Nivernaise Solitaire

Nivernaise also known as Tournament is a solitaire card game which uses two decks of playing cards shuffled together.

Move all the cards to the Foundations.
The left foundations are built up by suit from Ace to King.
The right foundations are built down by suit from King to Ace.
Cards from the tableau can play onto the foundations, but not onto other tableau piles.
The cards on the reserve are available to be built on the foundations, and any space it leaves behind are optionally filled from any from the tableau.
Double-click on a card to move it into its place.