From: yychen@watdragon.uwaterloo.ca (Youyi Chen)
Subject: Re: The Mysteries of Weiqi (part 9)
Organization: University of Waterloo
Date: Sun, 3 Jan 1993 03:31:18 GMT

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!!! Warning !!! Never practice following Kung Fu in a real game.
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Number 6 golden rule is:

                Feng Wei Xu Qi
Feng2 = meet
Wei1 = danger
Xu1  = must
Qi4 = discard, abandon.

My tentative interpretation of this golden rule is

       "When in danger, consider qi".

I use Chinese "qi" instead of English "discard", since "discard" is only
one of many meanings implied by "qi".
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!!! Dangerous !!! While you enjoy the art of Weiqi by playing "Qi", 
often time, your opponent is more than happy to take it and leaves 
you with nothing in return. The result: you win in artistic merit. 
But your opponent win in territory count.
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Remember my first article?  A Russian proverb was
discussed ---- "With less than 15 stones in danger, tenuki".
I commented with "It is always wrong to justify a tenuki by 
the number of stones one leaves behind". To further illustrate the
point, let's first bring up a game by Ishida Yoshio and Takemiya Masaki
in a Meijin league match.

Black to play:
   A B C D E F G H J K L M N O P Q R S T
19 . . . . . . . . . . . . . . . . . . . 19
18 . . . . . . . . . . . . . . . . . . . 18
17 . . . . # . . . . . . . O . # . . . . 17
16 . . # . . . . . . . . . . . . . O . . 16
15 . . . . . . . . . . . . . . ? O . . . 15        Board 1
14 . . . . . . . . . . . . . . . . . . . 14
13 . . . . . . . . . . . . . . . . . . . 13    Black: Ishida Yoshio  [9p]
12 . . . . . . . . . . . . . . . . . . . 12           (Shi2 Tian2 Fang1 Fu1)
11 . . . . . . . . . . . . . . . . . . . 11    White: Takemiya Masaki [9p]
10 . . # . . . . . . . . . . . . . # . . 10           (Wu3 Gong Zheng4 Shu4)
 9 . . . . . . . . . . . . . . . . . . .  9
 8 . . . . . . . . . . . . . . . . . . .  8
 7 . . . . . . . . . . . . . . . . . . .  7
 6 . . . . . . . . . . . . . . . . . . .  6
 5 . O . . . . . . . . . . . . . . . . .  5
 4 . . . . . . . . . . . . . . . # . . .  4
 3 . . O . . . . . . O . . . . . . . . .  3
 2 . . . . . . . . . . . . . . . . . . .  2
 1 . . . . . . . . . . . . . . . . . . .  1
   A B C D E F G H J K L M N O P Q R S T
Source: "I like to play this way" by Fujisawa Hideyuki.

Instead of P15 to escape, Ishida Yoshio (motivated by that Russian proverb?), 
choose M3 followed by White O16 and Black R4. 
"P15 is the only move for Black in this case", criticized Fujisawa Hideyuki.
Perhaps, in Fujisawa Hideyuki's mind, P17 is what I called "Qi Jin" 
in my first article. Ishida Yoshio shouldn't have tenukied 
although it is only a single stone in danger.

Secondly, there is a difference between tenuki and "Qi".
Looking up Chinese-English dictionaries, "Qi" means discarding. 
Therefore, "Qi Zi" means discarding stones. However, as a Go term
in Chinese, "Qi" implies not only going away, discarding, 
or tenuki. "Qi Zi" should remind a Go player about "Qi Zi Zhan Shu"
(discarding-stone-tactics). To demonstrate such tactics, 
let's bring up Board 2.

