Canfield comes from an actual casino: in the 1890s, gamblers at Richard Canfield's Saratoga club bought a deck for $50 and won $5 back for every card they managed to play to the foundations. The house did famously well, which tells you what kind of game this is.
A dealt card fixes the starting rank for all four foundations, which build upwards in suit and wrap past the King. A thirteen-card reserve feeds the four tableau columns automatically as they empty, and the stock deals three at a time with unlimited redeals. Beating it feels like getting one over the house — because you are.
Canfield deals one card to a foundation at the start, and its rank becomes the base for all four. Each foundation climbs from that rank and wraps past the King — a base of 9 runs 9, 10, J, Q, K, A, 2 and on to 8.
A face-down stack of thirteen cards dealt at the start. Its top card is always playable, and it automatically refills any tableau column that empties. Emptying the reserve is most of the battle.
It was designed as a casino game where the house profited when players fell short. Win rates are genuinely low, so consider anything above the occasional win a strong result.