It is poker solitaire which you can enjoy very strategically because 25 cards are all understood in the initial state.
There are 1000 problems in all, and there is also a function to memorize placement with each problem.
You can compete the score on the net, you can compete the score of the same problem, you may want to aim for a high score without thinking.
It is also good to play grueling when you want to kill time with your head.
