diff --git a/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php b/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php
index fe262318e..141ca049d 100644
--- a/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php
+++ b/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php
@@ -126,6 +126,7 @@ final class SingleTaskController extends AbstractController
                 }
 
                 $task->setPerson($person);
+                $role = TaskVoter::CREATE_PERSON;
                 break;
             case 'course':
                 $course = $this->getDoctrine()->getManager()
@@ -137,15 +138,16 @@ final class SingleTaskController extends AbstractController
                 }
 
                 $task->setCourse($course);
+                $role = TaskVoter::CREATE_COURSE;
                 break;
             default:
                 return new BadRequestHttpException("context with {$entityType} is not supported");
         }
 
-        $this->denyAccessUnlessGranted(TaskVoter::CREATE, $task, 'You are not '
+        $this->denyAccessUnlessGranted($role, $task, 'You are not '
              . 'allowed to create this task');
 
-        $form = $this->setCreateForm($task, new Role(TaskVoter::CREATE));
+        $form = $this->setCreateForm($task, new Role($role));
 
         $form->handleRequest($request);
 
@@ -266,8 +268,8 @@ final class SingleTaskController extends AbstractController
                 $this->addFlash('success', $this->translator
                     ->trans("The task has been updated"));
 
-                if ($person = $task->getContext() instanceof Person) {
-                    $event = new PrivacyEvent($person, array(
+                if ($task->getContext() instanceof Person) {
+                    $event = new PrivacyEvent($task->getPerson(), array(
                     'element_class' => SingleTask::class,
                     'element_id' => $task->getId(),
                     'action' => 'update'
@@ -301,8 +303,8 @@ final class SingleTaskController extends AbstractController
             return $event->getResponse();
         }
 
-        if ($person = $task->getContext() instanceof Person) {
-            $event = new PrivacyEvent($person, array(
+        if ($task->getContext() instanceof Person) {
+            $event = new PrivacyEvent($task->getPerson(), array(
                 'element_class' => SingleTask::class,
                 'element_id' => $task->getId(),
                 'action' => 'edit'
@@ -511,7 +513,7 @@ final class SingleTaskController extends AbstractController
      * Arguments:
      *  - user_id
      *  - scope_id
-     *  - course_id
+     *  - s
      *  - person_id
      *  - hide_form (hide the form to filter the tasks)
      *  - status: date state, amongst SingleTaskRepository::DATE_STATUSES, or 'closed'
@@ -522,212 +524,44 @@ final class SingleTaskController extends AbstractController
      * )
      */
     public function listAction(
-        PaginatorFactory $paginatorFactory,
-        SingleTaskRepository $taskRepository,
-        PersonRepository $personRepository,
-        AccompanyingPeriodRepository $courseRepository,
-        CenterRepository $centerRepository,
-        FormFactoryInterface $formFactory,
         Request $request
     ) {
-        /* @var $viewParams array The parameters for the view */
-        /* @var $params array The parameters for the query */
+        $this->denyAccessUnlessGranted(TaskVoter::SHOW, null);
 
-        $viewParams['person'] = null;
-        $params['person'] = null;
-        $viewParams['user'] = null;
-        $params['user'] = null;
-        $viewParams['center'] = null;
-        $params['types'] = null;
-        $viewParams['accompanyingCourse'] = null;
-        $params['accompanyingCourse'] = null;
+        $filterOrder = $this->buildFilterOrder();
+        $flags = \array_merge(
+            $filterOrder->getCheckboxData('status'),
+            \array_map(fn ($i) => 'state_'.$i, $filterOrder->getCheckboxData('states'))
+        );
+        $nb = $this->singleTaskAclAwareRepository->countByAllViewable(
+            $filterOrder->getQueryString(),
+            $flags
+        );
+        $paginator = $this->paginatorFactory->create($nb);
 
