Why Archway stands out
Archway is one of the few patience games where the entire layout is visible from the first move. Both decks are fully dealt: 48 cards in four tableau columns, one card per suit per deck on the foundations, and all remaining cards sorted by rank into the arch reserve. Nothing is hidden.
The challenge is sequencing. Eight foundations run simultaneously — four climbing from Ace to King and four descending from King to Ace — and any card in the arch reserve can be used at any time. The bottleneck is the four tableau columns: only single-card moves are allowed between them, so unlocking the right arch card at the right moment is everything.