diff --git a/branches/newMo/src/memory/moAspiration.h b/branches/newMo/src/memory/moAspiration.h
new file mode 100644
index 000000000..96f529326
--- /dev/null
+++ b/branches/newMo/src/memory/moAspiration.h
@@ -0,0 +1,17 @@
+#ifndef _moAspiration_h
+#define _moAspiration_h
+
+/**
+ * Abstract class for Aspiration Criteria
+ */
+template< class Neighbor >
+class moAspiration : public eoBF<typename Neighbor::EOT &, Neighbor &, bool>
+{
+public:
+	typedef typename Neighbor::EOT EOT;
+
+	virtual void init(EOT & _sol) = 0;
+	virtual void update(EOT & _sol, Neighbor & _neighbor) = 0;
+};
+
+#endif
diff --git a/branches/newMo/src/memory/moBestImprAspiration.h b/branches/newMo/src/memory/moBestImprAspiration.h
new file mode 100644
index 000000000..57441e066
--- /dev/null
+++ b/branches/newMo/src/memory/moBestImprAspiration.h
@@ -0,0 +1,48 @@
+#ifndef _moBestImprAspiration_h
+#define _moBestImprAspiration_h
+
+#include <memory/moAspiration.h>
+
+/**
+ * Aspiration criteria accepts a solution better than the best so far
+ */
+template< class Neighbor >
+class moBestImprAspiration : public moAspiration<Neighbor>
+{
+public:
+
+	typedef typename Neighbor::EOT EOT;
+
+	/**
+	 * init the best solution
+	 * @param _sol the best solution found
+	 */
+	void init(EOT & _sol){
+		bestFoundSoFar = _sol;
+	}
+
+	/**
+	 * update the "bestFoundSoFar" if a best solution is found
+	 * @param _sol a solution
+	 * @param _neighbor a neighbor
+	 */
+	void update(EOT & _sol, Neighbor & _neighbor){
+		if (bestFoundSoFar.fitness() < _sol.fitness())
+			bestFoundSoFar = _sol;
+	}
+
+	/**
+	 * test if a solution is better than the "bestFoundSoFar"
+	 * @param _sol a solution
+	 * @param _neighbor a neighbor
+	 * @return true if _sol is better than the "bestFoundSoFar"
+	 */
+	bool operator()(EOT & _sol, Neighbor & _neighbor){
+		return (bestFoundSoFar.fitness() < _sol.fitness());
+	}
+
+private:
+	EOT bestFoundSoFar;
+};
+
+#endif