diff --git a/src/main/java/de/tims/tictactoe/GameLogic.java b/src/main/java/de/tims/tictactoe/GameLogic.java
index 463bbc7..49582bc 100644
--- a/src/main/java/de/tims/tictactoe/GameLogic.java
+++ b/src/main/java/de/tims/tictactoe/GameLogic.java
@@ -41,8 +41,19 @@ public class GameLogic {
 		return true;
 	}
 	
-	public boolean checkForWin() {
-		return true;
+	public boolean checkForWin(char player) {
+		boolean finished = false;
+		int countFields = 0;
+
+		// check columns
+		for (int i = 0; i < this.board.length; i++) {
+			for (int j = 0; j < this.board[0].length; j++) {
+				 if(board[i][j] == player) countFields++;
+			}
+		}
+		if(countFields == this.board.length) finished = true;
+		
+		return finished;
 	}
 
 }
diff --git a/src/test/java/de/tims/tictactoe/GameLogicTest.java b/src/test/java/de/tims/tictactoe/GameLogicTest.java
index 11bffca..718caaf 100644
--- a/src/test/java/de/tims/tictactoe/GameLogicTest.java
+++ b/src/test/java/de/tims/tictactoe/GameLogicTest.java
@@ -80,10 +80,10 @@ class GameLogicTest {
 			assertEquals(expectedResult, realResult);
 	 }
 	 
-	 @ParameterizedTest(name = "[{index}] {0}")
+	 @ParameterizedTest(name = "[{index}] {0}: should be {2}")
 	 @MethodSource("testCasesForCheckForWin")
-	 void checkForWinTest(String testName, boolean expectedResult, char[][] boardToCheck) {
-			boolean realResult = new GameLogic(boardToCheck).checkForWin();
+	 void checkForWinTest(String testName, char player, boolean expectedResult, char[][] boardToCheck) {
+			boolean realResult = new GameLogic(boardToCheck).checkForWin(player);
 			
 			assertEquals(expectedResult, realResult);
 	 }
@@ -134,14 +134,18 @@ class GameLogicTest {
 	 
 	 private static Stream<Arguments> testCasesForCheckForWin() {
 		    return Stream.of(
-		    			Arguments.of("check win for player 1", true, new char[][] 
-																 {{'x', '-', '-'}, 
-																  {'x', '-', '-'},
-																  {'x', '-', '-'}}),
-		    			Arguments.of("check win for player 2", true, new char[][] 
-																 {{'o', '-', '-'}, 
-																  {'o', '-', '-'},
-																  {'o', '-', '-'}})
+		    			Arguments.of("check win for player 1", 'x', true, new char[][] 
+																	 {{'x', '-', '-'}, 
+																	  {'x', '-', '-'},
+																	  {'x', '-', '-'}}),
+		    			Arguments.of("check win for player 2", 'o', true, new char[][] 
+																	 {{'o', '-', '-'}, 
+																	  {'o', '-', '-'},
+																	  {'o', '-', '-'}}),
+		    			Arguments.of("check win for player 2", 'o', false, new char[][] 
+																	 {{'o', '-', '-'}, 
+																	  {'o', '-', '-'},
+																	  {'-', '-', '-'}})
 			    		);
 	 }