-        if (!empty($request->query->get('person_id', NULL))) {
-
-            $personId = $request->query->getInt('person_id', 0);
-            $person = $personRepository->find($personId);
-
-            if ($person === null) {
-                 throw $this->createNotFoundException("This person ' $personId ' does not exist.");
-            }
-            $this->denyAccessUnlessGranted(PersonVoter::SEE, $person);
-
-            $viewParams['person'] = $person;
-            $params['person'] = $person;
-        }
-
-        if (!empty($request->query->get('course_id', NULL))) {
-
-            $courseId = $request->query->getInt('course_id', 0);
-            $course = $courseRepository->find($courseId);
-
-            if ($course === null) {
-                 throw $this->createNotFoundException("This accompanying course ' $courseId ' does not exist.");
-            }
-            $this->denyAccessUnlessGranted(AccompanyingPeriodVoter::SEE, $course);
-
-            $viewParams['accompanyingCourse'] = $course;
-            $params['accompanyingCourse'] = $course;
-        }
-
-        if (!empty($request->query->get('center_id', NULL))) {
-            $center = $centerRepository->find($request->query->getInt('center_id'));
-            if ($center === null) {
-                throw $this->createNotFoundException('center not found');
-            }
-            $params['center'] = $center;
-        }
-
-        if(!empty($request->query->get('types', []))) {
-            $types = $request->query->get('types', []);
-            if (count($types) > 0) {
-                $params['types'] = $types;
-            }
-        }
-
-        if (!empty($request->query->get('user_id', null))) {
-            if ($request->query->get('user_id') === '_unassigned') {
-                $params['unassigned'] = true;
-            } else {
-
-                $userId = $request->query->getInt('user_id', 0);
-                $user = $this->getDoctrine()->getManager()
-                    ->getRepository(User::class)
-                    ->find($userId);
-
-                if ($user === null) {
-                     throw $this->createNotFoundException("This user ' $userId ' does not exist.");
-                }
-
-                $viewParams['user'] = $user;
-                $params['user'] = $user;
-            }
-        }
-
-        if (!empty($request->query->get('scope_id'))) {
-
-            $scopeId = $request->query->getInt('scope_id', 0);
-
-            $scope = $this->getDoctrine()->getManager()
-                ->getRepository(Scope::class)
-                ->find($scopeId);
-
-            if ($scope === null) {
-                 throw $this->createNotFoundException("This scope' $scopeId 'does not exist.");
-            }
-
-            $viewParams['scope'] = $scope;
-            $params['scope'] = $scope;
-        }
-
-        $possibleStatuses = \array_merge(SingleTaskRepository::DATE_STATUSES, [ 'closed' ]);
-        $statuses = $request->query->get('status', $possibleStatuses);
-
-        $diff = \array_diff($statuses, $possibleStatuses);
-        if (count($diff) > 0) {
-            return new Response(
-                'date_status not allowed: '. \implode(', ', $diff),
-                 Response::HTTP_BAD_REQUEST
-                );
-        }
-
-        $viewParams['isSingleStatus'] = $singleStatus = count($statuses) === 1;
-
-        $tasks_count = 0;
-
-        foreach($statuses as $status) {
-            if($request->query->has('status')
-                && FALSE === \in_array($status, $statuses)) {
-                continue;
-            }
-
-            if (in_array($status, SingleTaskRepository::DATE_STATUSES)) {
-                $params['date_status'] = $status;
-                $params['is_closed']   = false;
-            } else {
-                $params['date_status'] = null;
-                $params['is_closed']   = true;
-            }
-
-            $count = $taskRepository
-                ->countByParameters($params, $this->getUser())
-                ;
-            $paginator = $paginatorFactory->create($count);
-
-            $viewParams['single_task_'.$status.'_count'] = $count;
-            $viewParams['single_task_'.$status.'_paginator'] = $paginator;
-            $viewParams['single_task_'.$status.'_tasks'] = $taskRepository
-                ->findByParameters($params, $this->getUser(),
-                    $singleStatus ? $paginator->getCurrentPage()->getFirstItemNumber() : 0,
-                    $singleStatus ? $paginator->getItemsPerPage() : 10)
-                ;
-
-            $tasks_count = $tasks_count + $count;
-        }
-
-        $viewParams['tasks_count'] = $tasks_count;
-
-        if ($viewParams['person'] !== null){
-            $viewParams['layout'] = '@ChillPerson/Person/layout.html.twig';
-        } else if ($viewParams['accompanyingCourse'] !== null){
-            $viewParams['layout'] = '@ChillPerson/AccompanyingCourse/layout.html.twig';
+        if (0 < $nb) {
+            $tasks = $this->singleTaskAclAwareRepository->findByAllViewable(
+                $filterOrder->getQueryString(),
+                $flags,
+                $paginator->getCurrentPageFirstItemNumber(),
+                $paginator->getItemsPerPage(),
+                [
+                    'startDate' => 'DESC',
+                    'endDate' => 'DESC',
+                ]
+            );
         } else {
-            $viewParams['layout'] = '@ChillMain/layout.html.twig';
+            $tasks = [];
         }
 
-        $form = $formFactory->createNamed(null, SingleTaskListType::class, null, [
-            'person' => $viewParams['person'],
-            'method' => Request::METHOD_GET,
-            'csrf_protection' => false,
-            'add_type' => true
-        ]);
+        return $this->render('@ChillTask/SingleTask/List/index.html.twig', [
+                'tasks' => $tasks,
+                'paginator' => $paginator,
+                'filter_order' => $filterOrder
+            ]);
 
-        $form->handleRequest($request);
-
-        if (isset($person)) {
-            $event = new PrivacyEvent($person, array(
-                'element_class' => SingleTask::class,
-                'action' => 'list'
-            ));
-            $this->eventDispatcher->dispatch(PrivacyEvent::PERSON_PRIVACY_EVENT, $event);
-        }
-
-        return $this->render('@ChillTask/SingleTask/index.html.twig',
-            array_merge($viewParams, [ 'form' => $form->createView() ]));
     }
 
