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Team Games >> 2009 One vs TheMob >> Move  20
(Message started by: Simon on Sep 17th, 2009, 11:57pm)

Title: Move  20
Post by Simon on Sep 17th, 2009, 11:57pm
Fritzlein has moved:

19s rc6w ed4n ed5n ed6w

Title: Re: Move  20
Post by RonWeasley on Sep 18th, 2009, 3:50am
The only move I can find that doesn't lose material is

20g Mc3e Md3e Dh4s cg4e

Other moves either let silver defend the f3 horse with 20s ec6e Hc7nx ed6s ed5s, block e4 so the M can't move the f4 horse, or trade H for d after 20g Mc3e Md3e Me3w hf3w.

Title: Re: Move  20
Post by Adanac on Sep 18th, 2009, 3:55am

on 09/17/09 at 23:57:29, Simon wrote:
Fritzlein has moved:

19s rc6w ed4n ed5n ed6w


The game will probably be decided in the next few moves, so we should put some heavy analysis into this decision.

I think it's suicide to put our camel on e4, because Fritz could then retreat the elephant to d4.  We also need an "obstacle" piece to prevent the elephant from capturing our horse AND returning to d4 or e4 next move.  I don't have time for a full analysis right now, but I nominate this move:

20g Mc3e Md3e Cd2n Cd3n

If Fritzlein responds with

20s de5s re7s re6s dc5e

then we can save our horse but the board will get crazy-messy and we may not get an opportunity to take down the silver horse.

Title: Re: Move  20
Post by RonWeasley on Sep 18th, 2009, 4:24am

on 09/18/09 at 03:55:34, Adanac wrote:
20g Mc3e Md3e Cd2n Cd3n

If Fritzlein responds with

20s de5s re7s re6s dc5e

The response instead could be

20s de5s re6s re6s ra5s, leaving the silver dog on c5.  Gold's effort to save the horse by moving C->d6 loses the cat quickly.

Title: Re: Move  20
Post by arimaa_master on Sep 18th, 2009, 5:10am
My suggestion is:

20g Mc3e Md3e Dh4s Cc4s

Title: Re: Move  20
Post by chessandgo on Sep 18th, 2009, 7:38am
ahhh, nice Dh4s step, I had not found it. Now I can breethe better :)

I like Ron's move, I think arimaa_master's move does not work, and feel as Ron does about Greg's move.

After 20g Mc3e Md3e Dh4s X, seems like we trade horses, and I'm not sure for who it's good. Silver will have a harder time controlling f3 as our Hf2 comes into play, but we no longer have an attacking Horse on the west. We have to be extremely careful though that our caMel does not get cut away from the west, otherwise silver will destroy our western wing quickly with h+d.

I think that after arimaa_master's move what happens is even worse:

20g Mc3e Md3e Dh4s Cc4s
20s ec6e Hc7s Hc6x ed6s ed5s
21g cg4e Eg3n Eg4s hf4e hf3x
21s ed4s Me3n ed3e X
and our caMel floats on e4.



After Ron's move:

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x rg5s rh5w
21g Me3n Me4s hf4w hf3x Cc4s
does not seem possible because:
21s ed6s ed5s ed4s rg4w
22g Me3e Mf3w rf4s rf3x Me3e
22s ed3e he4w dc5s hd4s
looks bad for us.

So:
20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x rg5s rh5w
21g Me3n Me4s hf4w hf3x Cc4e
might be possible since:
21s rg4w ed6s Cd4w ed5s
might not work due to:
22g Cd2n Cc4s Rc2e Dc1n

Another line might be:

20g Dh4s cg4e Mc3e Md3e
20s rg5s rh5w ec6e Hc7s Hc6x
21g Me3n Me4s hf4w hf3x Me3w
21s rg4w ed6s ed5s de5e
22g Hf2n Hf3w rf4s rf3x Cc4s
22s he4e ed4e He3e ee4s

Overall seems complicated, but unless I'm missing something we should find (I hope) a way to get back to the previous state with just a horse trade.

