diff --git a/1.-Python/1.-Snail-and-Well/snail-and-well.ipynb b/1.-Python/1.-Snail-and-Well/snail-and-well.ipynb
index 3402144..44da3f1 100644
--- a/1.-Python/1.-Snail-and-Well/snail-and-well.ipynb
+++ b/1.-Python/1.-Snail-and-Well/snail-and-well.ipynb
@@ -33,7 +33,12 @@
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "well_height = 125\n",
+    "daily_distance = 30\n",
+    "nightly_distance = -20\n",
+    "snail_position = 0"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -161,9 +166,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.2"
+   "version": "3.8.6"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }
diff --git a/1.-Python/2.-Duel-of-Sorcerers/duel-of-sorcerers.ipynb b/1.-Python/2.-Duel-of-Sorcerers/duel-of-sorcerers.ipynb
index b4a5f6d..04121d6 100644
--- a/1.-Python/2.-Duel-of-Sorcerers/duel-of-sorcerers.ipynb
+++ b/1.-Python/2.-Duel-of-Sorcerers/duel-of-sorcerers.ipynb
@@ -49,10 +49,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "gandalf = [10, 11, 13, 30, 22, 11, 10, 33, 22, 22]\n",
+    "saruman = [23, 66, 12, 43, 12, 10, 44, 23, 12, 17]\n",
+    "spells = 10"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -64,10 +68,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "gandalf_wins = 0\n",
+    "saruman_wins = 0"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -81,7 +88,18 @@
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "for spells in zip(gandalf, saruman):\n",
+    "    gandalf_spell = [0]\n",
+    "    saruman_spell = [1]\n",
+    "    if gandalf_spell>saruman_spell:\n",
+    "        gandalf_wins += 1\n",
+    "    elif saruman_spell>gandalf_spell:\n",
+    "        saruman_wins += 1\n",
+    "\n",
+    "print(\"Total Gandalf wins:\", gandalf_wins)\n",
+    "print(\"Total Saruman wins:\", saruman_wins)"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -221,9 +239,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.2"
+   "version": "3.8.6"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }
diff --git a/robot.md b/robot.md
new file mode 100644
index 0000000..e69de29