plugins
-*.exe
-*.exe~
-*.dll
-*.so
-*.dylib
-blunderboard
-
-# Test binary, built with `go test -c`
-*.test
-
-# Output of the go coverage tool, specifically when used with LiteIDE
-*.out
-
-# Dependency directories (remove the comment below to include it)
-# vendor/
+/dist/
+/venv/
+*.egg-info/

blunderboard.go

@@ -1,91 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/notnil/chess"
-	"github.com/notnil/chess/uci"
-	"math"
-	"os"
-)
-
-// stolen^H^H inspired from lichess https://github.com/ornicar/lila/blob/master/modules/analyse/src/main/Advice.scala#L79
-func WinningChance(cp int) float64 {
-	winning_chance := 2 / (1 + math.Exp(-0.004 * float64(cp))) - 1
-	return winning_chance
-}
-
-func main() {
-	reader, err := os.Open("spongeboyahoy_vs_tomlx.pgn")
-	if err != nil {
-		panic(err)
-	}
-	pgn, err := chess.PGN(reader)
-	if err != nil {
-		panic(err)
-	}
-	spongeboyahoy_vs_tomlx := chess.NewGame(pgn)
-	fmt.Println(spongeboyahoy_vs_tomlx)
-
-	engine, err := uci.New("stockfish")
-	if err != nil {
-		panic(err)
-	}
-	defer engine.Close()
-
-	if err := engine.Run(uci.CmdUCI, uci.CmdIsReady, uci.CmdUCINewGame); err != nil {
-		panic(err)
-	}
-
-	game := chess.NewGame()
-//	prevprev_winning_chance := 0.0
-	prev_winning_chance := 0.0
-	for game.Outcome() == chess.NoOutcome {
-		num_of_moves := len(game.Moves())
-		if err := engine.Run(uci.CmdPosition{Position: game.Position()}, uci.CmdGo{Depth: 12}); err != nil {
-			panic(err)
-		}
-		search_results := engine.SearchResults()
-		cp := search_results.Info.Score.CP
-		if (num_of_moves % 2 == 1) {
-			cp *= -1
-		}
-		winning_chance := WinningChance(cp)
-		if (num_of_moves > 0) {
-			delta := prev_winning_chance - winning_chance
-			if (num_of_moves % 2 == 0) {
-				delta *= -1;
-			}
-			if delta > 0.3 {
-				fmt.Print("B-b-b-blunder!!")
-			} else if delta > 0.2 {
-				fmt.Print("That was a mistake.")
-			} else if delta > 0.1 {
-				fmt.Print("Meh...")
-			} else {
-				fmt.Print("Ok")
-			}
-			fmt.Printf(" (%0.2f, %0.2f, %0.2f)\n", float64(cp) / 100, winning_chance, -delta)
-		}
-//		prevprev_winning_chance = prev_winning_chance
-		prev_winning_chance = winning_chance
-//		fmt.Println(game.Position().Board().Draw())
-//		fmt.Println("Score (centipawns):", cp, "Winning chance:", winning_chance, "Best Move: ", search_results.BestMove)
-//		fmt.Println("Move: ", search_results.BestMove)
-		move := spongeboyahoy_vs_tomlx.Moves()[num_of_moves]
-		fmt.Print(num_of_moves / 2 + 1, move, "\t")
-		if err := game.Move(move); err != nil {
-			panic(err)
-		}
-//		for {
-//			var move string
-//			fmt.Print("Move: ")
-//			fmt.Scanln(&move)
-//			if err := game.MoveStr(move); err == nil {
-//				break
-//			}
-//			fmt.Println("Illegal move!")
-//		}
-	}
-	fmt.Println(game.Outcome())
-	fmt.Println(game.Position().Board().Draw())
-}

deploy.sh

@@ -0,0 +1,10 @@
+set -e
+[ -d venv ] || virtualenv venv
+. venv/bin/activate
+pip install build tox
+tox
+python -m build
+ssh pi@blunderboard.igloo.icmp.camp rm -f 'blunderboard-*.whl'
+scp dist/blunderboard-*.whl pi@blunderboard.igloo.icmp.camp:
+ssh pi@blunderboard.igloo.icmp.camp blunderboard/venv/bin/pip uninstall -y blunderboard
+ssh pi@blunderboard.igloo.icmp.camp blunderboard/venv/bin/pip install 'blunderboard-*.whl'

