diff --git a/src/test/c/test_VierGewinnt.c b/src/test/c/test_VierGewinnt.c
index 91bfaff..8ad593b 100644
--- a/src/test/c/test_VierGewinnt.c
+++ b/src/test/c/test_VierGewinnt.c
@@ -28,3 +28,38 @@ void test_dropPiece_FullColumn(void) {
 
     TEST_ASSERT_EQUAL_INT(0, dropPiece(board, 3, 'X'));  // Spalte ist voll, sollte 0 zurückgeben
 }
+
+
+void test_checkWin_Horizontal_X(void) {
+    char board[6][7] = {
+        {'X', 'X', ' ', ' ', ' ', ' ', ' '},
+        {'O', 'O', 'O', ' ', ' ', ' ', ' '},
+        {' ', ' ', ' ', ' ', ' ', ' ', ' '},
+        {' ', 'X', 'X', 'X', 'X', ' ', ' '},
+        {' ', ' ', ' ', ' ', ' ', ' ', ' '},
+        {' ', ' ', ' ', ' ', ' ', ' ', ' '}
+    };
+
+    TEST_ASSERT_EQUAL_INT(1, checkWin(board, 'X'));  // Horizontale Gewinnsituation für 'X'
+}
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