diff --git a/src/othello/Main.java b/src/othello/Main.java
index 3cfbef2..8c9a26b 100644
--- a/src/othello/Main.java
+++ b/src/othello/Main.java
@@ -7,8 +7,8 @@ public class Main {
 
 
 	public static void main(String[] args) {
-		Player p1 = new NegamaxPlayer(4);
-		Player p2 = new NegamaxPlayer(4);
+		Player p1 = new NegamaxPlayer(3);
+		Player p2 = new NegamaxPlayer(2);
 		Player[][] board = initialize(p1, p2);
 		State game = new State(board, p1, p2);
 		System.out.println("joueur 1: " + p1);
@@ -22,6 +22,7 @@ public class Main {
 		System.out.println(game.getWinner() + " a gagné la partie");
 		System.out.println(game.getScore(p1));
 		System.out.println(game.getScore(p2));
+
 	}
 	
 	public static Player[][] initialize(Player p1, Player p2){
diff --git a/src/othello/State.java b/src/othello/State.java
index 92de7d1..3fb841d 100644
--- a/src/othello/State.java
+++ b/src/othello/State.java
@@ -107,18 +107,19 @@ public class State {
 		return currentPlayer;
 	}
 
-	public void setCurrentPlayer(Player currentPlayer) {
-		this.currentPlayer = currentPlayer;
+	public void setCurrentPlayer(Player player) {
+		this.currentPlayer = player;
 	}
 
 	public State copy () {
-		State copy = new State(this.board, this.player1, this.player2);
+		State copy = new State(new Player[7][7], this.player1, this.player2);
 		for (int i = 0; i < this.board.length; i++) {
-			System.arraycopy(this.board[i], 0, copy.board[i], 0, this.board.length);
+			System.arraycopy(this.board[i], 0, copy.board[i], 0, this.board[i].length);
 		}
-		copy.setCurrentPlayer(this.currentPlayer);
+		copy.setCurrentPlayer(this.getCurrentPlayer());
 		copy.n1 = n1;
 		copy.n2 = n2;
+
 		return copy;
 	}
 	
@@ -150,7 +151,8 @@ public class State {
 	public boolean equals(Object state) {
 		boolean bool;
 		bool = ( state instanceof State);
-		bool = bool && (this.getCurrentPlayer() ==  ((State) state).getCurrentPlayer()) && (this.player1 == ((State) state).player1) && (this.player2 == ((State) state).player2);
+		bool = bool && (this.getCurrentPlayer().equals(((State) state).getCurrentPlayer()));
+		bool = bool && (this.player1.equals(((State) state).player1)) && (this.player2.equals(((State) state).player2));
 		bool = bool && (this.n1 == ((State)state).n1)&& (this.n2 == ((State)state).n2);
 		for (int i = 0; i < this.board.length; i++) {
 			for (int y = 0; y < this.board.length; y++){
diff --git a/src/othello/players/NegamaxPlayer.java b/src/othello/players/NegamaxPlayer.java
index ac90df6..678fc22 100644
--- a/src/othello/players/NegamaxPlayer.java
+++ b/src/othello/players/NegamaxPlayer.java
@@ -43,8 +43,12 @@ public class NegamaxPlayer extends Player {
         if(winner == null)
             return 0;
         else if(winner == game.getCurrentPlayer())
-            return 1;
-        return -1;
+            return -1;
+        return 1;
     }
 
+    @Override
+    public boolean equals(Object obj) {
+        return (obj instanceof NegamaxPlayer);
+    }
 }