Osmosis Solitaire is an interesting game whose gameplay is different from many other solitaire games. Osmosis is a type of solitaire game which is played with a deck of 52 playing cards where the object, like many solitaire games, is to put the cards into foundations, although not in numerical order. It is also known as Treasure Trove.
The main objective of this game is to play all cards on to the foundations, one foundation per suit.
The game is played with a shuffled deck. Four reserve rows are made, having four cards each. These reserve rows are made face down, except for the fourth card in each row which is dealt face up.
Four foundation rows will be built up to the right of the reserve cards. Initially, just the first foundation is started with one random card.
To the left of the layout, the remaining cards are placed in a stockpile. A waste pile will be formed above the stockpile as the cards are gone through.
The first card dealt to that first foundation pile is what starts the game. The other 3 foundation piles have no cards.
You can play any other available card of the same suit on the first foundation pile. For example, if the King of Hearts is the card played to the first foundation pile, you can play any other Heart to that pile.
On the next foundation pile, you can start the pile by playing any card of the same rank as the first card played to the first pile. So looking at the example given above you could start the next pile with any other King. After the first card has been played to a pile, you can then play any other card of that suit that is of a rank that has already been played to the pile above.
Looking at the example, you are able to play the King of Clubs to the 2nd foundation pile. With the King of Hearts starting the first pile and the King of Clubs the 2nd, you can now play any Heart to the first pile, and then any Club of the same rank to the 2nd pile. So if you then play the 6 of Hearts to the first pile, you could then play the 6 of Clubs to the 2nd pile if it is available. The process filters down through 4 foundation piles, one for each suit. Eventually, the goal is to get all of the cards into the 4 piles.
When you are left with no more moves, you can turn over the top card of the stock to a waste pile. There are unlimited redeals. When the stock is empty, you just turn over the waste pile and run through it again.
The key point to the winning is to get the face down cards out of the 4 reserve piles.
Since all of the cards in the stock will eventually become available, the only way to lose is to not be able to get a card out of the reserve.