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Date: Sun, 20 Jun 93 15:44:02 -0400
From: smg6@po.CWRU.Edu (S. Max Golem)
To: smg6@thor.INS.CWRU.Edu
Subject: Modern Hoshi Joseki 1.
Reply-To: smg6@po.CWRU.Edu (S. Max Golem)



Hi --

Here's the first article from a three-volume set called _Modern Jo-
seki -- A Dictionary of Applications_.  (There are 292 articles in
total.) What I like about these books is that they show positions
where the joseki under discussion is applied effectively and others
where its use is a mistake.  Sometimes there is a discussion of fol-
lowup moves. 

Let me know if you think this might be useful.  The position shown
is pretty basic, so it's probably not interesting to most of you,
but it does demonstrate how the books are written.  I plan to use an
occasional article from this series in forthcoming essays on parti-
cular joseki (the first one planned is on the main variations from
the two-space high pincer of the keima kakari). 

Translating from these books is rather slow -- what you see below
took about three hours -- so I'm afraid the essays will be rather
slow in coming, especially since I plan to draw from many different
books (and you know how long library research takes).


BEGIN ENCLOSURE  ----------------------------------------------------

Hoshi Position 1
----------------

,---------------------------         ,---------------------------  
| . . . . . . . . . . . . .          | . . . . . . . . . . . . .   
| . . . . . . . . . . . . .          | . . . . . . . . . . . . .   
| . . . . . . . . . @ . . .          | . . . . . . . . . 4 . . .   
| . . . @ . @ . . . + . . .          | . . . @ . 2 . . . + . . .   
| . . . . . . . . . . . . .          | . . a . . . . . . . . . .   
| . . O . . . . . . . . . .          | . . 1 b . . . . . . . . .   
| . . . . . . . . . . . . .          | . . . . . . . . . . . . .   
| . . . . . . . . . . . . .          | . . . . . . . . . . . . .   
| . . . . . . . . . . . . .          | . . . . . . . . . . . . .   
| . . . O . . . . . + . . .          | . . . 3 . . . . . + . . .   
| . . . . . . . . . . . . .          | . . . . . . . . . . . . .

     The Basic Position                  The Sequence Diagram


White 3 is a move that teems with variations.


Important points
----------------

   1.  Because of the upper left corner is open at the 3-3 point,
       White may treat the stone at 1 lightly and invade.

   2.  The three-space extension of White 3 means that White will
       welcome the exchange of Black 'a' for White 'b'.

,---------------------------  
| . . . . . . . . . . . . .   
| . . . . . . . . . . . . .   
| . . . . . . . . . @ . . .   
| . a . @ . @ c . . + . . .   
| . . . . . . . . . . . . .     3.  After the joseki, Black has the    
| . . O . . . . . . . . . .         moves 'a' and 'b' in this diagram,
| . . . . . . . . . . . . .         while White may play 'a' or  'c'.
| . . b . . . . . . . . . .   
| . . . . . . . . . . . . .   
| . . . O . . . . . + . . .   
| . . . . . . . . . . . . .   

 Important Points for Later


A Misapplication of the Joseki
------------------------------

,---------------------------------------
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . @ . . . . . . O . . | 
| . . . @ . @ . . . + . . . @ . + . . . | 
| . . . . . . . . . . . . . . . O . . . | 
| . . O . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . 1 . . . . . + . . . . . + . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . 2 . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . @ . . . . . + . . . . . O . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
| . . . . . . . . . . . . . . . . . . . | 
`---------------------------------------'

In this position, White 1 is a mistake.  Black has already settled
the upper side, so he can continue with the splendid checking ex-
tension (hiraki-zume) of 2.  However, depending on future moves, the
aji of the 3-3 point in the lower left corner may make White 1 an
efficient move. 


An Effective Application of the Joseki
--------------------------------------
                                         
,--------------------------------------- 
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . a . 2 . . . . . . . . . |
| . . . @ . @ . . . + . . . . . + . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . O . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . 1 . . . . . + . . . . . + . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . O . . . . . + . . . . . + . . . |
| . . . . . . . . . . . . . . . . @ . . |
| . . . . . . . . . . . . . . . . . . . |
| . . . . . . . . . . . . . . . . . . . |
`---------------------------------------'

Full marks to this White 1.  Because White has the good point of 'a'
next, Black may defend with 2.  Thanks to the backup of his lower
left hoshi stone, White 1 is an efficient move. 

END ENCLOSURE  -----------------------------------------------