diff --git a/quellen b/quellen
new file mode 100644
index 0000000..246b419
--- /dev/null
+++ b/quellen
@@ -0,0 +1,2 @@
+JFileChoser in UI: (mit GPT)
+Prompt: "Wie kann ich in swing in java Files aus einem Explorer auswählen?".
\ No newline at end of file
diff --git a/src/main/java/de/mannheim/th/chess/utl/Clock.java b/src/main/java/de/mannheim/th/chess/utl/Clock.java
index 88f7e52..fa09d17 100644
--- a/src/main/java/de/mannheim/th/chess/utl/Clock.java
+++ b/src/main/java/de/mannheim/th/chess/utl/Clock.java
@@ -3,10 +3,138 @@ package de.mannheim.th.chess.utl;
 /**
  * Zeigt die Zeitangabe während eines Spiels eines Spielers an.
  */
-public class Clock{
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Font;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JSplitPane;
+import javax.swing.Timer;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+public class Clock extends Thread implements Runnable {
+	private volatile boolean whiteToMove = true;
+	private volatile boolean gameHasFinished = false;
+	private static final Logger clockLogger = LogManager.getLogger(Clock.class);
+	private int minutes;
 	
-	public Clock() {
+	public Clock(String mode) {
+		setMode(mode);
 		
 	}
 	
+	public void pressClock() {
+		whiteToMove = !whiteToMove;
+		if (whiteToMove) {
+			clockLogger.info("Weiß ist am Zug");
+		} else {
+			clockLogger.info("Schwarz ist am Zug");
+		}
+	}
+	
+	public void endGame() {
+		gameHasFinished = true;
+	}
+	
+	public void run() {
+		JFrame clockFrame = new JFrame("Clock");
+		
+		JPanel player1Panel = new JPanel();
+		player1Panel.setBackground(Color.BLACK);
+		JPanel player2Panel = new JPanel();
+		player2Panel.setBackground(Color.BLACK);
+		clockFrame.setBounds(1000, 500, 10000, 10000);
+		clockFrame.setLayout(new BorderLayout());
+		JLabel clock1 = new JLabel(" " + minutes + ":00 ");
+		clock1.setForeground(Color.WHITE);
+		clock1.setFont(new Font("Arial", Font.BOLD, 50));
+		JLabel clock2 = new JLabel(" " + minutes + ":00 ");
+		clock2.setForeground(Color.WHITE);
+		clock2.setFont(new Font("Arial", Font.BOLD, 50));
+		player1Panel.add(clock1);
+		player2Panel.add(clock2);
+		JSplitPane split = new JSplitPane(JSplitPane.VERTICAL_SPLIT, player1Panel, player2Panel);
+		split.setFont(new Font("Arial", Font.BOLD, 50));
+		clockFrame.add(split);
+		
+		var min1 = new AtomicInteger(minutes);
+		var sec1 = new AtomicInteger(0);
+		var min2 = new AtomicInteger(minutes);
+		var sec2 = new AtomicInteger(0);
+		clockFrame.pack();
+		clockFrame.setVisible(true);
+
+		var t = new Timer(1000, (ae) -> {
+	
+			if (!gameHasFinished) {	
+				
+			StringBuilder clockShower = new StringBuilder();
+			if (whiteToMove) {
+				if (sec1.intValue() == 00) {
+					sec1.set(60);
+					min1.decrementAndGet();
+				}
+				if (min1.intValue() < 10) {
+					clockShower.append("0");
+				}
+				clockShower.append(min1.get());
+				clockShower.append(":");
+				if (sec1.intValue() < 10) {
+					clockShower.append("0");
+				}
+				clockShower.append(sec1.decrementAndGet());
+				clock1.setText(clockShower.toString());
+
+			} else {
+				if (sec2.intValue() == 00) {
+					sec2.set(60);
+					min2.decrementAndGet();
+				}
+				if (min2.intValue() < 10) {
+					clockShower.append("0");
+				}
+				clockShower.append(min2.get());
+				clockShower.append(":");
+				if (sec2.intValue() < 10) {
+					clockShower.append("0");
+				}
+				clockShower.append(sec2.decrementAndGet());
+				clock2.setText(clockShower.toString());
+			}
+			clockFrame.repaint();
+			if ((sec1.intValue() == 0 && min1.intValue() == 0) || (sec2.intValue() == 0 && min2.intValue() == 0)) {
+				endGame();
+			}
+		} });
+
+		t.start();
+	}
+	public static void main(String[] args) throws InterruptedException {
+		Clock st = new Clock("classic");
+		st.start();
+		st.pressClock();
+	}
+	
+	private void setMode(String mode) {
+		switch(mode) {
+		case "blitz":
+			minutes = 5;
+			clockLogger.info("Neue Blitz-Uhr wurde erstellt");
+			break;
+		case "rapid":
+			minutes = 10;
+			clockLogger.info("Neue Schnellschach-Uhr wurde erstellt");
+			break;
+		case "classic":
+			minutes = 120;
+			clockLogger.info("Neue klassische Schachuhr wurde erstellt");
+			break;
+		}
+	}
+
 }
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