diff --git a/chessBoard/chessBoard.ino b/chessBoard/chessBoard.ino
new file mode 100644
index 0000000..3a98bb5
--- /dev/null
+++ b/chessBoard/chessBoard.ino
@@ -0,0 +1,130 @@
+void setup() {
+  // put your setup code here, to run once:
+  pinMode(2,OUTPUT);
+  pinMode(3,OUTPUT);
+  pinMode(4,OUTPUT);
+  pinMode(5,OUTPUT);
+  pinMode(6,OUTPUT);
+  pinMode(7,OUTPUT);
+  pinMode(8,OUTPUT);
+  pinMode(9,OUTPUT);
+  pinMode(10,OUTPUT);
+  Serial.begin(9600);
+}
+int ledState = 1;
+
+void loop() {
+  String locs;
+  int x_loc;
+  int y_loc;
+  int chess_switch;
+  int player = 1;
+  int board[9] = {0};
+  int gamestate = 0;
+  unsigned long currentMillis;
+  unsigned long previousMillis = 0;
+  while(true){
+    while(Serial.available() <= 0){
+        currentMillis = millis();
+        if (currentMillis - previousMillis > 500) {
+            previousMillis = currentMillis;
+            if (ledState == LOW) {
+                ledState = HIGH;
+            } 
+            else {
+                ledState = LOW;
+            }
+            for(int i = 0; i < 9; i ++){
+                if(board[i] == 2){
+                    digitalWrite(i + 2, ledState);
+                }
+            }
+        }
+    };
+    if (Serial.available() > 0){
+        locs = Serial.readStringUntil('\n');
+        Serial.println(locs);
+        x_loc = (int) locs[0] - 48;
+        y_loc = (int) locs[2] - 48;
+    }
+    chess_switch = (x_loc - 1) * 3 + y_loc;
+    Serial.println(chess_switch);
+    if(chess_switch < 0 || chess_switch > 9 || board[chess_switch - 1] != 0){
+        Serial.println("not inserted!");
+        continue;
+    }
+    else{
+        insert(player, chess_switch);
+        if(player % 2 == 1){
+            board[chess_switch - 1] = 1;
+        }
+        else{
+            board[chess_switch - 1] = 2;
+        }
+        player = (player + 1) % 2;
+    }
+    gamestate = checkwinner(board);
+    if(gamestate == 1){
+        Serial.println("Player 1 win!");
+        reset(board, &player);
+    }
+    else if(gamestate == 2){
+        Serial.println("Player 2 win!");
+        reset(board, &player);
+    }
+    else if (gamestate == 3){
+        Serial.println("Stuck!");
+        reset(board, &player);
+    }
+  }
+}
+
+void insert(int player, int chess_switch){
+    if(player % 2 == 1){
+        digitalWrite(chess_switch + 1,HIGH);
+    }
+    else{
+        digitalWrite(chess_switch + 1,HIGH);
+    }
+    Serial.println("inserted!");
+}
+
+int checkwinner(int board[]){
+    int product;
+    int empty = 0;
+    for(int i = 0; i < 3; i ++){
+        product = board[i * 3] * board[i * 3 + 1] * board[i * 3 + 2];
+        if (product == 1 || product == 8){
+            return pow(product, 1/3);
+        }
+        if(empty == 0 && product == 0){
+            empty = 1;
+        }
+    }
+    for(int i = 0; i < 3; i ++){
+        product = board[i] * board[i + 3] * board[i + 6];
+        if (product == 1 || product == 8){
+            return pow(product, 1/3);
+        }
+    }
+    if (board[0] * board[4] * board[9] == 1 || board[2] * board[4] * board[6] == 1)
+    {
+        return 1;
+    }
+    if (board[0] * board[4] * board[9] == 8 || board[2] * board[4] * board[6] == 8)
+    {
+        return 2;
+    }
+    if(empty == 0){
+        return 3;
+    }
+    return 0;
+};
+
+void reset(int board[], int *player){
+    for(int i = 0; i < 9; i ++){
+        board[i] = 0;
+        digitalWrite(i + 2, LOW);
+    }
+    *player = 1;
+}