[pine cone]

有人说北美很多比赛禁止使用奇偶信号，请问哪位了解情况？帮忙解答一下，北美的比赛是否禁止奇偶信号？禁止的是什么样的奇偶信号？

[2200]

据我所知，不禁，但一流职业牌手几乎不用，而且会告诫付费客户不要用。
这是因为，这种信号很容易陷入“不义”，妳有那张信号牌还好说，没有，慢吞吞地思考半天出一张，那同伴立刻知道妳有什么了，这跟作弊就是五十与百步，而且是很低级的作弊。

[pine cone]

谢谢你的答复~那普通的正信号也有迟疑问题，为何单说奇偶信号的问题呢

[fromageGB]

If you can post the question in English you will get a proper reply. The question as translated by google is "parity signals", which are cards played when following suit that indicate "odd or even". This is very common, referring typically to length in the suit being played. If you are asking about what I know as "prism signals and discards" that show parity in all suits together, then I believe it is allowed. There is nothing encrypted about it, as you can explain when asked, and declarer himself can use the information to work out your defender shapes.

[lycier]

 fromageGB, on 2018-October-02, 04:13, said:

If you can post the question in English you will get a proper reply. The question as translated by google is "parity signals", which are cards played when following suit that indicate "odd or even". This is very common, referring typically to length in the suit being played. If you are asking about what I know as "prism signals and discards" that show parity in all suits together, then I believe it is allowed. There is nothing encrypted about it, as you can explain when asked, and declarer himself can use the information to work out your defender shapes.

Thank you very much for your reply, a pity that Google had left China in 2010.

[2200]

Bobby Wolff，由于他深信过去使用奇偶（罗马）信号的意大利队在使用该信号时作弊（原因见2楼），因此他主政期间，致力于禁止奇偶信号，所以北美短期禁止过奇偶一段时间，或许这是听说的由来。
但......后来又开禁了。
普通信号含义是单一的，即使出现节奏上的停顿，也不至于使同伴获得非法信息，且不存在守方较庄家的信息优势。