diff --git a/ipynb/xkcd1313.ipynb b/ipynb/xkcd1313.ipynb
index 48b63f5..bec2c5c 100644
--- a/ipynb/xkcd1313.ipynb
+++ b/ipynb/xkcd1313.ipynb
@@ -1101,100 +1101,9 @@
     "\n",
     "\n",
     "\n",
-    "<hr>\n",
-    "[*Peter Norvig*](http://norvig.com), Jan. 2014"
+    "<hr>\n"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 22,
-   "metadata": {
-    "button": false,
-    "collapsed": false,
-    "deletable": true,
-    "new_sheet": false,
-    "run_control": {
-     "read_only": false
-    }
-   },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Characters: 44, Parts: 12, Competitive ratio: 4.8, Winners: 21, Losers: 21\n"
-     ]
-    },
-    {
-     "data": {
-      "text/plain": [
-       "'.17|4.2|1.4|06|55|009|37|0.2|00$|191|015|003'"
-      ]
-     },
-     "execution_count": 22,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "report(words(\"\"\" 000000000\n",
-    " 000000003\n",
-    " 000000006\n",
-    " 000000009\n",
-    " 000000012\n",
-    " 000000015\n",
-    " 066990060\n",
-    " 140091876\n",
-    " 173655750\n",
-    " 312440187\n",
-    " 321769005\n",
-    " 368542278\n",
-    " 390259104\n",
-    " 402223947\n",
-    " 443512431\n",
-    " 714541758\n",
-    " 747289572\n",
-    " 819148602\n",
-    " 878531775\n",
-    " 905586303\n",
-    " 9537348\"\"\"), words(\"\"\"000000005\n",
-    " 000000008\n",
-    " 000000010\n",
-    " 000000011\n",
-    " 000000014\n",
-    " 018990130\n",
-    " 112057285\n",
-    " 159747125\n",
-    " 176950268\n",
-    " 259108903\n",
-    " 333162608\n",
-    " 388401457\n",
-    " 477848777\n",
-    " 478621693\n",
-    " 531683939\n",
-    " 704168662\n",
-    " 759282218\n",
-    " 769340942\n",
-    " 851936815\n",
-    " 973816159\n",
-    " 979204403\"\"\"))"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "button": false,
-    "collapsed": true,
-    "deletable": true,
-    "new_sheet": false,
-    "run_control": {
-     "read_only": false
-    }
-   },
-   "outputs": [],
-   "source": []
-  }
  ],
  "metadata": {
   "kernelspec": {