Message-Id: <9306201546.AA18920@thor.INS.CWRU.Edu>
Date: Sun, 20 Jun 93 11:46:56 -0400
From: smg6@po.CWRU.Edu (S. Max Golem)
To: smg6@thor.INS.CWRU.Edu
Subject: Re:  Discussion problem 2.
Reply-To: smg6@po.CWRU.Edu (S. Max Golem)


Hi, people --

Here are John Tromp's thoughts on discussion problem 2:

>
>
>>   A B C D E F G H J K L M N O P Q R S T 
>>19 . . . . . . . . . . . . . . . . . . . 19 
>>18 . . O . . . . . . . . . . . . O . . . 18 
>>17 . # # O . . . . . . O . . O . . # . . 17 
>>16 . . . . O . . . . . . . . . . # . . . 16 
>>15 . . # . . . . . . . . . . . . . . . . 15 
>>14 . . . . O . . . . . . . . . . # . . . 14 
>>13 . . . . . . . . . . . . . . . . f . . 13 
>>12 . . # . . . . . . . . . . . c b O . . 12 
>>11 . . . . . . . . . . . . . . . a . . . 11 
>>10 . . . . . . . . . . . . . . d . # . . 10 
>> 9 . . O . . . . . . . . . . . . . . . .  9 
>> 8 . . . . . . . . . . . . . . . . . . .  8 
>> 7 . . . . . . . . . . . . . e . . . . .  7 
>> 6 . . O . . . . . . . . . . . . O O . .  6 
>> 5 . . . . . . . . . . . . . . O . # . .  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 
>
>Often the best way to deal with in intrusion like R12 is to exchange
>a (Q11) for b (Q12, making white somewhat heavier and then blocking his way
>out with c (P12). This is preferable to an immediate black b, after which
>white at a causes black some headaches.
>
>An alternative approach is to first jump out to d (P10)
>and if white c next, then attempt to seal in white's lower group with a
>move like e (O7). But this would be asking too much here considering
>the weakness of blacks Q16 group. If black already had R18 in place it
>would make an attractive variation though.
>
>-John Tromp (4kyu)
>
>