Title: Re: Move  20
Post by RonWeasley on Sep 18th, 2009, 8:54am
I'm liking Adanac's suggestion for deep analysis.  I'm not good at making move trees, but I think maintaining a tree with brief annotation will help us organize this tactical minefield.  Please volunteer, anybody!  Then I encourage all to check each others' work because there are lots of exchange and positional possibilities that are easy to get wrong a few moves down the line.

Title: Re: Move  20
Post by jdb on Sep 18th, 2009, 10:43am
I will make up a tree after work tonight.

The number in the square brackets after the move is the first post where the move is mentioned.

The analysis tree:
20g Mc3e Md3e Cd2n Cd3n [2]
.   20s de5s re7s re6s ra5s [3]


20g Mc3e Md3e Dh4s cg4e [1]
.   20s rg5s de5s ec6e Hc7s Hc6x [12]
.   .   21g de4w Me3n Me4s hf4w hf3x
.   .   .   21s ed6s ed5e ee5e ef5s
.   20s ec6e Hc7s Hc6x ed6s ed5s [10,11,13]
.   .   21g Eg3n Eg4s hf4e hf3x Me3w
.   .   .   21s Md3e ed4s Me3e ed3e     [Not good for gold]
.   .   .   21s ed4e Md3n ee4s Md4e
.   .   .   .   22g Cc4e de5n Me4n Me5w



20g Mc3e Md3e Dh4s Cc4s [4]
.   20s ec6e Hc7s Hc6x ed6s ed5s [5]
.   .   21g cg4e Eg3n Eg4s hf4e hf3x
.   .   .   21s ed4s Me3n ed3e X

20g Dh4s Mc3e Md3e Cc4e [14]
.   20s de5s re7s re6s rh5s

Title: Re: Move  20
Post by mdk on Sep 18th, 2009, 10:56am
One other possibility perhaps:
20g Mc3e Md3e Cd2n Cd3n

oh now i see this was already posted

Title: Re: Move  20
Post by jdb on Sep 18th, 2009, 3:27pm

Quote:
After Ron's move:

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x rg5s rh5w
21g Me3n Me4s hf4w hf3x Cc4s  
does not seem possible because:
21s ed6s ed5s ed4s rg4w
22g Me3e Mf3w rf4s rf3x Me3e
22s ed3e he4w dc5s hd4s  
looks bad for us.

So:
20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x rg5s rh5w
21g Me3n Me4s hf4w hf3x Cc4e  
might be possible since:
21s rg4w ed6s Cd4w ed5s
might not work due to:
22g Cd2n Cc4s Rc2e Dc1n

Another line might be:

20g Dh4s cg4e Mc3e Md3e
20s rg5s rh5w ec6e Hc7s Hc6x
21g Me3n Me4s hf4w hf3x Me3w
21s rg4w ed6s ed5s de5e
22g Hf2n Hf3w rf4s rf3x Cc4s
22s he4e ed4e He3e ee4s


20g Dh4s cg4e Mc3e Md3e
20s rg5s de5s ec6e Hf7s Hc6x
21g rg4n Eg3n Eg4s hf4e hf3x
21s ra6s ra5s ed6s ed5s

Silver now has a goal threat, so gold can't capture. I think its still OK for gold, its just another tactical resource silver has available.

Title: Re: Move  20
Post by Hannoskaj on Sep 19th, 2009, 12:21am
I think that on all moves with camel e3, Silver's reply is
20s Ec6e Hc7sX Ed6ss

In any case its elephant is most useful back, so let's go as soon as possible, all the more since I can't see any trick to gain time otherwise, and it does keep the camel from taking horse.

On this basis,
20g Mc3ee Dh4s Cg4e
is most natural since it gives us a free step to choose on 21g, and not immediately on 20g.

