Russian Solitaire is less known but very involving solitaire similar to Yukon. When playing 2 or 4 suits use undo to win! Features: - high resolutions for tablets and larger phones, - clean cards, - undo, - saving state, - 1 suit (easy), 2 suit (hard, use undo!), 4 suit (very hard, a real challenge) Rules - You can move any group of not reversed cards, - You can drop cards when card below has the same suit and is one point higher than the starting card, - You can put only Kings on empty places