diff --git a/src/AoC_2023/Dazbo's_Advent_of_Code_2023.ipynb b/src/AoC_2023/Dazbo's_Advent_of_Code_2023.ipynb
index e343881..3f0884c 100644
--- a/src/AoC_2023/Dazbo's_Advent_of_Code_2023.ipynb
+++ b/src/AoC_2023/Dazbo's_Advent_of_Code_2023.ipynb
@@ -2453,19 +2453,21 @@
     "Rules for determining hand strengh:\n",
     "\n",
     "- Usual poker hand strengths, i.e.\n",
-    "  - `5-of-a-kind > 4-of-a-kind`\n",
-    "  - `            > full-house`\n",
-    "  - `            > 3-of-a-kind`\n",
-    "  - `            > two pair`\n",
-    "  - `            > one pair`\n",
-    "  - `            > high card`\n",
+    "  ```\n",
+    "  5-of-a-kind > 4-of-a-kind\n",
+    "              > full-house\n",
+    "              > 3-of-a-kind\n",
+    "              > two pair\n",
+    "              > one pair\n",
+    "              > high card\n",
+    "  ```\n",
     "- But unlike normal poker, hand strength tie-breakers are achieved by comparing the successive card strengths of cards in the hand, starting from first to last.\n",
     "\n",
     "**My solution:**\n",
     "\n",
-    "- Create a dict to store `CARD_SCORES`. I've assigned integer values so we can compare card strength.\n",
-    "- Create a dict to store `HAND_TYPE`. Again, I've assigned integer values so that we can compare hands.\n",
     "- Create a `Hand` class:\n",
+    "  - In this class, create a dict class attribute to store `card_scores`. I've assigned integer values so we can compare card strength.\n",
+    "  - Create a dict class attribute to store `HAND_TYPE`. Again, I've assigned integer values so that we can compare hands.\n",
     "  - Initialise with a string that represents our five cards.\n",
     "  - I'm using the Python `collections.Counter` class to help me determine the `HAND_TYPE`. The `Counter` class counts members of any collection passed to it, including strings. It stores the counts as a dict, in the form `{character: count}`. Then we can use `most_common()` to convert this dict into an ordered list of tuples, ordered by count.\n",
     "  - From here, it's trivial to determine the hand type.  For example, if `most_common()` count is 5, then we have five-of-a-kind.  If it's 4, then we have four-of-a-kind, and so on. Once we've determined the hand type, store it in the `self._hand_type` instance variable.\n",
@@ -2510,34 +2512,32 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "CARD_SCORES = { # card labels\n",
-    "    \"A\": 14, \n",
-    "    \"K\": 13,\n",
-    "    \"Q\": 12,\n",
-    "    \"J\": 11,\n",
-    "    \"T\": 10,\n",
-    "    \"9\": 9,\n",
-    "    \"8\": 8,\n",
-    "    \"7\": 7,\n",
-    "    \"6\": 6,\n",
-    "    \"5\": 5,\n",
-    "    \"4\": 4,\n",
-    "    \"3\": 3,\n",
-    "    \"2\": 2\n",
-    "}\n",
-    "\n",
-    "HAND_TYPE = {\n",
-    "    \"FIVE\": 7,\n",
-    "    \"FOUR\": 6,\n",
-    "    \"FH\": 5,\n",
-    "    \"THREE\": 4,\n",
-    "    \"TP\": 3,\n",
-    "    \"OP\": 2,\n",
-    "    \"HC\": 1\n",
-    "}\n",
-    "\n",
     "class Hand:\n",
-    "    card_scores = CARD_SCORES\n",
+    "    card_scores = { # card labels\n",
+    "        \"A\": 14, \n",
+    "        \"K\": 13,\n",
+    "        \"Q\": 12,\n",
+    "        \"J\": 11,\n",
+    "        \"T\": 10,\n",
+    "        \"9\": 9,\n",
+    "        \"8\": 8,\n",
+    "        \"7\": 7,\n",
+    "        \"6\": 6,\n",
+    "        \"5\": 5,\n",
+    "        \"4\": 4,\n",
+    "        \"3\": 3,\n",
+    "        \"2\": 2\n",
+    "    }\n",
+    "    \n",
+    "    HAND_TYPE = {\n",
+    "        \"FIVE\": 7,\n",
+    "        \"FOUR\": 6,\n",
+    "        \"FH\": 5,\n",
+    "        \"THREE\": 4,\n",
+    "        \"TP\": 3,\n",
+    "        \"OP\": 2,\n",
+    "        \"HC\": 1\n",
+    "    }\n",
     "    \n",
     "    def __init__(self, cards: str, joker=False) -> None:\n",
     "        self.cards = cards\n",
@@ -2591,7 +2591,7 @@
     "    \n",
     "    def value(self):\n",
     "        \"\"\" Return a score, based on hand type \"\"\"\n",
-    "        return HAND_TYPE[self._hand_type]\n",
+    "        return Hand.HAND_TYPE[self._hand_type]\n",
     "    \n",
     "    def __lt__(self, other: Hand):\n",
     "        \"\"\" Compare this hand with another hand.\n",