大家好，我是一名记忆爱好者，来至中国，希望能了解下 扑克牌的2卡系统

[Honje (Jedidiah Benedict)]

请多多指教

[Josh (Josh Cohen)]

Welcome the site!

[14line]

Hi,

You may refer to this by Lance:

A New 2-Card System (Shadow System)

A note from the author, five years later: The text at the bottom of this post, which is stricken out, has been left in for historic and informative completeness. It is stricken out because it should not be applied, and because it may mislead. The Shadow System’s name has been problematic for a long time. If the method does not include shadows, as I’ve suggested openly for four years now, surely it can not be referred to as the “Shadow” System must be the rationale. Credit is due and that cr…