go.mod

@@ -1,3 +0,0 @@
-module git.0x90.space/0x90/blunderboard
-
-require github.com/notnil/chess v1.5.0

go.sum

@@ -1,3 +0,0 @@
-github.com/ajstarks/svgo v0.0.0-20200320125537-f189e35d30ca/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
-github.com/notnil/chess v1.5.0 h1:BcdmSGqZYhoqHsAqNpVTtPwRMOA4Sj8iZY1ZuPW4Umg=
-github.com/notnil/chess v1.5.0/go.mod h1:cRuJUIBFq9Xki05TWHJxHYkC+fFpq45IWwk94DdlCrA=

pyproject.toml

@@ -0,0 +1,6 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel"
+]
+build-backend = "setuptools.build_meta"

request_test.py

@@ -0,0 +1,44 @@
+import requests
+
+# Replace YOUR_API_TOKEN with the API token you are using for authentication
+API_TOKEN = "blunderboard-security-token"
+
+# Set the API endpoint URL
+url = "http://5.75.138.151:5000/api/get_evaluation"
+wdl_api = "http://5.75.138.151:5000/api/get_wdl"
+
+# Set the chess position and search depth
+data = {
+    "position": "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
+    "depth": 20,
+}
+
+# Set the API token in the request header
+headers = {"Authorization": API_TOKEN}
+
+# Send a POST request to the API endpoint
+response = requests.post(url, json=data, headers=headers)
+
+# Print the response content from the server
+if response.status_code == 200:
+    print(response.json())
+
+else:
+    print("Error: " + response.json()["error"])
+
+
+def api_wdl() -> str:
+    """
+    Returns the current wdl from the REST API
+    :return: str
+    """
+    # Send a POST request to the API endpoint
+    response2 = requests.post(wdl_api, json=data, headers=headers)
+    if response2.status_code == 200:
+        return response2.json()
+    else:
+        print("API Error: " + response2.json()["error"])
+        return "API Error"
+
+
+print(api_wdl())

rest_api.py

@@ -0,0 +1,65 @@
+from flask import Flask, request, jsonify
+from stockfish import Stockfish
+
+app = Flask(__name__)
+
+# Replace YOUR_API_TOKEN with the API token you want to use for authentication
+API_TOKEN = "blunderboard-security-token"
+
+default_engine_settings = {
+    "Debug Log File": "stocklog.txt",
+    "Contempt": 0,
+    "Min Split Depth": 0,
+    "Threads": 2,
+    # More threads will make the engine stronger, but should be kept at less than
+    # the number of logical processors on your computer.
+    "Ponder": "false",
+    "Hash": 516,
+    # Default size is 16 MB. It's recommended that you increase this value, but keep
+    # it as some power of 2. E.g., if you're fine using 2 GB of RAM, set Hash to
+    # 2048 (11th power of 2).
+    "MultiPV": 1,
+    "Skill Level": 20,
+    "Move Overhead": 10,
+    "Minimum Thinking Time": 5,
+    "Slow Mover": 100,
+    "UCI_Chess960": "false",
+    "UCI_LimitStrength": "false",
+    "UCI_Elo": 1350,
+    # "NNUE": "true", # TODO Find out if NNUE can be used with the python wrapper
+}
+
+# Create a Stockfish chess engine instance
+engine = Stockfish(path="/usr/bin/stockfish")
+
+# Set the engine settings
+engine.update_engine_parameters(default_engine_settings)
+
+
+@app.route("/api/get_evaluation", methods=["POST"])
+def get_evaluation():
+    # Get the API token from the request header
+    token = request.headers.get("Authorization")
+
+    # If the API token is not provided or is invalid, return an error
+    if token != API_TOKEN:
+        return jsonify({"error": "Invalid API token"}), 401
+
+    # Get the current chess position and the desired depth from the request body
+    data = request.get_json()
+    position = data.get("position")
+    depth = data.get("depth")
+
+    # Set the position and search depth in the chess engine
+    engine.set_fen_position(position)
+    engine.set_depth(depth)
+
+    # Get the evaluation in centipawns
+    evaluation = engine.get_evaluation()
+
+    # Return the evaluation to the client
+    return evaluation
+
+
+if __name__ == "__main__":
+    app.run(host="")

