diff --git a/board-network/src/protocol.rs b/board-network/src/protocol.rs
index 7ebc34f..ceac38c 100644
--- a/board-network/src/protocol.rs
+++ b/board-network/src/protocol.rs
@@ -1,5 +1,4 @@
-use crate::types::{Position2dRef, TileRef};
-use board_shared::{position::Position2d, tile::Tile};
+use crate::types::{BoardRef, Position2dRef, TileRef};
 use serde::{Deserialize, Serialize};
 
 /// A message sent by the client to the server.
@@ -20,9 +19,9 @@ pub enum ClientMessage {
     /// Try to place a tile from the hand on the board.
     ///
     /// The server will validate the move and answer with a TilePlaced if the message is valid.
-    TileUse(#[serde(with = "Position2dRef")] Position2d, usize),
+    TileUse(Position2dRef, usize),
     /// Try to remove a tile from the board to add it to the hand.
-    TileTake(#[serde(with = "Position2dRef")] Position2d),
+    TileTake(Position2dRef),
     /// Get the server to validate the current player moves.
     Validate,
 }
@@ -34,6 +33,7 @@ pub enum ServerMessage {
     JoinedRoom {
         room_name: String,
         players: Vec<(String, u32, bool)>,
+        board: BoardRef,
         active_player: usize,
         has_started: bool,
     },
@@ -48,13 +48,10 @@ pub enum ServerMessage {
     /// Change the current player
     PlayerTurn(usize),
     /// Update the current hand of the player
-    SyncHand(#[serde(with = "TileRef")] Tile), // TODO: Vec<Tile>
+    SyncHand(Vec<TileRef>),
     /// Informs that a tile has been placed
-    TilePlaced(
-        #[serde(with = "Position2dRef")] Position2d,
-        #[serde(with = "TileRef")] Tile,
-    ),
+    TilePlaced(Position2dRef, TileRef),
     /// Informs that a tile has been removed
-    TileRemoved(#[serde(with = "Position2dRef")] Position2d),
+    TileRemoved(Position2dRef),
     TurnRejected(String),
 }
diff --git a/board-network/src/types.rs b/board-network/src/types.rs
index f6ecc51..f326d02 100644
--- a/board-network/src/types.rs
+++ b/board-network/src/types.rs
@@ -1,17 +1,25 @@
-use board_shared::position::Position2d;
-use board_shared::tile::{Digit, Operator, Tile};
+use board_shared::{
+    board::Board,
+    position::{Grid2d, Position2d},
+    tile::{Digit, Operator, Tile},
+};
 use serde::{Deserialize, Serialize};
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(remote = "Tile")]
+pub struct BoardRef {
+    pub tiles: Vec<Option<TileRef>>,
+    pub width: usize,
+    pub height: usize,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub enum TileRef {
-    Digit(#[serde(with = "DigitRef")] Digit),
-    Operator(#[serde(with = "OperatorRef")] Operator),
+    Digit(DigitRef),
+    Operator(OperatorRef),
     Equals,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(remote = "Digit")]
 pub struct DigitRef {
     pub value: i8,
     pub has_left_parenthesis: bool,
@@ -19,7 +27,6 @@ pub struct DigitRef {
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(remote = "Operator")]
 pub enum OperatorRef {
     Add,
     Subtract,
@@ -28,8 +35,69 @@ pub enum OperatorRef {
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(remote = "Position2d")]
 pub struct Position2dRef {
     pub x: usize,
     pub y: usize,
 }
+
+impl From<&Board> for BoardRef {
+    fn from(value: &Board) -> Self {
+        Self {
+            tiles: value
+                .iter()
+                .map(|tile| tile.map(Into::into))
+                .collect::<Vec<_>>(),
+            width: value.width(),
+            height: value.height(),
+        }
+    }
+}
+
+impl From<Tile> for TileRef {
+    fn from(value: Tile) -> Self {
+        match value {
+            Tile::Digit(digit) => TileRef::Digit(digit.into()),
+            Tile::Operator(operator) => TileRef::Operator(operator.into()),
+            Tile::Equals => TileRef::Equals,
+        }
+    }
+}
+
+impl From<Digit> for DigitRef {
+    fn from(value: Digit) -> Self {
+        Self {
+            value: value.value,
+            has_left_parenthesis: value.has_left_parenthesis,
+            has_right_parenthesis: value.has_right_parenthesis,
+        }
+    }
+}
+
+impl From<Operator> for OperatorRef {
+    fn from(value: Operator) -> Self {
+        match value {
+            Operator::Add => OperatorRef::Add,
+            Operator::Subtract => OperatorRef::Subtract,
+            Operator::Multiply => OperatorRef::Multiply,
+            Operator::Divide => OperatorRef::Divide,
+        }
+    }
+}
+
+impl From<Position2d> for Position2dRef {
+    fn from(value: Position2d) -> Self {
+        Self {
+            x: value.x,
+            y: value.y,
+        }
+    }
+}
+
+impl From<Position2dRef> for Position2d {
+    fn from(value: Position2dRef) -> Self {
+        Self {
+            x: value.x,
+            y: value.y,
+        }
+    }
+}
diff --git a/board-server/src/room.rs b/board-server/src/room.rs
index a97f952..81de110 100644
--- a/board-server/src/room.rs
+++ b/board-server/src/room.rs
@@ -71,6 +71,7 @@ impl Room {
                 .iter()
                 .map(|p| (p.name.clone(), p.score, p.ws.is_some()))
                 .collect(),
+            board: (&self.board).into(),
             active_player: self.active_player,
             has_started: self.has_started,
         })?;
@@ -103,7 +104,7 @@ impl Room {
             ClientMessage::TileUse(pos, tile_idx) => {
                 if let Some(p) = self.connections.get(&addr) {
                     if *p == self.active_player {
-                        self.on_tile_use(pos, tile_idx);
+                        self.on_tile_use(pos.into(), tile_idx);
                     }
                 }
             }
@@ -176,7 +177,7 @@ impl Room {
     fn reset_player_moves(&mut self) {
         let diff = self.board.difference(&self.validated_board);
         for pos in diff {
-            self.broadcast(ServerMessage::TileRemoved(pos));
+            self.broadcast(ServerMessage::TileRemoved(pos.into()));
         }
         self.board = self.validated_board.clone();
     }
diff --git a/board-shared/src/board.rs b/board-shared/src/board.rs
index ea46527..a71d0d5 100644
--- a/board-shared/src/board.rs
+++ b/board-shared/src/board.rs
@@ -134,6 +134,20 @@ impl Board {
         Self::is_aligned(positions, Alignment::Horizontal)
             || Self::is_aligned(positions, Alignment::Vertical)
     }
+
+    /// Gets a linear iterator over the tiles, row by row.
+    ///
+    /// # Example:
+    /// ```
+    /// use board_shared::board::Board;
+    ///
+    /// let board = Board::default();
+    /// let placed_tiles = board.iter().filter(Option::is_some).count();
+    /// assert_eq!(placed_tiles, 0);
+    /// ```
+    pub fn iter(&self) -> impl Iterator<Item = Option<Tile>> + '_ {
+        self.tiles.iter().copied()
+    }
 }
 
 impl Grid2d for Board {