Welcome, Guest. Please Login or Register.
Apr 19th, 2024, 4:43am

Home Home Help Help Search Search Members Members Login Login Register Register
Arimaa Forum « Move 19 »


   Arimaa Forum
   Team Games
   2009 One vs TheMob
(Moderators: supersamu, RonWeasley)
   Move 19
« Previous topic | Next topic »
Pages: 1  Reply Reply Notify of replies Notify of replies Send Topic Send Topic Print Print
   Author  Topic: Move 19  (Read 1906 times)
Simon
Forum Guru
*****



Arimaa player #1198

   


Gender: male
Posts: 125
Move 19
« on: Sep 7th, 2009, 1:00am »
Quote Quote Modify Modify

Fritzlein has moved:
 
18s dc6s de6s rf7w he3e
IP Logged
Adanac
Forum Guru
*****



Arimaa player #892

   
Email

Gender: male
Posts: 635
Re: Move 19
« Reply #1 on: Sep 7th, 2009, 5:26am »
Quote Quote Modify Modify

on Sep 7th, 2009, 1:00am, Simon wrote:
Fritzlein has moved:
 
18s dc6s de6s rf7w he3e

 
Karl might be trying to lure us into a tactical trap here.  If we play:
 
19 Dc1w Db1n Db2n Rb4w  
19s ed4n ed5n ed6w de5s
20g Mc3e Md3e de4n Me3n  
20s ec6e Hb6e Hc6x ed6s ed5s
21g Re2n hf4n hf3x Me4e Mf4s
21s dc5n Cc4n ed4e ee4e
22g Re3n Db3n Db4s cb5s
 
I think we’re doing fine above.  But actually there’s a nasty trap where Fritz can sacrifice his f3 horse on 20s and doom our camel in the process.  
 
19 Dc1w Db1n Db2n Rb4w  
19s ed4n ed5n ed6w de5s
20g Mc3e Md3e de4n Me3n  
20s ec6e ed6s de5e ed5s
 
However, we can try a slightly different 20g Cc4e Mc3e Cd4n Md3e.  The downside to this move is that we’ll lose access to the e4 square with 20s re7s re6s Cd5s dc5e.  But we can solve that problem by playing a different 19g that would force Fritz to sacrifice a rabbit to play this move:
 
19g rb7w Hb6n rc7s Hb7e
19s ed4n ed5n ed6n de5s
20g Cc4e Mc3e Cd4n Md3e
20s Cd5s dc5e rc6x re7s re6s
 
Thanks to silver’s weak c6 trap, we can wiggle out of this now:
 
21g Cd2n Cd4w de4w Me3n
21s ed7e ee7e re5e ee6s
22g Re2w Cd3e dd4s Me4w
22s dd5w ee5s Md4n ee4w
23g Hc7e Hd7s dc5n dc6x Md5w
 
The point to all of this is that Fritzlein’s 20s is not very good in this variation because weak c6 trap and the lost rabbit.  And that gives us tactical room to play more aggressively with our camel if his elephant is indeed planning to attack our horse soon.  Unless there’s a fatal flaw in my analysis, I believe we can safely play:
 
19g rb7w Hb6n rc7s Hb7e
IP Logged


arimaa_master
Forum Guru
*****



Arimaa player #2010

   


Gender: male
Posts: 358
Re: Move 19
« Reply #2 on: Sep 7th, 2009, 12:08pm »
Quote Quote Modify Modify

on Sep 7th, 2009, 5:26am, Adanac wrote:

 
Unless there’s a fatal flaw in my analysis, I believe we can safely play:
 
19g rb7w Hb6n rc7s Hb7e

 
This is my suggestion too:
 
19g rb7w Hb6n rc7s Hb7e
 
« Last Edit: Sep 7th, 2009, 12:08pm by arimaa_master » IP Logged
Hannoskaj
Forum Guru
*****



Arimaa player #3794

   


Gender: male
Posts: 75
Re: Move 19
« Reply #3 on: Sep 8th, 2009, 12:45am »
Quote Quote Modify Modify

I have no time right now but to look quickly over Adanac's variations.
19g rb7w Hb6n rc7s Hb7e  
is the kind of moves I like.
 
Now, if Fritz sends its elephant so far away, it's to use it! If he has to come back while having let us play around f3, it's not surprising we're well.
In particular, in the following line:
 
on Sep 7th, 2009, 5:26am, Adanac wrote:

 
19g rb7w Hb6n rc7s Hb7e
19s ed4n ed5n ed6n de5s
20g Cc4e Mc3e Cd4n Md3e
20s Cd5s dc5e rc6x re7s re6s
 
Thanks to silver’s weak c6 trap, we can wiggle out of this now:
 
21g Cd2n Cd4w de4w Me3n
21s ed7e ee7e re5e ee6s
22g Re2w Cd3e dd4s Me4w
22s dd5w ee5s Md4n ee4w
23g Hc7e Hd7s dc5n dc6x Md5w
 

 
why not  
21s hc6x Ed7w Hf3w Re5e ?
 
