Once per game, free a buried card with a single rescue draw. Skill over luck carries this single-deck Fan variant to a 45% win rate.

Midnight Clover Solitaire is Thomas Warfield's twist on his own Fan Solitaire: it adds a once-per-game draw, letting you pull one buried card free when you're stuck. That once-per-game rescue is what keeps it at medium difficulty rather than harder, and it's enough to push the win rate to 45% on a single deck, where skill outweighs luck.
It's part of the same fan family as Box Fan Solitaire.
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Enjoy the game!
4 foundation piles: Build up in suit from Ace to King. Each pile starts with an ace already in place.
16 fan piles: Build down in the same suit. Only one card moves at a time, except for a once-per-game draw: right-click a buried card to bring it to the top of its own pile. Only Kings can fill an empty space. Each pile starts with three cards, all face-up.
There are four foundation piles.
Each foundation pile is handed an ace at the start.
A card can be added to a foundation pile only if it's one rank higher and the same suit as the pile's current top card, so the only card that fits on a 5 of diamonds is the 6 of diamonds.
The top card of each foundation can be moved back into play if another pile will accept it.
Sixteen fan piles of three cards each, all dealt face-up.
A card can be added to a fan pile only if it's one rank lower and the same suit as the pile's current top card, so the only card that fits on an 8 of spades is the 7 of spades.
Cards on the fan that are not covered by another card can be played onto the foundation or any other fan pile.
Once per game, you can right-click a buried card to bring it straight to the top of its own pile — save it for when you're truly stuck, since you only get the one.
Only Kings may fill an empty spot in the fan.
Only one card may be moved at a time; sequences are not permitted.