diff --git a/src/main/java/laboratoire4/GameTree.java b/src/main/java/laboratoire4/GameTree.java
index 0502068..68e88b2 100644
--- a/src/main/java/laboratoire4/GameTree.java
+++ b/src/main/java/laboratoire4/GameTree.java
@@ -5,6 +5,11 @@ import java.util.Collection;
 public class GameTree {
     private Node root;
 
+
+    public Node buildTree(){
+        return null;
+    }
+
     public Node getRoot() {
         return root;
     }
@@ -20,4 +25,5 @@ public class GameTree {
             return childs;
         }
     }
+
 }
diff --git a/src/main/java/laboratoire4/MiniMax.java b/src/main/java/laboratoire4/MiniMax.java
index 91c7028..e3cab45 100644
--- a/src/main/java/laboratoire4/MiniMax.java
+++ b/src/main/java/laboratoire4/MiniMax.java
@@ -45,5 +45,6 @@ public class MiniMax {
 
     private static int evaluate(GameTree.Node node) {
 
+        return 0;
     }
 }
diff --git a/src/main/java/laboratoire4/Pawn.java b/src/main/java/laboratoire4/Pawn.java
new file mode 100644
index 0000000..10bb29e
--- /dev/null
+++ b/src/main/java/laboratoire4/Pawn.java
@@ -0,0 +1,8 @@
+package laboratoire4;
+
+public enum Pawn {
+    R_PUSHER,
+    R_PUSHED,
+    B_PUSHER,
+    B_PUSHED
+}
diff --git a/src/main/java/laboratoire4/PusherBoard.java b/src/main/java/laboratoire4/PusherBoard.java
new file mode 100644
index 0000000..369dfd6
--- /dev/null
+++ b/src/main/java/laboratoire4/PusherBoard.java
@@ -0,0 +1,87 @@
+package laboratoire4;
+
+public class PusherBoard {
+
+    private Pawn[][] board;
+
+    public PusherBoard() {
+        this.newGame();
+    }
+
+    public void newGame(){
+        this.board = new Pawn[8][8];
+
+        for(int i = 0 ;i<board.length;i++){
+            board[7][i] = Pawn.B_PUSHER;
+        }
+
+        for(int i = 0 ;i<board.length;i++){
+            board[6][i] = Pawn.B_PUSHED;
+        }
+
+        for(int i = 0 ;i<board.length;i++){
+            board[1][i] = Pawn.R_PUSHED;
+        }
+
+        for(int i = 0 ;i<board.length;i++){
+            board[0][i] = Pawn.R_PUSHER;
+        }
+    }
+
+    public int move (String move){
+        //FORMAT ex : D2-D3
+        String[] split = move.split("-");
+
+        return move(split[0],split[1]);
+    }
+
+    public int move (String from, String to){
+        //FORMAT ex : from {D2}, to {D3}
+        int from_i = (int) from.charAt(0) - 65;
+        int from_j = Integer.parseInt(String.valueOf(from.charAt(1)))-1;
+        int to_i = (int) to.charAt(0) - 65;
+        int to_j = Integer.parseInt(String.valueOf(to.charAt(1)))-1;
+
+        return move(from_i, from_j, to_i, to_j);
+    }
+
+    public int move(int from_i, int from_j, int to_i, int to_j){
+        //FORMAT ex : from_i {3}, from_j {2}, to_i {3}, to_j {3}
+
+        System.out.println("Move :" + from_i+""+from_j + "-"+ to_i+""+to_j);
+        if(isValid(from_i,from_j,to_i,to_j)){
+            Pawn pawn = this.getBoard()[from_j][from_i];
+            System.out.println("Pawn (0,0) :" + this.getBoard()[1][0]);
+            System.out.println("Pawn to move : " + pawn);
+            this.getBoard()[from_j][from_i] = null;
+            this.getBoard()[to_j][to_i] = pawn;
+        }
+
+        return -1;
+    }
+
+
+    private boolean isValid(int from_i, int from_j, int to_i, int to_j){
+        //TODO
+        return true;
+    }
+
+    public Pawn[][] getBoard() {
+        return board;
+    }
+
+    public void printBoard(){
+
+        for(int i=7; i>=0; i--){
+            for (int j = 0 ; j < this.board.length; j++){
+                if(this.board[i][j] != null){
+                    System.out.print(this.board[i][j] + " | ");
+                }else{
+                    System.out.print("         | ");
+                }
+            }
+            System.out.println();
+            System.out.println("----------------------------------------------------------------------------------------");
+        }
+    }
+}
diff --git a/src/main/java/laboratoire4/Test.java b/src/main/java/laboratoire4/Test.java
new file mode 100644
index 0000000..9bf5a91
--- /dev/null
+++ b/src/main/java/laboratoire4/Test.java
@@ -0,0 +1,14 @@
+package laboratoire4;
+
+public class Test {
+    public static void main(String[] args) {
+        PusherBoard pusherBoard = new PusherBoard();
+        //Move examples
+        pusherBoard.move("D2","D3");
+        pusherBoard.move("C2","C3");
+        pusherBoard.move("D1","D2");
+        pusherBoard.move("D2","E3");
+
+        pusherBoard.printBoard();
+    }
+}