Rules for Trigon Solitaire

Description:

A variation of Klondike where we build in suit instead of with alternating colors.

Cards:

One standard deck. Since colors don't matter, politaire substitutes a four-color deck of cards..

Goal:

Move all cards to the foundation.

Foundation:

Four foundation piles.

Any ace may be moved to any empty pile in the foundation.

A card may be added onto a foundation pile if it is one higher than the old top card of the pile and of the same suit.Thus, the only card that could be played on a 4♠ would be a 5♠.

Once on the foundation, cards may not be moved back off..

Tableau:

Seven tableau piles with one card in the first pile, two cards in the second, three in the third, and so on. The top card in each pile is dealt face up, all others are face down.

A card may be added onto a tableau pile if it is one lower than the old top card of the pile and of the same suit.Thus, the only card that could be played on a 5♠ would be a 4♠.

Cards on the tableau that are not under another card are available for play onto the foundation or any other tableau pile.

Empty spaces in the tableau may be filled by kings only.

Groups of cards in sequence down may be moved from one tableau column to another if all cards are of the same suit.

Stock and Waste:

The remaining cards form the stock and there is one waste pile.

Each time you click on the stock, one card will be dealt from the stock to the waste. Unlimited passes through the stock are permitted.

The top card of the waste is available for play to the tableau or the foundation.

Strategy:

There isn't much strategy to this game. Just play every card you can. The only decision points occur when you have a choice of different Kings to move into an empty space.

Common Variations:

Dealing cards one-by-one with unlimited redeals basically means that all stock cards are always accessible, so you could just set it up that way by selecting no stock on the "Structure" tab and "all cards playable" on the "Waste" tab. Of course, the game is so easy that if you do that it almost plays itself

Difficulty:

Jan Wolter ran a solver on one million random Trigon deals and found 16% were solvable.

Similar Games:

Double Trigon (Play) (Rules)

A two-deck version of Trigon or maybe a version of Double Klondike with building in suit. I suppose it depends on how you look at it.

Quadruple Trigon (Play) (Rules)

A four-deck version of Trigon. Needs a large screen.

Trigon Left (Play) (Rules)

A blend of Trigon and Moving Left.

Klondike (Play) (Rules)

The world's most famous solitaire game features a triangular tableau where you build down in alternating colors.

Storehouse (Play) (Rules)

A old Canfield variant first described in 1939. A pleasant game, but there is scarcely any strategy required.

Ali Baba (Play) (Rules)

A one-deck variation of Forty and Eight where you can move sequences of cards together instead of just one at a time. With 40 cards in the tableau, you only have 12 cards in your deck which makes for a lot of unsolvable games. But with a bit of luck you can open an empty space in your tableau and then things are likely to go smoothly.

References:

Pretty Good Solitaire
Jan Wolter's Experiments