Rules for Churchill Solitaire?
Use 2 standard decks of 52 cards and deal 10 piles with the following rules:

Dealing the cards


When dealing each row, the first and last card is always face up, while the rest is face down.
In each row, after you have dealt the card to the 5th pile, the next card is dealt face up to the "devil's six" pile.  The "devil's six" pile is placed on the upper left hand of the tableau.  You always deal to the "devil's six" pile after dealing to the 5th pile, regardless of which pile you began dealing in that row.  After dealing to the "devil's six" pile, you continue dealing to the 6th pile as normal.
For the first row, start with the first pile and deal to the 10th pile.
On the second row, start on the 2nd pile and deal to the 9th pile.
On the third row, start on the 3rd pile and deal to the 8th.  
On the forth row, start on the 4th pile and deal to the 7th.
On the fifth row, deal face up to the 5th pile directly and deal next card face up to the "devil's six" pile.  Then deal a card face up to the 6th pile, and deal the next card face up to the "devil's six" pile.  
At this point the devil's six pile should have 6 cards in total.
The rest of the cards remain face down and form the stock pile.


Gameplay


Same as other solitaire rules, you build up in sequence with alternating colors in descending order (K->Q->J->10->...).  
The entire ordered sequence in the pile can be moved (e.g. If the pile is 2->5->9->8->7, you can move 9->8->7 to a different pile with a top card of 10 as long as they are alternating colors).  Also note any number of cards in the sequence can be moved, it doesn't have to be the entire sequence (e.g. you can move 7, 8->7, or 9->8->7).
If after moving cards to other piles results in the top card being a face down card, turn the top card face up.
If a pile is empty, only K or a sequence starting with K can be placed to the empty pile. 
Any Ace is immediately moved to the "Victory Rows" (foundations).
The cards in the devil's six pile can only be moved to the Victory Rows directly, the cards cannot be used to build any sequences.
Only the top card of the pile is available for moving to the Victory Rows, including the "devil's six" pile.  You cannot move a card underneath the top card in the "devil's six" pile to the Victory Rows.
Moving cards to the Victory Rows is optional.  You may, for strategic purposes, choose to leave cards in play and delay moving them to the Victory Rows.
You move cards to the "Victory Rows" in ascending order (A->2->3->...).
When you run out of moves, you can deal from the stock pile, dealing one card to each pile that does not start with K as the first card of the pile.
You win the game when all cards are moved to the Victory Rows.