diff --git a/src/test/test_duellist_spielesammlung_projekt.c b/src/test/test_duellist_spielesammlung_projekt.c
index 31107bf..dc12cd1 100644
--- a/src/test/test_duellist_spielesammlung_projekt.c
+++ b/src/test/test_duellist_spielesammlung_projekt.c
@@ -30,4 +30,39 @@ void test_coinflip_player_o_starts(void) {
     // Assert
     TEST_ASSERT_EQUAL(SUCCESS, result);
     TEST_ASSERT_TRUE(game.currentPlayer == PLAYER_X || game.currentPlayer == PLAYER_O);
-}
\ No newline at end of file
+}
+
+void test_vertical_win(void) {
+    // Arrange
+    TicTacToeGame game = { .board = {{PLAYER_X, EMPTY, EMPTY},
+                                     {PLAYER_X, EMPTY, EMPTY},
+                                     {PLAYER_X, EMPTY, EMPTY}},
+                          .currentPlayer = PLAYER_O };
+
+    // Act
+    GameResult result = checkGameResult(&game);
+
+    // Assert
+    TEST_ASSERT_EQUAL(GAME_WIN, result);
+}
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