But in any case, I don't like that much since I don't see any way to keep Silver to hem our camel in the east, be it after
21g Eg3ns Hf4e Hf3X x
or
21g Eg3n Hf4w(or n) Eg4w Hf3X x  (Me3w with the hope S cannot immediately drag camel ?)


Among the crazy ideas, though probably only crazy and not good, there is
20g Cd2nn Dh4s Mc3e
For example
20s E takes h De5ss
21g M flips d to c3
21s E->e3
and try to make something in the east with camel.

Title: Re: Move  20
Post by Hannoskaj on Sep 19th, 2009, 12:45am
On further analysis, I think that

20g Mc3ee Dh4s cg4e
20s Ec6e hc7nX Ed6ss
21g Eg3ns hf4e hf3X Me3w
should be OK.

After
21s Ed4e md3n Ee4s md4e
I think we have the upper hand after the complicated
22g Cc4e de5e(or n) Me4nw

Anyhow, I agree this looks like a critical moment, but if nobody can come up with a credible alternative to Ron's
20g Mc3ee Dh4s cg4e
we should not lose time on it. If the choice is Fritzlein's or to be really made on 21g, better let him think on his time or think on next move...

Title: Re: Move  20
Post by chessandgo on Sep 19th, 2009, 3:14am

on 09/18/09 at 15:27:47, jdb wrote:
20g Dh4s cg4e Mc3e Md3e
20s rg5s de5s ec6e Hf7s Hc6x
21g rg4n Eg3n Eg4s hf4e hf3x
21s ra6s ra5s ed6s ed5s

Silver now has a goal threat, so gold can't capture. I think its still OK for gold, its just another tactical resource silver has available.


Perhaps

20g Dh4s cg4e Mc3e Md3e
20s rg5s de5s ec6e Hc7s Hc6x
21g de4w Me3n Me4s hf4w hf3x
is better, for
21s x x ra6s ra5s might be met with
22g Me3w Md3e dd4s Dc1w

So the game might go:

20g Dh4s cg4e Mc3e Md3e
20s rg5s de5s ec6e Hc7s Hc6x
21g de4w Me3n Me4s hf4w hf3x
21s ed6s ed5e ee5e ef5s

Looks tense, but I can't see a clear plan for silver here, since it will be hard for him to hold to f3 without the elephant. We might have time to activate M+D on the west and go for a c3 capture or a c6 attack with D+R (+M?) + ...

Title: Re: Move  20
Post by chessandgo on Sep 19th, 2009, 3:26am
Hannoskaj:

20g Cd2n Cd3n Dh4s Mc3e
20s ec6e Hc7s Hc6x rh5s de5s saves the hf3

Now

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s

Oops, looks like this answer had not been considered even though it's the most logical move :) It also seems to be the most painful for us.

Your line

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s ed4e Md3n ee4s Md4e
22g Cc4e de5n Me4n Me5w

does look ok for gold to me, but there's also

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e

where I can't find a move. Oops.

Title: Re: Move  20
Post by chessandgo on Sep 19th, 2009, 3:30am
20g Dh4s Mc3e Md3e Cc4e
20s de5s re7s re6s rh5s

looks bad as well. Hmmm.

Title: Re: Move  20
Post by Hannoskaj on Sep 19th, 2009, 3:36am

on 09/19/09 at 03:26:22, chessandgo wrote:
Hannoskaj:

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e

where I can't find a move. Oops.


Ah, I did seem to remember there was always a way to push the camel East, but could not find it again last time I looked at this 21g...

Title: Re: Move  20
Post by Adanac on Sep 20th, 2009, 4:26am

on 09/19/09 at 03:26:22, chessandgo wrote:
20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e

where I can't find a move. Oops.


I think this will be a major problem.  The 2 moves by Fritzlein in this variation are the two most likely candidates for him to play.  Thus, if we can't get a good position here, then the entire variation is dubious.

