diff --git a/vier_gewinnt/JS/vierDiagonalLinks.js b/vier_gewinnt/JS/vierDiagonalLinks.js
new file mode 100644
index 0000000..e0d8369
--- /dev/null
+++ b/vier_gewinnt/JS/vierDiagonalLinks.js
@@ -0,0 +1,12 @@
+function vierDiagonalLinks(allSpaltenArray) {
+    var Gewinner =0;
+    for (let i = 3; i <= allSpaltenArray.length; i++) {
+        for (let j = 0; j <= allSpaltenArray[0].length -3; j++) {
+            if (allSpaltenArray[j][i]===1 && allSpaltenArray[j+1][i-1]===1 && allSpaltenArray[j+2][i-2]===1 && allSpaltenArray[j+3][i-3]===1) {
+                Gewinner = 1;
+            }  
+        }     
+    }
+    return Gewinner;
+}
+module.exports = vierDiagonalLinks;
\ No newline at end of file
diff --git a/vier_gewinnt/tests/test_vierDiagonalLinks.test.js b/vier_gewinnt/tests/test_vierDiagonalLinks.test.js
new file mode 100644
index 0000000..9d65ddf
--- /dev/null
+++ b/vier_gewinnt/tests/test_vierDiagonalLinks.test.js
@@ -0,0 +1,12 @@
+const vierDiagonalLinks = require("../JS/vierDiagonalLinks");
+
+describe("Test Vier Gewinnt", () => {
+    it("Test vierDiagonalLinks: Vier Diagonal nach links erkennen und Gewinner 1(Gruen) zuruek geben", () =>{
+        expect(vierDiagonalLinks([[0, 0, 0, 0, 0, 0], [2, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0], [2, 2, 1, 1, 0, 0], [2, 1, 1, 0, 0, 0], [2, 1, 0, 0, 0, 0], [1, 0, 0, 0, 0, 0]])).toBe(1);
+        expect(vierDiagonalLinks([[2, 1, 2, 1, 0, 0], [2, 1, 1, 0, 0, 0], [2, 1, 0, 0, 0, 0], [1, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0], [2, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0]])).toBe(1);
+        expect(vierDiagonalLinks([[0, 0, 0, 0, 0, 0], [2, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0], [2, 2, 1, 2, 1, 1], [2, 1, 2, 1, 1, 0], [2, 1, 2, 1, 0, 0], [1, 2, 1, 0, 0, 0]])).toBe(1);
+        expect(vierDiagonalLinks([[2, 2, 1, 2, 1, 1], [2, 1, 2, 1, 1, 0], [2, 1, 2, 1, 0, 0], [1, 2, 1, 0, 0, 0], [0, 0, 0, 0, 0, 0], [2, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0]])).toBe(1);
+        expect(vierDiagonalLinks([[0, 0, 0, 0, 0, 0], [1, 2, 1, 2, 1, 0], [2, 1, 2, 1, 0, 0], [2, 1, 1, 0, 0, 0], [2, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0], [1, 2, 2, 0, 0, 0]])).toBe(1);
+        
+    })
+})
\ No newline at end of file