diff --git a/src/main.rs b/src/main.rs
index e975410..1f729e9 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -30,16 +30,6 @@ impl TryFrom<String> for Item {
     }
 }
 
-impl Item {
-    fn next(&self) -> Self {
-        match self {
-            Item::X => Item::O,
-            Item::O => Item::X,
-            Item::Empty => Item::Empty,
-        }
-    }
-}
-
 /// In order to visualize the board game
 trait Displayer {
     fn show(&self);
@@ -225,20 +215,6 @@ impl Player {
     fn new(item: Item, is_bot: bool) -> Self {
         Player { item, is_bot }
     }
-
-    fn as_bot() -> Self {
-        Player {
-            item: Item::Empty,
-            is_bot: true,
-        }
-    }
-
-    fn as_human() -> Self {
-        Player {
-            item: Item::Empty,
-            is_bot: false,
-        }
-    }
 }
 
 impl Default for Player {
@@ -385,7 +361,7 @@ impl TicTacToe {
                 }
             }
 
-            self.set_players_item();
+            self.set_players_item().unwrap();
             break;
         }
     }
@@ -433,7 +409,7 @@ impl TicTacToe {
             }
         }
 
-        // for now, use a dummy bot
+        // for now, use a dump bot
         let mut rng = rand::thread_rng();
         let mut available_indexes = self.board.get_available_indexes();
         available_indexes.shuffle(&mut rng);
@@ -441,19 +417,6 @@ impl TicTacToe {
         Ok(available_indexes[0] + 1)
     }
 
-    /// minimax algorithm used by the bot player to find the best move (minimizing the loses)
-    fn minimax(&self, board: Option<Board>, player: Player, depth: usize) -> usize {
-        let mut board = match board {
-            Some(b) => b,
-            None => self.board.clone(),
-        };
-        let availables_indexes = board.get_available_indexes();
-        for index in availables_indexes {
-            board.set_item(player.item, index);
-        }
-        0
-    }
-
     fn run(&mut self) {
         self.select_game_type();
         self.select_first_player();