If we immediately play

22g Mf3n Mf4n rg5n Mf5e
22s ee3n ee4e ef4n hg4w

and we lose a camel for horse exchange.  After that, the h6 rabbit can take a step west to block out any future escape for our camel to the northeast.  Otherwise, if we try to save our cat, then the silver dog can occupy b3 and our position is horrible:

22g Cc4s Cc3w Rb4w Dc1w
22s dc5s dc4w Cb3s db4s

Can anyone find a better alternative move for us at any point?  If not, I absolutely hate the fact that we're going to either lose material or have any pieces infiltrate our SW trap.

Title: Re: Move  20
Post by arimaa_master on Sep 20th, 2009, 5:06am

on 09/18/09 at 07:38:28, chessandgo wrote:
I think that after arimaa_master's move what happens is even worse:

20g Mc3e Md3e Dh4s Cc4s
20s ec6e Hc7s Hc6x ed6s ed5s
21g cg4e Eg3n Eg4s hf4e hf3x
21s ed4s Me3n ed3e X
and our caMel floats on e4.


Yes, you are right, of course. So forget about my move!

Title: Re: Move  20
Post by Adanac on Sep 20th, 2009, 6:04am
I’ve been analyzing this variation that I proposed earlier, except this time the silver dog stays on c5.  This prevents us from saving the c7 horse but makes our board centre more flexible:

(Note:  these are just a few of the possible variations I looked at.  It would take ridiculous amounts of time to fully analyze every variation in these crazy tactics!)

20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rb8e
21g Cd4n de4w Me3n Re2n

At this point Fritz can try to capture our horse and cat, but we get a mobile central camel and a strong strategic position.  Alternatively, he can abandon the c7 horse in an attempt to trap our camel, but I think we can survive that.

21s ec6e ed6e re5e ee6s
22g Dh4s cg4e hf4e hf3x Me4e
22s ee5s rf5w Mf4n ee4e
23g Hce7e Hd7s Hd6e Dc1w

Alternatively, Fritz can fight for the c3 trap and even though we’ll have a difficult time capturing his horses, I think we’ll do well on a messy board holding a camel hostage:

21g Cd4s de4w Me3n Re2n
21s Cc4s dc5s Re3s hf3w
22g Cd3s he3w Me4s Re1w
22s hf4n cg4w ec6s Hc7s Hc6x
23g Me3n cf4s cf3x Me4e Dh4w
23s re5s re4s ec5e ed5e
24g Mf4w Dg4w re3e rf3x Me4s

At this point, Fritz can either play to contain our camel in the east or capture our dog:

24s ee5s Me3e ee4s rh6w

24s ee5s hf5w Df4n ee4e
25g Rd1e Cd2s hd3s Me3w
25s ef4w ee4s Df5n Df6x he5e
26g Re1e Cd1e hd2s Md3s

Our position gets messy, and we’re down material, but our stronger camel should give us excellent chances.

Title: Re: Move  20
Post by Hannoskaj on Sep 20th, 2009, 7:00am
Adanac was five minutes faster than me.

I copy my initial message and add below comments on his variations.


Quote:
20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e


I have looked closely at this position and definitely don't like it. The aggressive 22g Me4 Hf4
loses in the fastest destruction war that ensues.

Variations where we take with our elephant on f4 seemed more playable, but we are fighting for equality.

So I have had another look at Adanac's
20g Mc3ee Cd2nn.

We look OK if Silver exchanges horses immediately.

20s De5s Re7ss Ra6s (Rh6w might be better)
21g Cd4n de4w Me3n x (Dc1w)

Complete control on f3 (+c3 tricks, possible f6) for one more turn makes it more than worth the possible cat sacrifice in the central blockade.

20s De5s Re7ss Cc5e
21g Me3w hf3w Md3s he3w
I think we hold our own end. And there are probably other possibilities on this 21g.

Another critical line would be
20s Dc5e cd4e Dd5s x (Rh6w)
Maybe
21g Cc4n Me3w hf3w x (Dc1w)
or
21g Me3we dd4s Ce4w ?

