diff --git a/html/StupidIABattleship.php b/html/StupidIABattleship.php
index 66b75e1..39d2f65 100644
--- a/html/StupidIABattleship.php
+++ b/html/StupidIABattleship.php
@@ -1,5 +1,28 @@
 <?php
-/*
+function is_it_possible_to_place_ships_on_grid($gridWidth,$gridHeight,$nbShipsSize1,$nbShipsSize2,$nbShipsSize3,$nbShipsSize4,$nbShipsSize5,$nbShipsSize6){
+  //return false or true
+  //not a perfect solution
+  $shipsArea=$nbShipsSize1 + 2 * $nbShipsSize2 + 3 * $nbShipsSize3 + 4 * $nbShipsSize4 + 5 * $nbShipsSize5 + 6 * $nbShipsSize6;
+  if( $shipsArea < $gridHeight * $gridwidth / 2){
+    return false;
+  }
+  //longest ship
+  for($i=6; $i > 0; $i--){
+    $var='nbShipsSize'.$i;
+    if($$var > 0){
+        $longestShip=$$var;
+        break;
+    }
+  }
+  if( (!isset($longestShip))
+       OR(($longestShip > $gridWidth) && ($longestShip > $gridHeight))
+  ){
+    return false;
+  }
+  return true;
+}
+
+
 function place_ship_on_map($x1,$y1,$x2,$y2,$map){
   if ((($x1 <> $x2) && ($y1 <> $y2))
     OR (!isset($map[$y1][$x1]))
@@ -68,13 +91,20 @@ switch($_POST['act']){
         if(!preg_match('/^[0-9]+-(1|2)$/',$match_id)){
 	  echo "parametre incorrect"; die;
         }
+        
+        if(!is_it_possible_to_place_ships_on_grid($width,$height,$ship1,$ship2,$ship3,$ship4,$ship5,$ship6)){
+	  echo "I don't want play this game";
+	  die;
+        }
+        
+        
         $map=array();
         //construire une grille
         for($i=0; $i < $width; $i++){
 	  for($j=0; $j < $height; $j++){
 	    $map[$j][$i]=0;
 	  }
-        }  
+        }
         
         $shipsCoords=array();
         
@@ -132,9 +162,7 @@ switch($_POST['act']){
                         break;
                     }                    
                 }
-                
-                
-                
+                  
                 $directions=array();
                 if($top){
                     $directions[]='top';
@@ -173,7 +201,7 @@ switch($_POST['act']){
 
 	  }
         }
-        print_r($map);
+        //print_r($map);
         echo json_encode($shipsCoords);
         break;
     default: