让计算机来猜测用户“暗记”的某张扑克牌：计算机从一副扑克牌（54张）中任意抽出27张，摆放在不同的三行上（每行9张），用户“暗记”某张纸牌，而后告诉计算机所“暗记”的那张纸牌处于哪一行中；之后计算机再两次将纸牌重新摆放，并让用户再回答两次相同的提问（那张纸牌在重新摆放后又处在哪一行上）；此时计算机会将用户所“暗记”的那张纸牌给挑出来。-Allow a computer to guess the user "counterfeitproof" the cards: computer at random from a deck of cards (54) 27, placed on three lines (each line 9), the user "secret mark" aplaying cards, and then tell the computer to "secret mark" that solitaire in which line　after the computer again twice Solitaire repositioned, and then answer the same question twice (that solitaire then repositionedin which line)　computer sends the user that the "secret mark" of cards to pick out.