setup.cfg

@@ -0,0 +1,70 @@
+[metadata]
+name = blunderboard
+version = 0.0.1
+author = 0x90.space
+author_email = people@schleuder.0x90.space
+description = Blunderboard
+url = https://git.0x90.space/0x90/blunderboard
+project_urls =
+    Bug Tracker = https://git.0x90.space/0x90/blunderboard/issues
+classifiers =
+    Programming Language :: Python :: 3 :: Only
+    License :: OSI Approved :: ISC License (ISCL)
+    Operating System :: POSIX :: Linux
+    Topic :: Games/Entertainment :: Board Games
+
+[options]
+package_dir =
+    = src
+packages = find:
+python_requires = >=3.9
+install_requires =
+    pygame
+    RPi.GPIO
+    stockfish
+    requests
+
+[options.packages.find]
+where = src
+
+[options.data_files]
+share/blunderboard/sounds/blunder =
+    sounds/blunder/tts_what_a_blunder.mp3
+    sounds/blunder/ZONK.mp3
+share/blunderboard/sounds/illegal =
+    sounds/illegal/alarm.mp3
+
+[options.entry_points]
+console_scripts =
+    blunderboard = blunderboard:main
+
+[tox:tox]
+envlist = lint
+isolated_build = True
+
+[testenv:lint]
+skip_install = True
+deps =
+    black
+    flake8
+    mypy
+commands =
+    black --check --diff src
+    flake8 src
+    mypy src
+
+#[testenv]
+#deps =
+#    pytest
+#commands =
+#    pytest tests
+
+[flake8]
+max_line_length = 88
+extend_ignore = E203
+
+[mypy]
+check_untyped_defs = True
+ignore_missing_imports = True
+install_types = True
+non_interactive = True

src/blunderboard/__init__.py

@@ -0,0 +1,24 @@
+from blunderboard.blunderevaluator import BlunderEvaluator
+from blunderboard.boardreader import BoardReader
+from blunderboard.movegenerator import MoveGenerator
+import cProfile
+from pstats import SortKey
+from time import sleep
+
+
+def main_content():
+    try:
+        blunder_evaluator = BlunderEvaluator()
+        move_generator = MoveGenerator(blunder_evaluator)
+        reader = BoardReader(move_generator)
+        reader.scan()
+        reader.print()
+        while True:
+            reader.scan()
+            sleep(0.1)
+    except KeyboardInterrupt:
+        pass
+
+
+def main():
+    cProfile.runctx("main_content()", globals(), locals(), sort=SortKey.CUMULATIVE)

