[basic] chessBoard author solution

lib/chessBoard.ts

@@ -21,4 +21,21 @@ function chessBoard(size: number) {
   console.log(output)
 }
 
-chessBoard(8);
+function chessBoardAthorSolution(size: number) {
+  let board = "";
+
+  for (let y = 0; y < size; y++) {
+    for (let x = 0; x < size; x++) {
+      if ((x + y) % 2 == 0)
+        board += " ";
+      else
+        board += "#";
+    }
+    board += "\n";
+  }
+
+  console.log(board)
+
+}
+
+chessBoardAthorSolution(10);