Definitely very sharp, but I prefer that 20g to any alternative right now.


on 09/20/09 at 06:04, Adanac wrote:
20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rb8e
21g Cd4n de4w Me3n Re2n



There (with 20s Rh6w instead of Rb8e), 21s re3w Hf3w Ec6w hc7nX looks good for Silver. That's why I don't like Re2n. Moreover the rabbit on e3 makes it harder for us to play on the c3 trap, even for  one-time threats on dog and horse, which seemed useful to me in my testplay.
Do you have any efficient reply to the above 21s ?

However, i did not see the threat on camel
The alternative would mean we have to fight more if Fritz goes after camel. The following is again a mess, but I think our good control of traps, the advanced rabbits and the fact that it's hard to freeze camel makes it playable:

20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rh6w
21g Cd4n de4w Me3n x (Dc1w)
21s ec6e ed6e re5e ee6s
22g Re2n dd4s Me4w Cd5n



By the way, in the second part of your post, you work with 21g Cd4s instead of Cd4n. Not the same. I think north is more interesting.


Anyhow, after Adanac's 20g, we have at least practical chances from the mess, even if we may not be better (though I like the position). That sure is better than a straightforward road to strategic disadvantage. Adanac's move gets my vote.


Title: Re: Move  20
Post by arimaa_master on Sep 20th, 2009, 7:27am

Ok, my vote for 20g Mc3e Md3e Cd2n Cd3n  too.

Title: Re: Move  20
Post by Adanac on Sep 20th, 2009, 10:08am
Hannoskaj:

- You’re right, I mix-and-matched variations with Cd4n and Cd4s.  I had looked at both variations and then when I summarized everything for the forum I got sloppy.  The cat step south on 21g seems like a wasted step after we moved it north on 20g – except that it was only needed as a temporary obstacle.  But I also kind of like sending the cat north as a sacrifice, because it’s such a great obstacle while we’re trying to capture the f3 trap.  I’ll have to be more careful in the future when compiling analysis to make sure it’s more focused.

- If Fritz plays rh6w on move 20s, then we can advance our h4 dog north.  It simultaneously threatens the g6 rabbit and our elephant can again access f4.  It’s similar to RonWeasley’s suggestion, except the tactics work out much better for us.

- I don’t like advancing the e2 rabbit north but, unfortunately, there are variations where we’ll need it to keep the camel mobile if Fritz doesn’t capture the c7 horse.

- If we do clog the middle, I think we can actually proceed slowly with the idea of either saving the c7 horse or capturing lots of small pieces in f3, depening upon the response on 22s below.  This is yet another candidate move for 21g, giving us a 3rd viable option for our next move:

20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rb8e
21g Cd4n Cc4e Cd5n Re2w
21s Cd6e ec6e Ce6e Cf6x ed6e
22g Me3s hf3w he3w Me2n
22s ee6w ed6w ec6e Hc7s Hc6x
23g hd3w hc3x Me3w Md3e Dc1w

Fritzlein can deviate in a few ways here, but I’m really starting to like the idea of sending our cat north to create a wall of pieces in the middle.  My instinct says that this 21g C -> d6 isn’t as strong as our other alternatives, but I feel better about this proposed 20g knowing that we have lots of options available on 21g.

Title: Re: Move  20
Post by jdb on Sep 20th, 2009, 6:07pm

Quote:
20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e  


I have looked closely at this position and definitely don't like it. The aggressive 22g Me4 Hf4  
loses in the fastest destruction war that ensues.


As far as I can tell, this 22g doesn't lose any material. We end up exchanging camels and maybe horses. I have no idea who is winning, but material is equal.

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e  
22g Mf3n Mf4w Hf2n Hf3n
22s re7s de5w Me4n ee3n



Title: Re: Move  20
Post by Hannoskaj on Sep 20th, 2009, 10:37pm

on 09/20/09 at 18:07:57, jdb wrote:
As far as I can tell, this 22g doesn't lose any material. We end up exchanging camels and maybe horses. I have no idea who is winning, but material is equal.


