diff --git a/notebooks/test_book.ipynb b/notebooks/test_book.ipynb
deleted file mode 100644
index bbc6822..0000000
--- a/notebooks/test_book.ipynb
+++ /dev/null
@@ -1,118 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "code",
-   "id": "initial_id",
-   "metadata": {
-    "collapsed": true,
-    "ExecuteTime": {
-     "end_time": "2025-03-12T14:46:19.236991Z",
-     "start_time": "2025-03-12T14:46:19.232966Z"
-    }
-   },
-   "source": [
-    "import numpy as np\n",
-    "keypad_matrix = np.array([[1, 2, 3],\n",
-    "                          [4, 5, 6],\n",
-    "                          [7, 8, 9]])"
-   ],
-   "outputs": [],
-   "execution_count": 5
-  },
-  {
-   "metadata": {
-    "ExecuteTime": {
-     "end_time": "2025-03-12T14:46:19.249251Z",
-     "start_time": "2025-03-12T14:46:19.244635Z"
-    }
-   },
-   "cell_type": "code",
-   "source": [
-    "rng = np.random.default_rng()\n",
-    "\n",
-    "# Step 1: Get the matrix\n",
-    "keypad_view = keypad_matrix.copy()  # Using copy to simulate self.keypad_matrix()\n",
-    "print(\"Original keypad_view:\")\n",
-    "print(keypad_view)\n",
-    "# Output:\n",
-    "# [[1 2 3]\n",
-    "#  [4 5 6]\n",
-    "#  [7 8 9]]\n",
-    "\n",
-    "# Step 2: Shuffle rows in place\n",
-    "rng.shuffle(keypad_view, axis=0)\n",
-    "print(\"After rng.shuffle(keypad_view, axis=0):\")\n",
-    "print(keypad_view)\n",
-    "# Output (rows shuffled):\n",
-    "# [[7 8 9]\n",
-    "#  [1 2 3]\n",
-    "#  [4 5 6]]\n",
-    "\n",
-    "# Step 3: Transpose\n",
-    "set_view = keypad_view.T\n",
-    "print(\"After set_view = keypad_view.T:\")\n",
-    "print(set_view)\n",
-    "# Output (rows become columns):\n",
-    "# [[7 1 4]\n",
-    "#  [8 2 5]\n",
-    "#  [9 3 6]]\n",
-    "\n",
-    "# Step 4: Shuffle each row independently\n",
-    "set_view = rng.permutation(set_view, axis=1)\n",
-    "print(\"After rng.permutation(set_view, axis=1):\")\n",
-    "print(set_view)\n",
-    "# Output (each row shuffled independently):\n",
-    "# [[4 1 7]\n",
-    "#  [5 8 2]\n",
-    "#  [3 6 9]]"
-   ],
-   "id": "c7db73ce336d9f0a",
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Original keypad_view:\n",
-      "[[1 2 3]\n",
-      " [4 5 6]\n",
-      " [7 8 9]]\n",
-      "After rng.shuffle(keypad_view, axis=0):\n",
-      "[[7 8 9]\n",
-      " [1 2 3]\n",
-      " [4 5 6]]\n",
-      "After set_view = keypad_view.T:\n",
-      "[[7 1 4]\n",
-      " [8 2 5]\n",
-      " [9 3 6]]\n",
-      "After rng.permutation(set_view, axis=1):\n",
-      "[[4 7 1]\n",
-      " [5 8 2]\n",
-      " [6 9 3]]\n"
-     ]
-    }
-   ],
-   "execution_count": 6
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 2
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.6"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 5
-}