diff --git a/src/break_out/model/IStone.java b/src/break_out/model/IStone.java
new file mode 100644
index 0000000..56cf3b4
--- /dev/null
+++ b/src/break_out/model/IStone.java
@@ -0,0 +1,17 @@
+package break_out.model;
+
+import java.awt.*;
+
+public interface IStone {
+
+	// Exercise 3
+	public int getType();
+	public int getValue();
+	public Color getColor();
+	public Position getPosition();
+	public void setType(int type);
+	public void setValue(int value);
+	public void setColor(Color color);
+	public void setPosition(Position position);
+
+}
\ No newline at end of file