diff --git a/instances/ipc-1998-gripper/domain.pddl b/instances/PDDL/ipc-1998-gripper/domain.pddl similarity index 100% rename from instances/ipc-1998-gripper/domain.pddl rename to instances/PDDL/ipc-1998-gripper/domain.pddl diff --git a/instances/ipc-1998-gripper/problem-01.pddl b/instances/PDDL/ipc-1998-gripper/problem-01.pddl similarity index 100% rename from instances/ipc-1998-gripper/problem-01.pddl rename to instances/PDDL/ipc-1998-gripper/problem-01.pddl diff --git a/instances/ipc-1998-gripper/problem-02.pddl b/instances/PDDL/ipc-1998-gripper/problem-02.pddl similarity index 100% rename from instances/ipc-1998-gripper/problem-02.pddl rename to instances/PDDL/ipc-1998-gripper/problem-02.pddl diff --git a/instances/ipc-1998-gripper/solutions b/instances/PDDL/ipc-1998-gripper/solutions similarity index 100% rename from instances/ipc-1998-gripper/solutions rename to instances/PDDL/ipc-1998-gripper/solutions diff --git a/instances/ipc-2000-blocks-track-1-typed/domain.pddl b/instances/PDDL/ipc-2000-blocks-track-1-typed/domain.pddl similarity index 100% rename from instances/ipc-2000-blocks-track-1-typed/domain.pddl rename to instances/PDDL/ipc-2000-blocks-track-1-typed/domain.pddl diff --git a/instances/ipc-2000-blocks-track-1-typed/problem-04-00.pddl b/instances/PDDL/ipc-2000-blocks-track-1-typed/problem-04-00.pddl similarity index 100% rename from instances/ipc-2000-blocks-track-1-typed/problem-04-00.pddl rename to instances/PDDL/ipc-2000-blocks-track-1-typed/problem-04-00.pddl diff --git a/instances/ipc-2000-blocks-track-1-typed/problem-05-01.pddl b/instances/PDDL/ipc-2000-blocks-track-1-typed/problem-05-01.pddl similarity index 100% rename from instances/ipc-2000-blocks-track-1-typed/problem-05-01.pddl rename to instances/PDDL/ipc-2000-blocks-track-1-typed/problem-05-01.pddl diff --git a/instances/ipc-2000-blocks-track-1-typed/problem-08-01.pddl b/instances/PDDL/ipc-2000-blocks-track-1-typed/problem-08-01.pddl similarity index 100% rename from instances/ipc-2000-blocks-track-1-typed/problem-08-01.pddl rename to instances/PDDL/ipc-2000-blocks-track-1-typed/problem-08-01.pddl diff --git a/instances/ipc-2000-blocks-track-1-typed/problem-09-02.pddl b/instances/PDDL/ipc-2000-blocks-track-1-typed/problem-09-02.pddl similarity index 100% rename from instances/ipc-2000-blocks-track-1-typed/problem-09-02.pddl rename to instances/PDDL/ipc-2000-blocks-track-1-typed/problem-09-02.pddl diff --git a/instances/ipc-2000-blocks-track-1-typed/solutions b/instances/PDDL/ipc-2000-blocks-track-1-typed/solutions similarity index 100% rename from instances/ipc-2000-blocks-track-1-typed/solutions rename to instances/PDDL/ipc-2000-blocks-track-1-typed/solutions diff --git a/instances/ipc-2000-elevator-m10-strips/domain.pddl b/instances/PDDL/ipc-2000-elevator-m10-strips/domain.pddl similarity index 100% rename from instances/ipc-2000-elevator-m10-strips/domain.pddl rename to instances/PDDL/ipc-2000-elevator-m10-strips/domain.pddl diff --git a/instances/ipc-2000-elevator-m10-strips/problem-03-00.pddl b/instances/PDDL/ipc-2000-elevator-m10-strips/problem-03-00.pddl similarity index 100% rename from instances/ipc-2000-elevator-m10-strips/problem-03-00.pddl rename to instances/PDDL/ipc-2000-elevator-m10-strips/problem-03-00.pddl diff --git a/instances/ipc-2000-elevator-m10-strips/problem-03-01.pddl b/instances/PDDL/ipc-2000-elevator-m10-strips/problem-03-01.pddl similarity index 100% rename from instances/ipc-2000-elevator-m10-strips/problem-03-01.pddl rename to instances/PDDL/ipc-2000-elevator-m10-strips/problem-03-01.pddl diff --git a/instances/ipc-2000-elevator-m10-strips/problem-04-00.pddl b/instances/PDDL/ipc-2000-elevator-m10-strips/problem-04-00.pddl similarity index 100% rename from instances/ipc-2000-elevator-m10-strips/problem-04-00.pddl rename to instances/PDDL/ipc-2000-elevator-m10-strips/problem-04-00.pddl diff --git a/instances/ipc-2000-elevator-m10-strips/problem-04-01.pddl b/instances/PDDL/ipc-2000-elevator-m10-strips/problem-04-01.pddl similarity index 100% rename from instances/ipc-2000-elevator-m10-strips/problem-04-01.pddl rename to instances/PDDL/ipc-2000-elevator-m10-strips/problem-04-01.pddl diff --git a/instances/ipc-2000-elevator-m10-strips/solutions b/instances/PDDL/ipc-2000-elevator-m10-strips/solutions similarity index 100% rename from instances/ipc-2000-elevator-m10-strips/solutions rename to instances/PDDL/ipc-2000-elevator-m10-strips/solutions diff --git a/instances/ipc-2002-depots-strips/domain.pddl b/instances/PDDL/ipc-2002-depots-strips/domain.pddl similarity