-
-    /*
-    protected function getPersonParam(EntityManagerInterface $em)
-    {
-        $person = $em->getRepository(Person::class)
-            ->find($request->query->getInt('person_id'))
-            ;
-
-        if (NULL === $person) {
-            throw $this->createNotFoundException('person not found');
-        }
-
-        $this->denyAccessUnlessGranted(PersonVoter::SEE, $person, "You are "
-            . "not allowed to see this person");
-
-        return $person;
-    }
-
-    protected function getUserParam(EntityManagerInterface $em)
-    {
-        $user = $em->getRepository(User::class)
-            ->find($request->query->getInt('user_id'))
-            ;
-
-        if (NULL === $user) {
-            throw $this->createNotFoundException('user not found');
-        }
-
-        return $user;
-    }
-     */
-
     /**
      * Creates a form to delete a Task entity by id.
      *
diff --git a/src/Bundle/ChillTaskBundle/Entity/SingleTask.php b/src/Bundle/ChillTaskBundle/Entity/SingleTask.php
index c22f47361..cef59a10a 100644
--- a/src/Bundle/ChillTaskBundle/Entity/SingleTask.php
+++ b/src/Bundle/ChillTaskBundle/Entity/SingleTask.php
@@ -19,6 +19,10 @@ use Doctrine\Common\Collections\Collection;
  *     @ORM\Index(
  *        name="by_current_state",
  *        columns={ "current_states" }
+ *     ),
+ *     @ORM\Index(
+ *        name="by_end_date",
+ *        columns={ "end_date" }
  *     )
  *   }
  * )
diff --git a/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php b/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php
index c97ea3549..c728096cb 100644
--- a/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php
+++ b/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepository.php
@@ -106,6 +106,31 @@ final class SingleTaskAclAwareRepository implements SingleTaskAclAwareRepository
             ->getQuery()->getSingleScalarResult();
     }
 
+    public function countByAllViewable(
+        ?string $pattern = null,
+        ?array $flags = []
+    ): int {
+        $qb = $this->buildBaseQuery($pattern, $flags);
+
+        return $this
+            ->addACLGlobal($qb)
+            ->select('COUNT(t)')
+            ->getQuery()->getSingleScalarResult();
+    }
+
+    public function findByAllViewable(
+        ?string $pattern = null,
+        ?array $flags = [],
+        ?int $start = 0,
+        ?int $limit = 50,
+        ?array $orderBy = []
+    ): array {
+        $qb = $this->buildBaseQuery($pattern, $flags);
+        $qb = $this->addACLGlobal($qb);
+
+        return $this->getResult($qb, $start, $limit, $orderBy);
+    }
+
     public function buildQueryByCourse(
         AccompanyingPeriod $course,
         ?string $pattern = null,
@@ -175,6 +200,50 @@ final class SingleTaskAclAwareRepository implements SingleTaskAclAwareRepository
            ->setParameter('scopes', $scopes);
     }
 
+    private function addACLGlobal(
+        QueryBuilder $qb
+    ): QueryBuilder {
+        $allowedCenters = $this->authorizationHelper
+            ->getReachableCenters($this->security->getUser(), TaskVoter::SHOW);
+
+        if ([] === $allowedCenters) {
+            $qb
+                ->andWhere($qb->expr()->lt('t.id', ':falseid'))
+                ->setParameter('falseid', -1);
+        }
+
+        $qb->leftJoin('t.person', 'person')
+            ->leftJoin('t.course', 'course')
+            ->leftJoin('course.participations', 'participation')
+            ->leftJoin('participation.person', 'person_p')
+            ;
+        $qb->distinct(true);
+
+        $k = 0;
+        $orX = $qb->expr()->orX();
+        foreach ($allowedCenters as $center) {
+            $allowedScopes = $this->authorizationHelper->getReachableScopes($this->security->getUser(),
+                TaskVoter::SHOW, $center);
+
+            $and = $qb->expr()->andX(
+                $qb->expr()->orX(
+                    $qb->expr()->eq('person.center', ':center_'.$k),
+                    $qb->expr()->eq('person_p.center', ':center_'.$k)
+                ),
+                $qb->expr()->in('t.circle', ':scopes_'.$k)
+            );
+            $qb
+                ->setParameter('center_'.$k, $center)
+                ->setParameter('scopes_'.$k, $allowedScopes);
+            $orX->add($and);
+
+            $k++;
+        }
+        $qb->andWhere($orX);
+
+        return $qb;
+    }
+
     public function buildBaseQuery (
         ?string $pattern = null,
         ?array $flags = []
diff --git a/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepositoryInterface.php b/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepositoryInterface.php
index 0c6f4fc57..58532daa0 100644
--- a/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepositoryInterface.php
+++ b/src/Bundle/ChillTaskBundle/Repository/SingleTaskAclAwareRepositoryInterface.php
@@ -40,4 +40,17 @@ interface SingleTaskAclAwareRepositoryInterface
         ?string $pattern = null,
         ?array $flags = []
     ): int;
+
+    public function countByAllViewable(
+        ?string $pattern = null,
+        ?array $flags = []
+    ): int;
+
+    public function findByAllViewable(
+        ?string $pattern = null,
+        ?array $flags = [],
+        ?int $start = 0,
+        ?int $limit = 50,
+        ?array $orderBy = []
+    ): array;
 }