2 decks. Easy. No redeal.
Aces are moved to the foundations as they become available.
The top cards of tableau piles and the waste pile are available to play. You may build tableau piles down in sequence and alternating color. One card or group of cards in the proper sequence can be moved from pile to pile. When any tableaus are empty you can fill the space with any card or legal sequence of cards.
When you have made all the moves initially available, begin turning over cards from stock.
There is no redeal.
Emperor Solitaire is one of the games included into the BVS Solitaire Collection.