diff --git a/README.md b/README.md
index 4ff702e..2bb3c4f 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ Minesweeper is a classic puzzle game where the objective is to clear a rectangul
 
 The board consists of hidden cells, some containing mines. Uncover a cell by selecting its coordinates. If it's a mine, you lose. If it's safe, a number appears indicating how many mines are adjacent to that cell.
 **Use logic to deduce mine locations and mark them with flags.**
+Marking all mines with flags isn't necessary, but helps.
 
 ### Clear all non-mine cells to win!