2 Decks. Very Hard (<1%). Skill/Luck balanced.
To move all the cards to the .
|•||8 piles (across top) - build from Ace to King.|
|•||7 piles (below ) - build . Move groups of cards if they are in sequence . Fill spaces with any card or legal group of cards. At the start of the game 7 cards are dealt to each pile, alternating face up and face down.|
|•|| (face down) - turn over cards one at a time to the by clicking. No .|
|•|| (below ) - Top card always available for play on the or .|
Alternations is a variation of Interchange. It dates back to at least 1905.