Moosehide deals the Yukon staircase and then changes the building rule to something no other common patience uses: a card may be built on any suit EXCEPT its own. Three suits accept your card instead of the usual two, so the board feels generous — until the one suit you most want to stack on refuses you. That inversion is the whole game. It shares a deal, a move rule and a goal with Yukon, and plays nothing like it.
Ask what a move uncovers, never whether a card is free. In this family every face-up card is already free — it travels with whatever sits on it. So the only question worth asking is what the move exposes. A move that reveals a face-down card is almost always better than a move that improves a sequence.
Break up same-suit runs early. This is the rule that catches Yukon players. A long descending run of one suit is dead weight in Moosehide: you cannot restack it anywhere, because every card in it refuses its own suit. Spot those columns at the deal and take them apart while you still have places to put the pieces.
Spend the extra suit freely, then stop. Having three legal hosts instead of two makes the early game fast and tempts you into moves that gain nothing. Move a card only when it uncovers something, opens a column, or sets up a specific card you can name.
Hold a king back for the space you will need. Only a king fills an empty column, so a board with all four kings buried cannot use a space even if it opens one. Keep track of where your kings are, and free the most reachable one before you clear a column.
Yukon takes Klondike's board, throws away the stock, and lets any face-up card move with everything on top of it. That one rule creates a family where nothing is ever truly blocked, only expensive. Its members then vary the build rule and the empty-column rule. Russian Solitaire tightens the build to same-suit and becomes brutal. Ukrainian loosens the empty-column rule and becomes forgiving. Moosehide changes the build to "any suit but its own", which sits between Yukon's alternating colours and Russian's same-suit — looser move by move, but with a trap the other members do not have.
Moosehide runs in your browser — free, no download, no sign-up. Install it as an app on your phone or computer and it works offline. You get unlimited undo, a hint button that names a legal move, statistics that track your wins and times, and seeded deals: every game has a seed you can replay, so a board you enjoyed (or lost) can be played again exactly.