diff --git a/src/AoC_2024/Dazbo's_Advent_of_Code_2024.ipynb b/src/AoC_2024/Dazbo's_Advent_of_Code_2024.ipynb
index b5b28b0..b96a938 100644
--- a/src/AoC_2024/Dazbo's_Advent_of_Code_2024.ipynb
+++ b/src/AoC_2024/Dazbo's_Advent_of_Code_2024.ipynb
@@ -303,7 +303,11 @@
     "    else:\n",
     "        raise ValueError(f\"Unable to retrieve input data.\\n\" +\n",
     "                         f\"HTTP response: {response.status_code}\\n\" +\n",
-    "                         f\"{response.reason}: {response.content.decode('utf-8').strip()}\")\n"
+    "                         f\"{response.reason}: {response.content.decode('utf-8').strip()}\")\n",
+    "        \n",
+    "def show_day_link(day):\n",
+    "    day_link = f\"#### See [Day {day}](https://adventofcode.com/{YEAR}/day/{day}).\"\n",
+    "    display(Markdown(day_link))\n"
    ]
   },
   {
@@ -644,8 +648,7 @@
    "outputs": [],
    "source": [
     "DAY = \"1\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -858,8 +861,7 @@
    "outputs": [],
    "source": [
     "DAY = \"2\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -1060,8 +1062,7 @@
    "outputs": [],
    "source": [
     "DAY = \"3\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -1249,8 +1250,7 @@
    "outputs": [],
    "source": [
     "DAY = \"4\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -1504,8 +1504,7 @@
    "outputs": [],
    "source": [
     "DAY = \"5\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -1891,8 +1890,7 @@
    "outputs": [],
    "source": [
     "DAY = \"6\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -2388,8 +2386,7 @@
    "outputs": [],
    "source": [
     "DAY = \"7\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -2654,8 +2651,7 @@
    "outputs": [],
    "source": [
     "DAY = \"8\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {
@@ -2957,6 +2953,127 @@
     "logger.info(f\"Part 2 soln={soln}\")"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "## Day 9: title"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "DAY = \"9\" # replace with actual number (without leading digit)\n",
+    "show_day_link(DAY)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "d_name = \"d\" + str(DAY).zfill(2) # e.g. d01\n",
+    "script_name = \"aoc\" + str(YEAR) + d_name # e.g. aoc2024d01\n",
+    "locations = dc.get_locations(d_name)\n",
+    "logger.setLevel(logging.DEBUG)\n",
+    "# td.setup_file_logging(logger, locations.output_dir)\n",
+    "\n",
+    "# Retrieve input and store in local file\n",
+    "try:\n",
+    "    write_puzzle_input_file(YEAR, DAY, locations)\n",
+    "    with open(locations.input_file, mode=\"rt\") as f:\n",
+    "        input_data = f.read().splitlines()\n",
+    "\n",
+    "    logger.info(\"Input data:\\n%s\", dc.top_and_tail(input_data))\n",
+    "except ValueError as e:\n",
+    "    logger.error(e)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Day 9 Part 1\n",
+    "\n",
+    "Overview..."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def solve_part1(data):\n",
+    "    pass"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%%time\n",
+    "sample_inputs = []\n",
+    "sample_inputs.append(\"\"\"abcdef\"\"\")\n",
+    "sample_answers = [\"uvwxyz\"]\n",
+    "\n",
+    "for curr_input, curr_ans in zip(sample_inputs, sample_answers):\n",
+    "    validate(solve_part1(curr_input), curr_ans) # test with sample data\n",
+    "    logger.info(\"Test passed\")\n",
+    "\n",
+    "logger.info(\"All tests passed!\")\n",
+    "\n",
+    "soln = solve_part1(input_data)\n",
+    "logger.info(f\"Part 1 soln={soln}\")"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Day 9 Part 2\n",
+    "\n",
+    "Overview..."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def solve_part2(data):\n",
+    "    pass"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%%time\n",
+    "sample_inputs = []\n",
+    "sample_inputs.append(\"\"\"abcdef\"\"\")\n",
+    "sample_answers = [\"uvwxyz\"]\n",
+    "\n",
+    "for curr_input, curr_ans in zip(sample_inputs, sample_answers):\n",
+    "    validate(solve_part2(curr_input), curr_ans) # test with sample data\n",
+    "    logger.info(\"Test passed\")    \n",
+    "\n",
+    "logger.info(\"Tests passed!\")\n",
+    "\n",
+    "soln = solve_part2(input_data)\n",
+    "logger.info(f\"Part 2 soln={soln}\")"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -2972,8 +3089,7 @@
    "outputs": [],
    "source": [
     "DAY = \"n\" # replace with actual number (without leading digit)\n",
-    "day_link = f\"#### See [Day {DAY}](https://adventofcode.com/{YEAR}/day/{DAY}).\"\n",
-    "display(Markdown(day_link))"
+    "show_day_link(DAY)"
    ]
   },
   {