diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..5a1a22b
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,6 @@
+ACTUAL_ENV=dev
+DB_USER=root
+DB_PASSWORD=password
+DB_NAME=battleship
+DB_HOST=localhost
+COOKIE_SECRET_KEY=secret_key
diff --git a/.gitignore b/.gitignore
index dc2aa9e..9ab71ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,7 @@ node_modules/
 nginx.conf
 nginx/
 secrets/
+.env
+.env.*
+
+!.env.example
\ No newline at end of file
diff --git a/public/scripts/game.js b/public/scripts/game.js
index 1a0db50..9ad7de8 100644
--- a/public/scripts/game.js
+++ b/public/scripts/game.js
@@ -213,6 +213,18 @@ function validMoove(player, piece, movement) {
           isValid = false;
         if (!p.vertical && movement.selectedCase.y + p.size > 10)
           isValid = false;
+
+        let head = p.startPos
+        let tail = { x: (p.startPos.x + p.size), y: p.startPos.y}
+
+        for (let x = head.x; x <= tail.x; x++) {
+          if (
+            player.grid.cases[x][tail.y].isShip &&
+            player.grid.cases[x][tail.y].piece.id !== p.id
+          ) {
+            isValid = false
+          }
+        }
       }
     }
   });