Diplomat Solitaire (3 Pass) - Version 1.0 Diplomat Solitaire is a free online solitaire card game similar to Fortress Solitaire or Beleaguered Castle. Diplomat Solitaire is played with 2 decks, and the player can move the top card in one of the eight piles to the top position in any other pile building the piles down, or to the foundations building them up by suit. The player can also deal cards from the stock pile into the waste pile, and move the top card in the waste pile into play.