Also, I don't know if Fritz would play essentially for a tactical trap. I'm not yet sure of its point with He3e.
IP Logged
Adanac
Forum Guru
*****



Arimaa player #892

   
Email

Gender: male
Posts: 635
Re: Move 19
« Reply #4 on: Sep 8th, 2009, 3:23am »
Quote Quote Modify Modify

on Sep 8th, 2009, 12:45am, Hannoskaj wrote:
Also, I don't know if Fritz would play essentially for a tactical trap. I'm not yet sure of its point with He3e.

 
You're right, he probably wasn't specifically playing for a trap but nonetheless our b6 horse is almost forced to move on 19g or we'll lose it without our camel having the ability to fight back against the f4 horse (for the tactical reasons described earlier).
 
However, the real motivation for Fritzlein's he3e step was more likely long-term practicality.  Because our elephant cannot access f4 and our camel can't easily reach it even if the silver elephant moves to c6, then placing the other horse on f3 is a "safe" move with no short-term risks.  Why leave it on e3 as a target for our camel?
 
Long-term (though this won't be easy to achieve) I think our most logical path to victory starts with a c7 horse and a b6 dog.  From there we'll be able to begin a rabbit march on the west side.  I also like the idea of having a mobile horse on the 7th rank -- it's a little too constricted on the b6 square right now.
IP Logged


RonWeasley
Forum Moderator
Forum Guru
*****




Harry's friend (Arimaa player #441)

   


Gender: male
Posts: 882
Re: Move 19
« Reply #5 on: Sep 8th, 2009, 4:02am »
Quote Quote Modify Modify

Bullying the H to c7 looks OK to me.
 
Eventually I see silver replacing one of the horses with a dog, but the h->f3 move doesn't support that.  The overall plan of H->c7, D->b6 is something Fritz will have to address.
IP Logged
RonWeasley
Forum Moderator
Forum Guru
*****




Harry's friend (Arimaa player #441)

   


Gender: male
Posts: 882
Re: Move 19
« Reply #6 on: Sep 9th, 2009, 3:01am »
Quote Quote Modify Modify

So far only one move being discussed.  Four mobsters show varying levels of support.  Should we just do it?
IP Logged
Soter
Forum Guru
*****



Arimaa player #2381

   
Email

Gender: male
Posts: 138
Re: Move 19
« Reply #7 on: Sep 9th, 2009, 9:36am »
Quote Quote Modify Modify

I'm in favour of 19g rb7w Hb6n rc7s Hb7e too.
IP Logged
jdb
Forum Guru
*****



Arimaa player #214

   


Gender: male
Posts: 682
Re: Move 19
« Reply #8 on: Sep 9th, 2009, 10:06am »
Quote Quote Modify Modify

One question, why did fritz move the horse east?
IP Logged
Soter
Forum Guru
*****



Arimaa player #2381

   
Email

Gender: male
Posts: 138
Re: Move 19
« Reply #9 on: Sep 9th, 2009, 10:44am »
Quote Quote Modify Modify

Quote:
One question, why did fritz move the horse east?

I don't know, but maybe he wants to have e3 occupied by his dog ( d  e5 -> e3 ) in order to block our E.
« Last Edit: Sep 9th, 2009, 10:50am by Soter » IP Logged
chessandgo
Forum Guru
*****



Arimaa player #1889

   


Gender: male
Posts: 1244
Re: Move 19
« Reply #10 on: Sep 9th, 2009, 12:03pm »
Quote Quote Modify Modify

I like Greg's argument that the horse is safer on f3 than e3, and I think it also enables silver to complete the f3 grip quicker than by bringing a rabbit all the way to f3, and also decreases the cost when the elephant leaves (the e3 piece will be captured, better make it a dog than a horse).
 
We might keep in mind that now our Horse "can" go to e3, although silver will take f2 with his hf3. He will also have to move his camel away from g2, otherwise we'd next flip the m to h3 and hostage the hf2 to g2, retaking control over f3.
 
I'm away in Danemark so I don't have time to look at the variations, you guys have fun with the analysis
 
Jean
« Last Edit: Sep 9th, 2009, 12:04pm by chessandgo » IP Logged

RonWeasley
Forum Moderator
Forum Guru
*****




Harry's friend (Arimaa player #441)

   


Gender: male
Posts: 882
Re: Move 19
« Reply #11 on: Sep 9th, 2009, 12:13pm »
Quote Quote Modify Modify

I'm now showing 5 votes for our favorite move with chessandgo abstaining.  If no objections by tomorrow morning, I will make this move.
IP Logged
RonWeasley
Forum Moderator
Forum Guru
*****




Harry's friend (Arimaa player #441)

   


Gender: male
Posts: 882
Re: Move 19
« Reply #12 on: Sep 10th, 2009, 3:05am »
Quote Quote Modify Modify

Done.  Next we get the dog in play while keeping the camel ready to go to e3 if the silver elephant moves north.
IP Logged
Pages: 1  Reply Reply Notify of replies Notify of replies Send Topic Send Topic Print Print

« Previous topic | Next topic »

Arimaa Forum » Powered by YaBB 1 Gold - SP 1.3.1!
YaBB © 2000-2003. All Rights Reserved.