diff --git a/reasoning_gym/graphs/quantum_lock.py b/reasoning_gym/graphs/quantum_lock.py
new file mode 100644
index 00000000..d5287925
--- /dev/null
+++ b/reasoning_gym/graphs/quantum_lock.py
@@ -0,0 +1,203 @@
+from dataclasses import dataclass
+import random
+import re
+from collections import deque
+from typing import List, Optional, Tuple, Dict
+
+from ..factory import ProceduralDataset, register_dataset
+
+@dataclass
+class QuantumLockConfig:
+    """Configuration for QuantumLock task generation"""
+
+    difficulty: int = 8
+
+class QuantumLockDataset(ProceduralDataset):
+    """Generates QuantumLock tasks"""
+
+    def __init__(self, config: QuantumLockConfig):
+        self._prompt_templates = ["""\
+In front of you are some buttons, a light, and a number. The light will toggle between red and green whenever you press a button. Each button performs a mathematical operation to the number, but the operation may depend on the state of the light.
+You must press the shortest correct sequence of buttons to reach the target value.
+
+Start: {initial_value} ({initial_state})
+Target: {target_value}
+Buttons:
+{buttons}"""]
+        super().__init__(config=config)
+
+    def __getitem__(self, idx: int) -> dict:
+        """Generate a single QuantumLock task
+
+        Returns:
+            dict with keys:
+                - question: str, the task description
+                - answer: str, a solution string
+                - metadata: dict with generation parameters
+        """
+
+        puzzle_data = self.generate_quantum_puzzle(self.config.difficulty)
+
+        return {
+            "question": self.format_puzzle(random.choice(self._prompt_templates), puzzle=puzzle_data),
+            "answer": " → ".join(puzzle_data['solution']),
+            "metadata": {
+                "difficulty": self.config.difficulty,
+                "solution_path": puzzle_data['solution'],
+                "target_value": puzzle_data['target_value'],
+                "buttons": puzzle_data['buttons'],
+                "initial_state": puzzle_data['initial_state'],
+                "initial_value": puzzle_data['initial_value']
+            }
+        }
+
+    def generate_quantum_puzzle(self, difficulty=1):
+        """
+        Generates a Quantum Lock puzzle with configurable difficulty.
+        Returns a dictionary containing puzzle parameters and solution.
+        """
+        # Define possible operations and states
+        operations = [
+            {'type': 'add', 'values': [1, 2]},
+            {'type': 'subtract', 'values': [1, 2]},
+            {'type': 'multiply', 'values': [2]}
+        ]
+
+        # Generate random buttons
+        buttons = []
+        for i in range(3):
+            op = random.choice(operations)
+            btn = {
+                'name': chr(65 + i),
+                'type': op['type'],
+                'value': random.choice(op['values']),
+                'active_state': random.choice(['any', 'green'])
+            }
+            buttons.append(btn)
+
+        # Generate target based on difficulty
+        target = random.randint(5 + 5*difficulty, 15 + 10*difficulty)
+
+        # Create puzzle structure
+        puzzle = {
+            'initial_value': 0,
+            'initial_state': 'red',
+            'target_value': target,
+            'buttons': buttons,
+            'max_steps': 8 + 2*difficulty,
+            'solution': None
+        }
+
+        # Find shortest solution using BFS
+        queue = deque([(0, 'red', [])])
+        visited = set()
+
+        while queue:
+            val, state, path = queue.popleft()
+
+            if val == puzzle['target_value']:
+                puzzle['solution'] = path
+                return puzzle
+
+            if len(path) >= puzzle['max_steps'] or (val, state) in visited:
+                continue
+
+            visited.add((val, state))
+
+            for btn in buttons:
+                next_state = 'green' if state == 'red' else 'red'
+
+                # Check if button is usable
+                if btn['active_state'] not in [state, 'any']:
+                    continue
+
+                # Calculate new value
+                try:
+                    if btn['type'] == 'add':
+                        new_val = val + btn['value']
+                    elif btn['type'] == 'subtract':
+                        new_val = val - btn['value']
+                    elif btn['type'] == 'multiply':
+                        new_val = val * btn['value']
+                except:
+                    continue  # Handle overflows if needed
+
+                queue.append((new_val, next_state, path + [btn['name']]))
+
+        # If no solution found, regenerate
+        return self.generate_quantum_puzzle(difficulty)
+
+    def score_answer(self, answer: Optional[str], entry: Dict[str, any]) -> float:
+        """Determine if the solution provided solves the task.