White to play:

   A B C D E F G H J K L M N O P Q R S T
19 . . . . . . . . . . . . . . . . . # . 19
18 . . . . . . . . . . . . . . . . # . # 18
17 . . . O . . . . . . # . . . O O O # . 17
16 . . . + . . . . . + . . . . . # # O . 16
15 . . O . . . . . . . . . . . . . O . . 15        Board 2
14 . . . . . . . . . . . . . . . # . . . 14
13 . . . . . . . . . . . . . . . . . . . 13
12 . . . . . . . . . . . . . . . O . . . 12
11 . . . . . . . . . . . . . . . . . . . 11      Black: Shang Chuan Ban Hu [7p]
10 . . . + . . . . . + . . . . . + . . . 10      White: Yuan Wang [5p]
 9 . . . . . . . . . . . . . . . . . . .  9
 8 . . . . . . . . . . . . . . . . O . .  8
 7 . . . . . . . . . . . . . . . . . . .  7
 6 . . . . . . . . . . . . . . . . . . .  6
 5 . . . . . . . . . . . . . . . . # . .  5
 4 . . # + # . . . . + . . . . . + . . .  4
 3 . . . . . . . . . # . . . . . O . . .  3
 2 . . . . . . . . . . . . . . . . . . .  2
 1 . . . . . . . . . . . . . . . . . . .  1
   A B C D E F G H J K L M N O P Q R S T

Whites are cut into two pieces in North-East corner. 
This is surely not a place for tenuki. Wang decide to save 2 stones around
R15 and "Qi" 3 stones around P17.

   A B C D E F G H J K L M N O P Q R S T
19 . . . . . . . . . . . . . . . . . # . 19
18 . . . . . . . . . . . . . . . . # . # 18
17 . . . O . . . . . . # . # # O O O # . 17
16 . . . + . . . . . + . . O # # # # O . 16
15 . . O . . . . . . . . . . O O O O . . 15        Board 3
14 . . . . . . . . . . . . . . . # . . . 14
13 . . . . . . . . . . . . . . . . . . . 13
12 . . . . . . . . . . . . . . . O . . . 12
11 . . . . . . . . . . . . . . . . . . . 11      Black: Shang Chuan Ban Hu [7p]
10 . . . + . . . . . + . . . . . + . . . 10      White: Yuan Wang [5p]
 9 . . . . . . . . . . . . . . . . . . .  9
 8 . . . . . . . . . . . . . . . . O . .  8
 7 . . . . . . . . . . . . . . . . . . .  7
 6 . . . . . . . . . . . . . . . . . . .  6
 5 . . . . . . . . . . . . . . . . # . .  5
 4 . . # + # . . . . + . . . . . + O . .  4
 3 . . . . . . . . . # . . . . . O . . .  3
 2 . . . . . . . . . . . . . . . . . . .  2
 1 . . . . . . . . . . . . . . . . . . .  1
   A B C D E F G H J K L M N O P Q R S T

After discarding P17 group with the sequence Q15-P16-O15-O16-N16-O17-P15-N17
and taking R4, White appears to be in good shape.

It seems that Chinese players are better equipped with the
secret weapon -- "Qi". This is perhaps due to the influence
of Modern Chinese legend Ti Sheng Guo who has a famous saying
---- "What move scares you? it's not the move capturing your stone, 
it is the move letting you to capture." Such kind of logic seems to 
have gone crazy among many Chinese players. Some Chinese professionals 
wrote "Qi is a special Go term meaning sending (note, not abandoning) 
stones to opponent". I don't know what's the Japanese correspondence 
of "Qi" and how Japanese players understand it. What I do know is that 
Otake Hideo treat "Qi" in this golden rule as "abandon" (throw away).
I think which is only one of many meanings implied by "Qi".

Finally, if the last example is not exciting enough, let me show you
a big one. It is also a match between Chinese and Japanese players
and Japanese player falling into Chinese player's Qi.

