This is the workshop's first card piece. The promise, applied to solitaire:
every deal you are given is winnable — true by construction. A headless solver searches each
dealt board for a winning line, and the dealer ships only deals the solver has already beaten
(rejection sampling), caching the line to power Hint and Watch it solve itself. The
variant is a compact FreeCell (a 28-card deck, A–7); the green chip up top runs the same
runSelfTest core as node tools/patience/patience.test.cjs — replaying every
shipped deal move-by-move to a win. (You can still strand yourself by bad play — that's what Undo
and Hint are for. The guarantee is about the deal, not the play.)
Every foundation built, A through 7. The deal was winnable — and you found the line.