+        
+        The function awards 1.0 for a correct answer and less otherwise.
+        """
+        if answer == None:
+            return 0.0
+
+        # Get correct solution from metadata
+        correct_solution = entry["metadata"].get("solution_path", [])
+        
+        # Normalize both answers
+        def normalize_seq(seq):
+            """Handle both string and list inputs by converting to string first"""
+            # Convert sequence to string representation if it's a list
+            input_str = ''.join(seq) if isinstance(seq, list) else str(seq or "")
+            return [c.upper() for c in re.findall(r'[A-C]', input_str.upper())]
+        
+        user_sequence = normalize_seq(answer)
+        target_sequence = normalize_seq("".join(correct_solution))
+        
+        # Exact sequence match required
+        if user_sequence == target_sequence:
+            return 1.0
+        
+        # Partial credit for reaching target (optional)
+        final_state = self.simulate_sequence(entry["metadata"], user_sequence)
+        if final_state == entry["metadata"]["target_value"]:
+            return 0.5  # Alternative scoring option
+        
+        return 0.1
+
+    def simulate_sequence(self, metadata: Dict, sequence: List[str]) -> int:
+        """Simulate button presses to verify solutions"""
+        state = metadata["initial_value"]
+        current_color = metadata["initial_state"]
+        
+        buttons = {btn["name"]: btn for btn in metadata["buttons"]}
+        
+        for btn_char in sequence:
+            btn = buttons.get(btn_char.upper())
+            if not btn:
+                continue
+                
+            # Check button availability
+            if btn["active_state"] not in [current_color, "any"]:
+                continue
+                
+            # Apply operation
+            if btn["type"] == "add":
+                state += btn["value"]
+            elif btn["type"] == "subtract":
+                state -= btn["value"]
+            elif btn["type"] == "multiply":
+                state *= btn["value"]
+                
+            # Toggle color state
+            current_color = "green" if current_color == "red" else "red"
+        
+        return state
+
+    def format_puzzle(self, template, puzzle: dict) -> str:
+        return template.format(
+            initial_value=puzzle['initial_value'],
+            initial_state=puzzle['initial_state'],
+            target_value=puzzle['target_value'],
+            buttons='\n'.join(
+                f"{btn['name']}: {btn['type'].title()} {btn['value']} (when {btn['active_state']})"
+                for btn in puzzle['buttons']
+            )
+        )
+
+# Register the dataset
+register_dataset("QuantumLock", QuantumLockDataset, QuantumLockConfig)
diff --git a/tests/test_quantum_lock.py b/tests/test_quantum_lock.py
new file mode 100644
index 00000000..7313980b
--- /dev/null
+++ b/tests/test_quantum_lock.py
@@ -0,0 +1,26 @@
+from magiccube.cube import Cube
+from reasoning_gym.graphs.quantum_lock import QuantumLockConfig, QuantumLockDataset
+
+
+def test_quantumlock_items():
+    """Test basic properties and solution of generated items"""
+    config = QuantumLockConfig(
+        difficulty=3,
+    )
+    dataset = QuantumLockDataset(config)
+
+    for item in dataset:
+        assert isinstance(item, dict)
+        assert "question" in item
+        assert "answer" in item
+        assert "metadata" in item
+
+        # Check metadata contains required fields
+        assert "solution_path" in item["metadata"]
+        assert "difficulty" in item["metadata"]
+
+        print(item['question'])
+        print(item['answer'])
+
+        assert dataset.score_answer(answer=item['metadata']['solution_path'], entry=item) == 1.0
+        assert dataset.score_answer(answer=None, entry=item) == 0.0