Fix #4

app/src/main/java/gui/menu/MultiPlayerView.java

@@ -1,9 +1,12 @@
 package gui.menu;
 
+import java.util.Arrays;
+
 import game.Player;
 import imgui.ImGui;
 import network.client.Client;
 import network.server.Server;
+import sudoku.constraint.Constraint;
 import sudoku.structure.MultiDoku;
 import sudoku.structure.SudokuFactory;
 
@@ -37,7 +40,7 @@ public class MultiPlayerView extends BaseView {
 		} else {
 			if (ImGui.button("Démarrer")) {
 				// temp
-				MultiDoku doku = SudokuFactory.createBasicXShapedMultidoku(3, SudokuFactory.DEFAULT_CONSTRAINTS);
+				MultiDoku doku = SudokuFactory.createBasicXShapedMultidoku(3, Arrays.asList(Constraint.Diagonal));
 				this.server.startGame(doku);
 			}
 		}