Xsol

xsol is a solitaire/patience for the X Window System similar to Klondike. The goal is to sort all cards into four foundation piles by suit, from kings down to aces, where aces are low. Cards can be dragged around individually or in sequences, and can be placed on a card of opposite-colour suit of one rank higher than the selected card. For example, a black 7 can be placed on an red 8 (hearts or diamonds). Note, however, that there is no visual indication of dragging, and the cards are only moved once the mouse button is released.

Cards are initially dealt into seven columns, with an increasing number of cards in each column, and only the top card initially turned face-up. In this particular variant, any face-down cards are hidden directly under the face-up cards and cannot be seen until cards above are moved off them. Once this happens, they can then be used in play. Additionally, the remainder of the deck is available for use and can be cycled through one card at a time, then moved into play if they match the card placement rules. This version only permits the deck to be flipped through once. After the deck is exhausted, and no more moves are available, the game is over.