diff --git a/main.cpp b/main.cpp
index 491728e..2b77c54 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,7 +3,102 @@
   */
 
 #include <iostream>
+#include <vector>
+
+#define BOARDSIZE 9
+
+using namespace std;
+
+class Board;
+
+class Player {
+public:
+  // returns 0-8
+  virtual int getMove(Board b) = 0;
+  virtual ~Player() {};
+};
+
+class Board {
+private:
+  vector<int> board;
+  Player *player1, *player2;
+public:
+  Board() {
+    for (int i=0; i<BOARDSIZE; i++)
+      board.push_back(0);
+  }
+
+  Board(Board& b) {
+    for (int i=0; i<BOARDSIZE; i++)
+      board.push_back(b.board[i]);
+  }
+
+  vector<int> getBoard() {
+    return board;
+  }
+
+  bool makeMove(int move) {
+    if (!isValidMove(move)) return false;
+  }
+
+  bool isValidMove(int move) {
+    return move >= 0 && move < 9 && board[move] == 0; 
+  }
+
+  void print() {
+    for (int i=0; i<3; i++) {
+      for (int j=0; j<3; j++) {
+        printf(" %d |", board[i*3+j]);
+      }
+      printf("\e[1D\e[0K\n---+---+---\n");
+    }
+    printf("\e[1A\e[0K");
+  }
+};
+
+class User : public Player {
+  int getMove(Board b) {
+    while (true) {
+      int move;
+      cout << "Tile: ";
+      cin >> move;
+      if (b.isValidMove(move)) return move;
+      cout << endl << "Invalid move\e[2A";
+    }
+  }
+};
+
+class CPU: public Player {
+  int getMove(Board b) {
+
+  }
+};
 
 int main() {
-  printf("\e[2J\n");
+  printf("\e[2J\e[2;0HNumber of players: ");
+  int selection;
+  cin >> selection;
+  if (selection > 2 || selection < 0) {
+    cout << "Invalid choice" << endl;
+    return -1;
+  }
+
+  Player *player1, *player2;
+
+  if (selection == 0) {
+    player1 = new CPU();
+    player2 = new CPU();
+  } else if (selection == 1) {
+    player1 = new User();
+    player2 = new CPU();
+  } else {
+    player1 = new User();
+    player2 = new User();
+  }
+
+  Board main;
+  main.print();
+
+  delete player1;
+  delete player2;
 }
\ No newline at end of file