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。-Let the computer to guess user " markings"　of a playing card, the computer from a playing cards (54) in any out of 27, placed in three rows on a different (one per line 9), user " secret mark"　a Zhang, playing cards, and then tell the computer " markings"　in what goes on in a line of cards　twice after the computer and then re-placed cards, and allow users to answer the same question twice (placed after the re-affiliation card at which line)　time computer users will be " secret mark"　and goes on to pick out cards.