diff --git a/Trees/SAT_Sudoku_Answers.ipynb b/Trees/SAT_Sudoku_Answers.ipynb
index 8c045ad..fa2d6f5 100644
--- a/Trees/SAT_Sudoku_Answers.ipynb
+++ b/Trees/SAT_Sudoku_Answers.ipynb
@@ -4,7 +4,7 @@
   "metadata": {
     "colab": {
       "provenance": [],
-      "authorship_tag": "ABX9TyMDkDz3RrsH0nJVTdsejhO7",
+      "authorship_tag": "ABX9TyOLnEFh9BVTdtSWc9zHSjyA",
       "include_colab_link": true
     },
     "kernelspec": {
@@ -38,7 +38,7 @@
     {
       "cell_type": "markdown",
       "source": [
-        "# Graph coloring\n",
+        "# Solving Soduku problems with SAT\n",
         "\n",
         "The purpose of this Python notebook is to use investigate using SAT to solve Sudoku problems.  \n",
         "\n",