Canfield is part of BSD Games, a Patience/Solitaire game, also a gambling game.
Canfield: Instructions, Betting, Card counting
At first few plays, I could barely get a few into the foundations, I thought even I wasn’t good at Patience game, but I couldn’t be that bad, could I?
Finally, I looked up on Wikipedia and the first line it reads:
[…] with a very low probability of winning. According to legend, it is originally a casino game, […]. In England, it is known as Demon. [some emphases mine]