src/blunderboard/blunderevaluator.py

@@ -0,0 +1,148 @@
+import os
+from pathlib import Path
+from pygame import mixer
+import random
+from stockfish import Stockfish
+import sys
+import requests
+
+API_TOKEN = "blunderboard-security-token"
+sound_path = Path(sys.prefix) / "share" / "blunderboard" / "sounds"
+api = "http://5.75.138.151:5000/api/get_evaluation"
+wdl_api = "http://5.75.138.151:5000/api/get_wdl"
+
+
+class BlunderEvaluator:
+    default_engine_settings = {
+        "Debug Log File": "stocklog.txt",
+        "Contempt": 0,
+        "Min Split Depth": 0,
+        "Threads": 1,
+        # More threads will make the engine stronger, but should be kept at less than
+        # the number of logical processors on your computer.
+        "Ponder": "false",
+        "Hash": 16,
+        # Default size is 16 MB. It's recommended that you increase this value, but keep
+        # it as some power of 2. E.g., if you're fine using 2 GB of RAM, set Hash to
+        # 2048 (11th power of 2).
+        "MultiPV": 1,
+        "Skill Level": 20,
+        "Move Overhead": 10,
+        "Minimum Thinking Time": 20,
+        "Slow Mover": 100,
+        "UCI_Chess960": "false",
+        "UCI_LimitStrength": "false",
+        "UCI_Elo": 1350,
+        # "NNUE": "true", # TODO Find out if NNUE can be used with the python wrapper
+    }
+
+    def __init__(self, engine_settings: dict = default_engine_settings):
+        self.engine = Stockfish()
+        self.settings = engine_settings
+        self.engine.update_engine_parameters(self.settings)
+        self.engine.set_position()
+        self.current_evaluation = self.api_evaluation()
+        self.evaluations: list[dict] = []
+        self.current_wdl = self.api_wdl()
+        self.wdls: list = []
+        self.current_fen = self.engine.get_fen_position()
+        self.white_to_move = True
+
+    def reset(self):
+        self.engine.set_position()
+        self.white_to_move = True
+
+    def move(self, move) -> None:
+        """
+        Makes a move on the board and updates the game state
+        :param move: str
+        :return: None
+        """
+        if self.engine.is_move_correct(move):
+            self.engine.make_moves_from_current_position([move])
+            self.current_evaluation = self.api_evaluation()
+            self.evaluations.append(self.current_evaluation)
+            self.current_wdl = self.api_wdl()
+            self.wdls.append(self.current_wdl)
+            print(self.current_wdl)
+            print(self.current_evaluation)
+            print(self.get_board())
+            if self.move_was_blunder():
+                # If the played move was a blunder play a random sound from the blunder
+                # path
+                self.play_sound("blunder")
+                print("Blunder!")
+            if self.white_to_move:
+                self.white_to_move = False
+            elif not self.white_to_move:
+                self.white_to_move = True
+        else:
+            print("Invalid move")
+            self.play_sound("illegal")
+
+    def api_evaluation(self) -> dict:
+        """
+        Returns the current evaluation from the REST API
+        :return: str
+        """
+        data = {"position": self.engine.get_fen_position(), "depth": 20}
+        # Set the API token in the request header
+        headers = {"Authorization": API_TOKEN}
+        # Send a POST request to the API endpoint
+        response = requests.post(api, json=data, headers=headers)
+        if response.status_code == 200:
+            return response.json()["value"]
+        else:
+            print("API Error: " + response.json()["error"])
+            return {"NOPE": "PLEASE CRASH"}
+
+    def api_wdl(self) -> str:
+        """
+        Returns the current wdl from the REST API
+        :return: str
+        """
+        data = {"position": self.engine.get_fen_position(), "depth": 20}
+        # Set the API token in the request header
+        headers = {"Authorization": API_TOKEN}
+        # Send a POST request to the API endpoint
+        response = requests.post(wdl_api, json=data, headers=headers)
+        if response.status_code == 200:
+            return response.json()
+        else:
+            print("API Error: " + response.json()["error"])
+            return "API Error"
+
+    def move_was_blunder(self) -> bool:
+        """
+        Returns true if the last move was a blunder
+        :return: bool
+        """
+        if len(self.wdls) > 1:  # Don't check for blunders on the first move
+            previous_wdl = self.wdls[len(self.evaluations) - 2]
+            if abs(previous_wdl[0] - self.current_wdl[2]) > 300:
+                return True
+            else:
+                return False
+        return False
+
+    @staticmethod
+    def play_sound(move_type: str) -> None:
+        """
+        Plays a random sound for the type of move (blunder, illegal)
+        :param move_type: str
+        :return: None
+        """
+        path = sound_path / move_type
+        mixer.init()
+        mixer.music.load(path / random.choice(os.listdir(path)))
+        mixer.music.play()
+        # while mixer.music.get_busy():
+        #     time.sleep(0.)
+        # I guess we won't want this, since it will block the main thread.
+
+    def get_board(self) -> str:
+        """
+        Returns the current board state
+        :return: str
+        """
+        return self.engine.get_board_visual()