index 100% rename from instances/ipc-2002-depots-strips/domain.pddl rename to instances/PDDL/ipc-2002-depots-strips/domain.pddl diff --git a/instances/ipc-2002-depots-strips/problem-01.pddl b/instances/PDDL/ipc-2002-depots-strips/problem-01.pddl similarity index 100% rename from instances/ipc-2002-depots-strips/problem-01.pddl rename to instances/PDDL/ipc-2002-depots-strips/problem-01.pddl diff --git a/instances/ipc-2002-depots-strips/problem-02.pddl b/instances/PDDL/ipc-2002-depots-strips/problem-02.pddl similarity index 100% rename from instances/ipc-2002-depots-strips/problem-02.pddl rename to instances/PDDL/ipc-2002-depots-strips/problem-02.pddl diff --git a/instances/ipc-2002-depots-strips/solutions b/instances/PDDL/ipc-2002-depots-strips/solutions similarity index 100% rename from instances/ipc-2002-depots-strips/solutions rename to instances/PDDL/ipc-2002-depots-strips/solutions diff --git a/instances/ipc-2002-driver-log-strips/domain.pddl b/instances/PDDL/ipc-2002-driver-log-strips/domain.pddl similarity index 100% rename from instances/ipc-2002-driver-log-strips/domain.pddl rename to instances/PDDL/ipc-2002-driver-log-strips/domain.pddl diff --git a/instances/ipc-2002-driver-log-strips/problem-01.pddl b/instances/PDDL/ipc-2002-driver-log-strips/problem-01.pddl similarity index 100% rename from instances/ipc-2002-driver-log-strips/problem-01.pddl rename to instances/PDDL/ipc-2002-driver-log-strips/problem-01.pddl diff --git a/instances/ipc-2002-driver-log-strips/problem-03.pddl b/instances/PDDL/ipc-2002-driver-log-strips/problem-03.pddl similarity index 100% rename from instances/ipc-2002-driver-log-strips/problem-03.pddl rename to instances/PDDL/ipc-2002-driver-log-strips/problem-03.pddl diff --git a/instances/ipc-2002-driver-log-strips/solutions b/instances/PDDL/ipc-2002-driver-log-strips/solutions similarity index 100% rename from instances/ipc-2002-driver-log-strips/solutions rename to instances/PDDL/ipc-2002-driver-log-strips/solutions diff --git a/instances/ipc-2004-satellite/domain.pddl b/instances/PDDL/ipc-2004-satellite/domain.pddl similarity index 100% rename from instances/ipc-2004-satellite/domain.pddl rename to instances/PDDL/ipc-2004-satellite/domain.pddl diff --git a/instances/ipc-2004-satellite/problem-01.pddl b/instances/PDDL/ipc-2004-satellite/problem-01.pddl similarity index 100% rename from instances/ipc-2004-satellite/problem-01.pddl rename to instances/PDDL/ipc-2004-satellite/problem-01.pddl diff --git a/instances/ipc-2004-satellite/problem-02.pddl b/instances/PDDL/ipc-2004-satellite/problem-02.pddl similarity index 100% rename from instances/ipc-2004-satellite/problem-02.pddl rename to instances/PDDL/ipc-2004-satellite/problem-02.pddl diff --git a/instances/ipc-2004-satellite/problem-03.pddl b/instances/PDDL/ipc-2004-satellite/problem-03.pddl similarity index 100% rename from instances/ipc-2004-satellite/problem-03.pddl rename to instances/PDDL/ipc-2004-satellite/problem-03.pddl diff --git a/instances/ipc-2004-satellite/solutions b/instances/PDDL/ipc-2004-satellite/solutions similarity index 100% rename from instances/ipc-2004-satellite/solutions rename to instances/PDDL/ipc-2004-satellite/solutions diff --git a/instances/ipc-2006-tpp-propositional/domain.pddl b/instances/PDDL/ipc-2006-tpp-propositional/domain.pddl similarity index 100% rename from instances/ipc-2006-tpp-propositional/domain.pddl rename to instances/PDDL/ipc-2006-tpp-propositional/domain.pddl diff --git a/instances/ipc-2006-tpp-propositional/problem-02.pddl b/instances/PDDL/ipc-2006-tpp-propositional/problem-02.pddl similarity index 100% rename from instances/ipc-2006-tpp-propositional/problem-02.pddl rename to instances/PDDL/ipc-2006-tpp-propositional/problem-02.pddl diff --git a/instances/ipc-2006-tpp-propositional/problem-03.pddl b/instances/PDDL/ipc-2006-tpp-propositional/problem-03.pddl similarity index 100% rename from instances/ipc-2006-tpp-propositional/problem-03.pddl rename to instances/PDDL/ipc-2006-tpp-propositional/problem-03.pddl diff --git a/instances/ipc-2006-tpp-propositional/problem-04.pddl b/instances/PDDL/ipc-2006-tpp-propositional/problem-04.pddl similarity index 100% rename from instances/ipc-2006-tpp-propositional/problem-04.pddl rename to instances/PDDL/ipc-2006-tpp-propositional/problem-04.pddl diff --git a/instances/ipc-2006-tpp-propositional/solutions b/instances/PDDL/ipc-2006-tpp-propositional/solutions similarity index 100% rename from instances/ipc-2006-tpp-propositional/solutions rename to instances/PDDL/ipc-2006-tpp-propositional/solutions