Just take cat:
22g Mf3nw Hf2nn
22s D takes cat
23g Me4e6 takes dog
23s E takes m
24g Eg3e3 takes camel
24s Ee6ss hf4n Ee4e
Beurk.


Quote:
- If Fritz plays rh6w on move 20s, then we can advance our h4 dog north.  It simultaneously threatens the g6 rabbit and our elephant can again access f4.  It’s similar to RonWeasley’s suggestion, except the tactics work out much better for us.  


Interesting. I had seen that gave us goal attacks possibilities along h column (and that's why I'm not too fond of killing g6 rabbit; it's a good shield) but had forgot it also threatened horse.
Silver might still not be that bad here, I think.


Quote:
- I don’t like advancing the e2 rabbit north but, unfortunately, there are variations where we’ll need it to keep the camel mobile if Fritz doesn’t capture the c7 horse.

Do you have a specific example? Otherwise I like better playing it when we need it, when Fritz uses the elephant to go after camel, as suggested in my previous post. And if Fritz follows another line, we are not impeded by this rabbit in the way.

Title: Re: Move  20
Post by jdb on Sep 21st, 2009, 5:49am

Quote:
Just take cat:
22g Mf3nw Hf2nn
22s D takes cat
23g Me4e6 takes dog
23s E takes m  
24g Eg3e3 takes camel
24s Ee6ss hf4n Ee4e  


25g Ee3n Ee4n rg5n Hf5e

At this point we are up a dog for a cat.

Now silver has some choices
25s Rb4e cb5s hg4s ef4n
26g Re2n Ee5s Rc2n Dc1n
26s ef5s Hg5w Hf5n Hf6x ef4n
27g Ee4e Ef4s Ef3n hg3w hf3x
27s dc5e Rc4n Rc5n Rc6x dd5w

Now its a dog for a cat and rabbit. Once again, not sure who is winning.

Title: Re: Move  20
Post by RonWeasley on Sep 21st, 2009, 9:33am

on 09/20/09 at 06:04:46, Adanac wrote:
20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rb8e
21g Cd4n de4w Me3n Re2n

At this point Fritz can try to capture our horse and cat, but we get a mobile central camel and a strong strategic position.  Alternatively, he can abandon the c7 horse in an attempt to trap our camel, but I think we can survive that.

I'm worried about the following continuation where silver uses the rabbits on e5 and g5 to protect his horse:

21s Re3w hf3w rh6w (protecting the f6 trap) ra6s
22g he3s Mf3w Cc4s Cc3w
22s hf4w re5e re5s dc5s
23g Eg3w Ef3e rf4s rf3x Rh2n
23s ec6e Hc7n Hc6x Rg5w Rf5s

and when gold takes the rabbit, e->f4 covers the f3 trap and gold is behind material with a hanging cat.  Gold can get a horse frame next, but it doesn't seem like enough compensation.

Title: Re: Move  20
Post by mdk on Sep 21st, 2009, 12:45pm

on 09/21/09 at 09:33:10, RonWeasley wrote:
I'm worried about the following continuation where silver uses the rabbits on e5 and g5 to protect his horse:

21s Re3w hf3w rh6w (protecting the f6 trap) ra6s
22g he3s Mf3w Cc4s Cc3w
22s hf4w re5e re5s dc5s
23g Eg3w Ef3e rf4s rf3x Rh2n
23s ec6e Hc7n Hc6x Rg5w Rf5s

and when gold takes the rabbit, e->f4 covers the f3 trap and gold is behind material with a hanging cat.  Gold can get a horse frame next, but it doesn't seem like enough compensation.


What about

22g Cc4s Cc3w hf4n Me4e

Title: Re: Move  20
Post by Adanac on Sep 21st, 2009, 3:23pm

on 09/21/09 at 09:33:10, RonWeasley wrote:
I'm worried about the following continuation where silver uses the rabbits on e5 and g5 to protect his horse:

21s Re3w hf3w rh6w (protecting the f6 trap) ra6s
22g he3s Mf3w Cc4s Cc3w
22s hf4w re5e re5s dc5s
23g Eg3w Ef3e rf4s rf3x Rh2n
23s ec6e Hc7n Hc6x Rg5w Rf5s

and when gold takes the rabbit, e->f4 covers the f3 trap and gold is behind material with a hanging cat.  Gold can get a horse frame next, but it doesn't seem like enough compensation.


