“I can remember de Staercke sitting across from me on a plane somewhere over Europe playing the curious game, dizzying columns of miniature cards arrayed on the table between us. I asked him what he was playing and he proceeded to tell me the origin of the game he called Churchill Solitaire after the man we both very much admired, and the diabolical rules that make it the hardest game of solitaire — and probably the most challenging and strategic game of logic or puzzle — I’ve ever played.”

Source: At 83, I Decided to Develop an App — Medium