diff --git a/sounds/blunder/tts_what_a_blunder.mp3 b/sounds/blunder/tts_what_a_blunder.mp3
new file mode 100644
index 0000000..a28a064
Binary files /dev/null and b/sounds/blunder/tts_what_a_blunder.mp3 differ
diff --git a/sounds/illegal/alarm.mp3 b/sounds/illegal/alarm.mp3
new file mode 100644
index 0000000..7462201
Binary files /dev/null and b/sounds/illegal/alarm.mp3 differ
diff --git a/src/blunderboard/blunderboard.py b/src/blunderboard/blunderboard.py
index ed923da..2291ba1 100644
--- a/src/blunderboard/blunderboard.py
+++ b/src/blunderboard/blunderboard.py
@@ -28,7 +28,7 @@ settings = {
     "NNUE": "true",
 }
 
-sound_path = Path("sounds")
+sound_path = Path("../../sounds")
 
 
 def play_sound() -> None:
diff --git a/src/blunderboard/blunderevaluator.py b/src/blunderboard/blunderevaluator.py
index a4be47e..5563dfc 100644
--- a/src/blunderboard/blunderevaluator.py
+++ b/src/blunderboard/blunderevaluator.py
@@ -1,6 +1,109 @@
-class BlunderEvaluator:
-    def reset(self) -> None:
-        pass
+import os
+from pathlib import Path
+from pygame import mixer
+import random
+from stockfish import Stockfish
+import time
+import movegenerator
 
-    def move(self, move: str) -> None:
-        pass
+sound_path = Path("../../sounds")
+
+
+settings = { # TODO Move to a config file
+    "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": 256,
+    # 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
+}
+
+class BlunderEvaluator:
+
+    def __init__(self, engine_settings: dict):
+        self.engine = Stockfish("/usr/bin/stockfish")
+        self.settings = engine_settings
+        self.engine.update_engine_parameters(self.settings)
+        self.current_evaluation = (
+            self.engine.get_evaluation()
+        )  # This is not necessary, now that I think about it.
+        self.evaluations: list[dict] = []
+        self.current_wdl = self.engine.get_wdl_stats()
+        self.wdls: list[tuple[int, int, int]] = []
+        self.engine.set_position()
+
+    def reset(self):
+        self.engine.set_position()
+
+    def make_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.engine.get_evaluation()
+            self.evaluations.append(self.current_evaluation)
+            self.current_wdl = self.engine.get_wdl_stats()
+            self.wdls.append(self.current_wdl)
+            print(self.current_wdl)
+            print(self.current_evaluation)
+            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!")
+        else:
+            print("Invalid move")
+            self.play_sound("illegal")
+
+    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[0]) > 300:
+                return True
+            elif abs(previous_wdl[2] - 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("sounds/" + 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()
\ No newline at end of file