diff --git a/README.md b/README.md
index eb60226..bd7556f 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,9 @@
 This project is just a collection of research regarding the generation of sudoku's.
 It's not a production project.
 
-The main focus is on the generation of sudoku's using several algorithms like backtracking. 
+The number of valid Sudoku puzzles has been calculated to be 6,670,903,752,021,072,936,960 (approximately 6.67 × 10²¹).
+
+The main focus of this project is to generate and solve the hardest possible sudoku's.
 
 ## Applications