diff --git a/admin/api/settings.go b/admin/api/settings.go
index 40afef56..0ce7528b 100644
--- a/admin/api/settings.go
+++ b/admin/api/settings.go
@@ -2,6 +2,7 @@ package api
 
 import (
 	"encoding/json"
+	"errors"
 	"path"
 	"time"
 
@@ -16,6 +17,8 @@ var TeamsDir string
 func init() {
 	router.GET("/api/settings.json", apiHandler(getSettings))
 	router.PUT("/api/settings.json", apiHandler(saveSettings))
+
+	router.POST("/api/reset", apiHandler(reset))
 }
 
 func getSettings(_ httprouter.Params, body []byte) (interface{}, error) {
@@ -38,3 +41,22 @@ func saveSettings(_ httprouter.Params, body []byte) (interface{}, error) {
 		return config, err
 	}
 }
+
+func reset(_ httprouter.Params, body []byte) (interface{}, error) {
+	var m map[string]string
+	if err := json.Unmarshal(body, &m); err != nil {
+		return nil, err
+	}
+
+	if t, ok := m["type"]; !ok {
+		return nil, errors.New("Field type not found")
+	} else if t == "teams" {
+		return true, fic.ResetTeams()
+	} else if t == "challenges" {
+		return true, fic.ResetExercices()
+	} else if t == "game" {
+		return true, fic.ResetGame()
+	} else {
+		return nil, errors.New("Unknown reset type")
+	}
+}
diff --git a/admin/static/js/app.js b/admin/static/js/app.js
index 4e95ed68..bfdfda50 100644
--- a/admin/static/js/app.js
+++ b/admin/static/js/app.js
@@ -280,6 +280,13 @@ angular.module("FICApp")
 	    var f = new Date(ts + 120000 + this.duration * 60000);
 	    this.config.end = f.toISOString();
 	}
+	$scope.reset = function(type) {
+	    if (confirm("Êtes-vous sûr ?")) {
+		$http.post("/api/reset", {"type": type}).success(function(time) {
+		    $location.url("/");
+		});
+	    }
+	};
     })
 
     .controller("PublicController", function($scope, Scene, Theme, Teams, Exercice) {
diff --git a/admin/static/views/settings.html b/admin/static/views/settings.html
index 97aebc06..16e1d3b1 100644
--- a/admin/static/views/settings.html
+++ b/admin/static/views/settings.html
@@ -102,3 +102,9 @@
     <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-save" aria-hidden="true"></span> Propager ces paramètres</button>
   </div>
 </form>
+
+<div class="well">
+  <a ng-click="reset('challenges')" class="btn btn-warning" role="button"><span class="glyphicon glyphicon-trash" aria-hidden="true"></span> Effacer les challenges et les thèmes</a>
+  <a ng-click="reset('teams');" class="btn btn-warning" role="button"><span class="glyphicon glyphicon-trash" aria-hidden="true"></span> Effacer les équipes</a>
+  <a ng-click="reset('game');" class="btn btn-warning" role="button"><span class="glyphicon glyphicon-trash" aria-hidden="true"></span> Effacer la partie (tentatives, indices, ...)</a>
+</div>
diff --git a/libfic/reset.go b/libfic/reset.go
new file mode 100644
index 00000000..14215f87
--- /dev/null
+++ b/libfic/reset.go
@@ -0,0 +1,30 @@
+package fic
+
+import ()
+
+func truncateTable(tables ...string) (error) {
+	if _, err := DBExec("SET FOREIGN_KEY_CHECKS = 0;"); err != nil {
+		return err
+	}
+	for _, table := range tables {
+		if _, err := DBExec("TRUNCATE TABLE " + table + ";"); err != nil {
+			return err
+		}
+	}
+	if _, err := DBExec("SET FOREIGN_KEY_CHECKS = 1;"); err != nil {
+		return err
+	}
+	return nil
+}
+
+func ResetGame() (error) {
+	return truncateTable("team_hints", "key_found", "exercice_solved", "exercice_tries")
+}
+
+func ResetExercices() (error) {
+	return truncateTable("team_hints", "exercice_files", "key_found", "exercice_keys", "exercice_solved", "exercice_tries", "exercice_hints", "exercices", "themes")
+}
+
+func ResetTeams() (error) {
+	return truncateTable("team_hints", "key_found", "exercice_solved", "exercice_tries", "team_members", "teams")
+}