User blog comment:B214/Question and Answers 3/@comment-25015596-20140729064722/@comment-24549585-20140730024334

You can only play with the 15 pieces you were given, you cannot "borrow" someone elses pieces, you can only trade one of your pieces for another kings piece that is if there willing to trade and if you trade they dont have to trade you back so you could lose a powerful piece and get nothing bu a soso player.