Four Aces start already on the foundations, and you get two shuffled redeals when the fans jam up. Faster and friendlier than its parent, La Belle Lucie.

Trefoil Solitaire is La Belle Lucie's tidy younger sibling, named for the three-lobed clover leaf that its little three-card fans resemble. It plays exactly like the older fan game with one head start: the four Aces are already sitting on the foundations when the deal begins, so the tableau is just sixteen fans of three — forty-eight cards — instead of seventeen fans and a stray single.
The redeal that defines the whole fan family is here too. When you run out of moves, you gather every card still in the fans, reshuffle them, and deal them back into fresh fans of three. Trefoil grants this shuffled redeal twice, which is often the difference between a blocked board and a clean sweep to the Kings.
With the Aces pre-planted, Trefoil gets off to a faster, friendlier start than La Belle Lucie, and its win rate sits a touch higher. Still, the same skill decides it: a single buried card can freeze a fan, so freeing low cards early and reading which suits are stuck matters far more than luck.
If you like Trefoil, try its parent La Belle Lucie Solitaire for the fuller seventeen-fan version, or Super Flower Garden Solitaire, a looser cousin that lets you build down regardless of suit.
If you run into anything odd or have an idea that would make the game better, please contact me.
Enjoy playing!
4 foundation piles: The four Aces are dealt here at the start, one per pile. Build up in suit from the Ace (2, 3 … up to King).
16 fans (tableau): Sixteen fans of three cards — forty-eight cards in all — dealt face-up. Build down in suit; the only card that fits on the 8 of spades is the 7 of spades. Only the top card of each fan is playable. Empty fans stay empty and are never refilled.
Stock: There is no ordinary stock. The permanently empty stock slot is the tap target for a redeal.
There are four foundation piles, one for each suit, each starting with its Ace already in place.
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 hearts is a 6 of hearts. There can be no more than 13 cards in a pile.
The top card of each foundation can be moved back into play if another pile will accept it.
The tableau is dealt as fans of three cards, splayed so every card shows. Only the exposed top card of a fan may be moved.
A card can be added to a fan only if it's one rank lower and the same suit as that fan's current top card, so the only card that fits on a 9 of clubs is an 8 of clubs.
Cards on the tableau that are not covered by another card are free to be played onto the foundation or onto another fan. Only one card may be moved at a time; sequences are not permitted. When a fan is emptied, its space stays empty for the rest of the deal.
When no more moves are possible, tap the stock slot to redeal. Every card still in the fans is gathered up, reshuffled, and dealt back out into fresh fans of three. Trefoil allows this shuffled redeal twice, so save each one for the moment you have squeezed out every last move — those two reshuffles are your whole comeback.