diff --git a/app/src/main/java/sudoku/constraint/BlockConstraint.java b/app/src/main/java/sudoku/constraint/BlockConstraint.java
index 2ea7d66..fb5d891 100644
--- a/app/src/main/java/sudoku/constraint/BlockConstraint.java
+++ b/app/src/main/java/sudoku/constraint/BlockConstraint.java
@@ -3,6 +3,9 @@ package sudoku.constraint;
 import sudoku.structure.Block;
 import sudoku.structure.Sudoku;
 
+/**
+ * Contrainte de bloc
+ */
 public class BlockConstraint implements IConstraint{
 
 	@Override
diff --git a/app/src/main/java/sudoku/constraint/ColumnConstraint.java b/app/src/main/java/sudoku/constraint/ColumnConstraint.java
index 19d3aff..2affbcd 100644
--- a/app/src/main/java/sudoku/constraint/ColumnConstraint.java
+++ b/app/src/main/java/sudoku/constraint/ColumnConstraint.java
@@ -3,6 +3,9 @@ package sudoku.constraint;
 import sudoku.structure.Cell;
 import sudoku.structure.Sudoku;
 
+/**
+ * Contrainte de colonne
+ */
 public class ColumnConstraint implements IConstraint {
 
 	@Override
diff --git a/app/src/main/java/sudoku/constraint/Constraint.java b/app/src/main/java/sudoku/constraint/Constraint.java
index 14b7c3d..df4c449 100644
--- a/app/src/main/java/sudoku/constraint/Constraint.java
+++ b/app/src/main/java/sudoku/constraint/Constraint.java
@@ -1,9 +1,9 @@
 package sudoku.constraint;
 
-import java.util.List;
-
-import sudoku.structure.Sudoku;
-
+/**
+ * Enumération utilisée afin de simplifier l'affichage en graphique.
+ * Un sudoku peut tout de même contenir des contraintes qui ne sont pas dans cette énumération.
+ */
 public enum Constraint {
 
 	Block("Bloc", new BlockConstraint()),
@@ -19,14 +19,6 @@ public enum Constraint {
 		this.displayName = displayName;
 	}
 
-	public boolean canBePlaced(Sudoku s, int x, int y, int newValue) {
-		return getConstraint().canBePlaced(s, x, y, newValue);
-	}
-
-	public List<Integer> getPossibleSymbols(final Sudoku s, int x, int y) {
-		return getConstraint().getPossibleSymbols(s, x, y);
-	}
-
 	public String getDisplayName() {
 		return displayName;
 	}
diff --git a/app/src/main/java/sudoku/constraint/DiagonalConstraint.java b/app/src/main/java/sudoku/constraint/DiagonalConstraint.java
index 95d6842..50aed9c 100644
--- a/app/src/main/java/sudoku/constraint/DiagonalConstraint.java
+++ b/app/src/main/java/sudoku/constraint/DiagonalConstraint.java
@@ -2,6 +2,9 @@ package sudoku.constraint;
 
 import sudoku.structure.Sudoku;
 
+/**
+ * Contrainte de diagonale
+ */
 public class DiagonalConstraint implements IConstraint {
 
 	@Override
diff --git a/app/src/main/java/sudoku/constraint/IConstraint.java b/app/src/main/java/sudoku/constraint/IConstraint.java
index 5bd082f..453c02c 100644
--- a/app/src/main/java/sudoku/constraint/IConstraint.java
+++ b/app/src/main/java/sudoku/constraint/IConstraint.java
@@ -1,22 +1,12 @@
 package sudoku.constraint;
 
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.List;
-
 import sudoku.structure.Sudoku;
 
-public interface IConstraint extends Serializable {
+/**
+ * Interface de base pour la déclaration d'une contrainte
+ * Elle est en théorie assez générique pour implémenter n'importe quelle
+ * contrainte
+ */
+public interface IConstraint {
 	boolean canBePlaced(final Sudoku s, int x, int y, int newSymbolIndex);
-
-	default List<Integer> getPossibleSymbols(final Sudoku s, int x, int y) {
-		List<Integer> possibilities = new ArrayList<>();
-		for (int i = 0; i < s.getSize(); i++) {
-			if (canBePlaced(s, x, y, i)) {
-				possibilities.add(i);
-			}
-		}
-		return possibilities;
-	}
-
 }
diff --git a/app/src/main/java/sudoku/constraint/LineConstraint.java b/app/src/main/java/sudoku/constraint/LineConstraint.java
index 694b24f..cd39e13 100644
--- a/app/src/main/java/sudoku/constraint/LineConstraint.java
+++ b/app/src/main/java/sudoku/constraint/LineConstraint.java
@@ -2,6 +2,9 @@ package sudoku.constraint;
 
 import sudoku.structure.Sudoku;
 
+/**
+ * Contrainte de ligne
+ */
 public class LineConstraint implements IConstraint {
 
 	@Override