diff --git a/src/main/java/de/tims/viergewinnt/ai/Logic.java b/src/main/java/de/tims/viergewinnt/ai/Logic.java
index dbb4924..e6ff8e0 100644
--- a/src/main/java/de/tims/viergewinnt/ai/Logic.java
+++ b/src/main/java/de/tims/viergewinnt/ai/Logic.java
@@ -2,6 +2,15 @@ package de.tims.viergewinnt.ai;
 
 public class Logic {
 	public boolean testForWin(int[][] playfield, int player) {
+		int chain = 0;
+		for(int i = 0; i < playfield.length; i++) {
+			if(playfield[i][0] == player) {
+				chain++;
+			} else {
+				chain = 0;
+			}
+			if(chain == 4) return true;
+		}
 		return false;
 	}
 }
diff --git a/src/test/java/de/tims/viergewinnt/ai/LogicTest.java b/src/test/java/de/tims/viergewinnt/ai/LogicTest.java
index 010fcd6..f6f88d8 100644
--- a/src/test/java/de/tims/viergewinnt/ai/LogicTest.java
+++ b/src/test/java/de/tims/viergewinnt/ai/LogicTest.java
@@ -29,8 +29,15 @@ class LogicTest {
 	}
 	
 	private static Stream<Arguments> playfieldResults() {
+		int[][] playfield1 = {{0, 0, 0, 0, 0, 0}, 
+				   			  {0, 0, 0, 0, 0, 0},
+				   			  {1, 0, 0, 0, 0, 0},
+				   			  {1, 0, 0, 0, 0, 0},
+				   			  {1, 0, 0, 0, 0, 0},
+				   			  {1, 0, 0, 0, 0, 0}};
 		return Stream.of(
-				Arguments.of("emptyField", new int[6][6], 1, false)
+				Arguments.of("emptyField", new int[6][6], 1, false),
+				Arguments.of("4 in 1st column player1", playfield1, 1, true)
 				);
 	}