src/blunderboard/boardreader.py

@@ -0,0 +1,123 @@
+from blunderboard.movegenerator import MoveGenerator
+import RPi.GPIO as gpio
+
+
+class BoardReader:
+    hysteresis = 8
+    default_gpio_mode = gpio.BCM
+    default_row_gpios = [4, 5, 6, 12, 13, 16, 17, 19]
+    default_column_gpios = [20, 21, 22, 23, 24, 25, 26, 27]
+
+    def __init__(
+        self,
+        move_generator: MoveGenerator,
+        row_gpios: list[int] = default_row_gpios,
+        column_gpios: list[int] = default_column_gpios,
+        gpio_mode=default_gpio_mode,
+    ):
+        gpio.setmode(gpio_mode)
+        gpio.setup(column_gpios, gpio.IN, pull_up_down=gpio.PUD_DOWN)
+        gpio.setup(row_gpios, gpio.OUT, initial=gpio.LOW)
+        self.column_gpios = column_gpios
+        self.row_gpios = row_gpios
+        self.board_history: list[list[list[str]]] = []
+        for _ in range(self.hysteresis):
+            self.board_history.append(self._initial_board())
+        self.move_generator = move_generator
+
+    def __del__(self):
+        gpio.cleanup()
+
+    def _empty_board(self) -> list[list[str]]:
+        board = []
+        for i in range(8):
+            board.append([" "] * 8)
+        return board
+
+    def _initial_board(self) -> list[list[str]]:
+        board = []
+        for i in range(2):
+            board.append(["x"] * 8)
+        for i in range(2, 6):
+            board.append([" "] * 8)
+        for i in range(6, 8):
+            board.append(["x"] * 8)
+        return board
+
+    def _is_initial_board(self, board) -> bool:
+        initial_board = self._initial_board()
+        for i, row in enumerate(board):
+            for j, field in enumerate(row):
+                if field != initial_board[i][j]:
+                    return False
+        return True
+
+    def scan(self) -> None:
+        next_board = self._empty_board()
+        for i, row_gpio in enumerate(self.row_gpios):
+            gpio.output(row_gpio, gpio.HIGH)
+            for j, column_gpio in enumerate(self.column_gpios):
+                if gpio.input(column_gpio):
+                    next_board[i][j] = "x"
+            gpio.output(row_gpio, gpio.LOW)
+        self.board_history = [next_board] + self.board_history[:-1]
+
+        # if the oldest half of the board history is not in inital position but all
+        # newer boards are, reset game state
+        for board in self.board_history[self.hysteresis // 2 :]:
+            if self._is_initial_board(board):
+                break
+        else:
+            for board in self.board_history[: self.hysteresis // 2]:
+                if not self._is_initial_board(board):
+                    break
+            else:
+                self.print()
+                self.move_generator.reset()
+                return
+
+        for i in range(8):
+            for j in range(8):
+                # if the oldest half of the board history has a piece but no newer
+                # boards have it, the piece was removed
+                for board in self.board_history[self.hysteresis // 2 :]:
+                    if board[i][j] == " ":
+                        break
+                else:
+                    for board in self.board_history[: self.hysteresis // 2]:
+                        if board[i][j] == "x":
+                            break
+                    else:
+                        self.print()
+                        self.move_generator.take(i, j)
+        for i in range(8):
+            for j in range(8):
+                # if the oldest half of the board history doesn't have a piece but all
+                # newer boards have it, the piece was placed
+                for board in self.board_history[self.hysteresis // 2 :]:
+                    if board[i][j] == "x":
+                        break
+                else:
+                    for board in self.board_history[: self.hysteresis // 2]:
+                        if board[i][j] == " ":
+                            break
+                    else:
+                        self.print()
+                        self.move_generator.put(i, j)
+
+    def _print(self, board) -> None:
+        print("  a b c d e f g h")
+        print(" +---------------+")
+        for i, row in reversed(list(enumerate(board))):
+            print("%d|" % (i + 1), end="")
+            for j, field in enumerate(row):
+                print(field, end="")
+                if j == 7:
+                    print("|%d" % (i + 1))
+                else:
+                    print(" ", end="")
+        print(" +---------------+")
+        print("  a b c d e f g h")
+
+    def print(self) -> None:
+        self._print(self.board_history[0])

