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diff --git a/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/api/strategy/interfaces/IStrategy.java b/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/api/strategy/interfaces/IStrategy.java
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+++ b/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/api/strategy/interfaces/IStrategy.java
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+/*******************************************************************************
+ * Copyright (c) 2010-2015, Andras Szabolcs Nagy and Daniel Varro
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-v20.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package org.eclipse.viatra.dse.api.strategy.interfaces;
+
+import org.eclipse.viatra.dse.base.ThreadContext;
+import org.eclipse.viatra.dse.solutionstore.SolutionStore;
+
+/**
+ * This high level interface is responsible for defining basic operations of an exploration strategy.
+ * 
+ * @author Andras Szabolcs Nagy
+ *
+ */
+public interface IStrategy {
+
+    /**
+     * Initializes the strategy with a specific {@link ThreadContext}.
+     * 
+     * @param context
+     *            The context.
+     */
+    void initStrategy(ThreadContext context);
+
+    /**
+     * This method explores the design space as the implementation specifies. It will be called only once, hence the
+     * exploration loop is run by the implementation. The termination condition is also specified by the implementation
+     * and when it returns the exploration thread will be disposed.
+     */
+    void explore();
+
+    /**
+     * The implementation of this interface should be ready to be interrupted. If this method is called, the
+     * {@link IStrategy#explore()} method should return ASAP.
+     * 
+     * This method is also called by the {@link SolutionStore} class if enough solutions are found. 
+     */
+    void interruptStrategy();
+}