Black to play:
   A B C D E F G H J K L M N O P Q R S T
19 . . . O . O . . . . . . . . . . . . . 19
18 . . O . O # O # . . . . . . . . . . . 18
17 . . O O # . O # . . . . . . . . . . . 17
16 . . . + # . O # . # . . . . . + # . . 16
15 . . # . . # # O . . . . . . . . . . . 15        Board 4
14 . . . . . . . O . . . . . . . . . . . 14
13 . . . . . O . . . . . . . . . . . . . 13
12 . . . . # . . . . . . . . . . . . . . 12
11 . . . O . O . . . . . . . . . . . . . 11        Black: Xiao-Guan Liu [7P]
10 . . . + . . . . . + . . . . . + . . . 10        White: Tai Pin Xiu Shan [9P]
 9 . . . # . . . . . . . . . . . . . . .  9
 8 . . . . . . . . . . . . . . . . . . .  8
 7 . . . . . . . . . . . . . . . . . . .  7      
 6 . . . . . . . . . . . . . . . . . . .  6
 5 . . . . . . . . . . . . . . . . . . .  5
 4 . . . + . . . . . + . . . . . + O . .  4
 3 . . . # . . . . . . . . . . . . . . .  3
 2 . . . . . . . . . . . . . . . . . . .  2
 1 . . . . . . . . . . . . . . . . . . .  1
   A B C D E F G H J K L M N O P Q R S T
(This game was played in 1984, Liu is believed to be a 9P now.)

E12 is to expect White E11 letting Black G13 to escape. However,
White F13 takes B by surprise and endanger Black's whole team in 
the North-West side. Don't worry. In Board 5, Liu is going to 
demonstrate that special kind of "Feng Wei Xu Qi".

   A B C D E F G H J K L M N O P Q R S T
19 . . . O . O . . . . . . . . . . . . . 19
18 . . O . O # O # . . . . . . . . . . . 18
17 . . O O # . O # . . . . . . . . . . . 17
16 . . . + # . O # . # . . . . . + # . . 16
15 . . # . O # # O O O # # . . . . . . . 15        Board 5
14 . O . # . O O O # # O . . . . . . . . 14
13 . . O # O O # # O # . . . . . . . . . 13
12 . O . O # # O # . . . . . . . . . . . 12
11 . O O O # O . . . . . . . . . . . . . 11        Black: Xiao-Guan Liu [7P]
10 . # O # # . . . . + . . . . . + . . . 10        White: Tai Pin Xiu Shan [9P]
 9 . # # # . . . . . . . . . . . . . . .  9
 8 . . . . . . . . . . . . . . . . . . .  8
 7 . . . . . . . . . . . . . . . . . . .  7
 6 . . . . . . . . . . . . . . . . . . .  6
 5 . . . . . . . . . . . . . . . . . . .  5
 4 . . . + . . . . . + . . . . . + O . .  4
 3 . . . # . . . . . . . . . . . . . . .  3
 2 . . . . . . . . . . . . . . . . . . .  2
 1 . . . . . . . . . . . . . . . . . . .  1
   A B C D E F G H J K L M N O P Q R S T

Perhaps, I need to call up mgt to show how and why Board 4 becomes Board 5.
Since we are talking about a secret weapon, I decide to leave you 
with a secret codes instead :)
G13-G14-F12-G12-E11-E13-D13-D12-E10-C13-D14-C10-C9-B14-B10-B11-D10-
-C11-B9-B12-H13-J13-H12-F14-J14-J15-K14-K15-L15-L14-K13-E15-M15.



Youyi Chen                                yychen@watdragon.uwaterloo.ca

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Postscript:

To be honest, I don't like to interpret Ji Xin Wang's golden rule
this way. I feel that the so-called Qi-Zi-tactics (A high tech in go?)
is only a dirty trick comparing to our great legend's golden rules.
However, it seems no way to avoid dirty in this one. 
In my view, "to abandon when in danger" is as well a dirty trick,
since "to be in a danger situation" is unbalanced and an unbalanced 
situation is dirty. Perhaps, one has to use dirty trick to get out a 
dirty situation.

ychen
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