src/blunderboard/movegenerator.py

@@ -0,0 +1,178 @@
+from blunderboard.blunderevaluator import BlunderEvaluator
+
+
+def coords_to_field(row: int, column: int):
+    columns = "abcdefgh"
+    return "%c%d" % (columns[column], row + 1)
+
+
+class MoveGenerator:
+    def __init__(self, blunder_evaluator: BlunderEvaluator):
+        self.state: State = InitState(blunder_evaluator)
+
+    def reset(self) -> None:
+        print("reset")
+        self.state = self.state.reset()
+
+    def put(self, row: int, column: int) -> None:
+        print("put %s" % coords_to_field(row, column))
+        self.state = self.state.put(row, column)
+
+    def take(self, row: int, column: int) -> None:
+        print("take %s" % coords_to_field(row, column))
+        self.state = self.state.take(row, column)
+
+
+class State:
+    def __init__(self, blunder_evaluator: BlunderEvaluator):
+        self.blunder_evaluator = blunder_evaluator
+
+    def reset(self) -> "State":
+        self.blunder_evaluator.reset()
+        return InitState(self.blunder_evaluator)
+
+    def put(self, row: int, column: int) -> "State":
+        print("ignored invalid put")
+        return self
+
+    def take(self, row: int, column: int) -> "State":
+        print("ignored invalid take")
+        return self
+
+
+class InitState(State):
+    def reset(self) -> State:
+        super().reset()
+        return self
+
+    def take(self, row: int, column: int) -> State:
+        return TakeState(self.blunder_evaluator, coords_to_field(row, column))
+
+
+class TakeState(State):
+    def __init__(self, blunder_evaluator: BlunderEvaluator, from_field: str):
+        super().__init__(blunder_evaluator)
+        self.from_field = from_field
+
+    def put(self, row: int, column: int) -> State:
+        to_field = coords_to_field(row, column)
+        if self.from_field == to_field:
+            print("ignored self-move")
+            return InitState(self.blunder_evaluator)
+        move = self.from_field + to_field
+        print("move %s" % move)
+        self.blunder_evaluator.move(move)
+        return InitState(self.blunder_evaluator)
+
+    def take(self, row: int, column: int) -> State:
+        return TakeTakeState(
+            self.blunder_evaluator, self.from_field, coords_to_field(row, column)
+        )
+
+
+class TakeTakeState(State):
+    def __init__(
+        self, blunder_evaluator: BlunderEvaluator, from_field: str, from2_field: str
+    ):
+        super().__init__(blunder_evaluator)
+        self.from_field = from_field
+        self.from2_field = from2_field
+
+    def put(self, row: int, column: int) -> State:
+        to_field = coords_to_field(row, column)
+        if self.from2_field == to_field:
+            move = self.from_field + to_field
+        elif self.from_field == to_field:
+            move = self.from2_field + to_field
+        elif (
+            self.from_field[1] == self.from2_field[1]
+            and self.from_field[1] == to_field[1]
+        ):
+            # king-side castling
+            if (
+                self.from_field in ["e1", "e8"]
+                and self.from2_field in ["h1", "h8"]
+                and to_field in ["f1", "f8", "g1", "g8"]
+            ):
+                return KingCastleState(
+                    self.blunder_evaluator, self.from_field, self.from2_field, to_field
+                )
+            # queen-side castling
+            if (
+                self.from_field in ["e1", "e8"]
+                and self.from2_field in ["a1", "a8"]
+                and to_field in ["c1", "c8", "d1", "d8"]
+            ):
+                return QueenCastleState(
+                    self.blunder_evaluator, self.from_field, self.from2_field, to_field
+                )
+            print("ignored invalid put")
+            return self
+        else:
+            print("ignored invalid put")
+            return self
+        print("move %s" % move)
+        self.blunder_evaluator.move(move)
+        return InitState(self.blunder_evaluator)
+
+
+class KingCastleState(State):
+    def __init__(
+        self,
+        blunder_evaluator: BlunderEvaluator,
+        from_field: str,
+        from2_field: str,
+        to_field: str,
+    ):
+        super().__init__(blunder_evaluator)
+        self.from_field = from_field
+        self.from2_field = from2_field
+        self.to_field = to_field
+
+    def put(self, row: int, column: int) -> State:
+        to2_field = coords_to_field(row, column)
+        if self.to_field[1] == to2_field[1]:
+            if to2_field in ["f1", "g1"]:
+                move = "e1g1"
+            elif to2_field in ["f8", "g8"]:
+                move = "e8g8"
+            else:
+                print("ignored invalid put")
+                return self
+        else:
+            print("ignored invalid put")
+            return self
+        print("move %s" % move)
+        self.blunder_evaluator.move(move)
+        return InitState(self.blunder_evaluator)
+
+
+class QueenCastleState(State):
+    def __init__(
+        self,
+        blunder_evaluator: BlunderEvaluator,
+        from_field: str,
+        from2_field: str,
+        to_field: str,
+    ):
+        super().__init__(blunder_evaluator)
+        self.from_field = from_field
+        self.from2_field = from2_field
+        self.to_field = to_field
+
+    def put(self, row: int, column: int) -> State:
+        to2_field = coords_to_field(row, column)
+        if self.to_field[1] == to2_field[1]:
+            if to2_field in ["c1", "d1"]:
+                move = "e1c1"
+            elif to2_field in ["c8", "d8"]:
+                move = "e8c8"
+            else:
+                print("ignored invalid put")
+                return self
+        else:
+            print("ignored invalid put")
+            return self
+        print("move %s" % move)
+        self.blunder_evaluator.move(move)
+        return InitState(self.blunder_evaluator)