FreeCell type. 2 decks. No redeal.
Move all cards to the foundations.
Like FreeCell, but with 2 decks, and empty rows are not filled.
All cards are dealt to 9 piles at the start of the game, each King starting a new pile. To compensate for this there are 7 free cells which can hold any - and just one - card.
Piles build down by alternate color, and an empty space cannot be filled.
The number of cards you can move as a sequence is restricted by the number of free cells - the number of free cells required is the same as if you would make an equivalent sequence of moves with single cards.
This is a FreeCell type game of German origin. It is related to Der Katzenschwanz.