Good point Ron.  Even though mdk found a strong improvement for 22g, we’re still going to get into a messy situation where we’ll trade Horse for Horse with some terribly weak gold cats stuck in the north.  We’ll need to improve the variation even further to make it worth consideration.  

Maybe the Re2n move on 21g wasn’t necessary after all.  The line I was worried about earlier was our camel not being able to capture the horse:

20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rb8e
21g Cd4n de4w Me3n Dc1w
21s ec6e ed6e re5e ee6s
22g Re2n dd4s Me4w Db1n
22s ee5s Cd5e Md4n ee4w

The Re2n step on 21g makes it possible to capture the horse even if Fritz retreats the elephant to e5.  But I’m starting to believe that we can survive just fine without that awkward rabbit move to e3.  Instead, we can leave the e3 square unoccupied with better results if Fritz does decide to capture our horse:

20g Mc3e Md3e Cd2n Cd3n
20s de5s re7s re6s rb8e
21g Cd4n de4w Me3n Dc1w
21s hf3w Cc4s dc5s rh6w
22g Re2w he3s Me4s Cc3w
22s hf4n cg4w ec6e Hc7s Hc6x
23g Me3e Mf3w cf4s cf3x Me3w
23s re5s re4e dd4e dc4n

We’re losing a little bit of material in this variation, but I think our long-term position is great.  Our camel is mobile and we’ve got lots of rabbits for an advance in the northwest.  What I like about the variation as a whole is that silver’s army gets very disorganized with the congested middle and the elephant away from the Southeast trap.  We’ll still hold the camel hostage while eventually re-organizing for a strong counter-attack on the other side.

Title: Re: Move  20
Post by Adanac on Sep 21st, 2009, 4:54pm

on 09/21/09 at 05:49:19, jdb wrote:
25g Ee3n Ee4n rg5n Hf5e

At this point we are up a dog for a cat.

Now silver has some choices
25s Rb4e cb5s hg4s ef4n
26g Re2n Ee5s Rc2n Dc1n
26s ef5s Hg5w Hf5n Hf6x ef4n
27g Ee4e Ef4s Ef3n hg3w hf3x
27s dc5e Rc4n Rc5n Rc6x dd5w

Now its a dog for a cat and rabbit. Once again, not sure who is winning.


I do like this particular line for our side, but what if Fritz plays the following 22s instead?  I can’t find a way for us to escape unscathed.  I think our camel and horse will be doomed once the silver horse occupies f4, freeing the elephant.

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e
22g Mf3n Hf2n Mf4w Hf3n
22s Me4w ee3n Hf4n ee4e
23g Md4n Md5n Md6e Re2n
23s dc5e de5s Re3w de4s

Title: Re: Move  20
Post by jdb on Sep 22nd, 2009, 5:01am

on 09/21/09 at 16:54:39, Adanac wrote:
I do like this particular line for our side, but what if Fritz plays the following 22s instead?  I can’t find a way for us to escape unscathed.  I think our camel and horse will be doomed once the silver horse occupies f4, freeing the elephant.

20g Dh4s cg4e Mc3e Md3e
20s ec6e Hc7s Hc6x ed6s ed5s
21g Eg3n Eg4s hf4e hf3x Me3w
21s Md3e ed4s Me3e ed3e
22g Mf3n Hf2n Mf4w Hf3n
22s Me4w ee3n Hf4n ee4e
23g Md4n Md5n Md6e Re2n
23s dc5e de5s Re3w de4s


I looked at your 22s. I agree it looks very good for silver.

Title: Re: Move  20
Post by chessandgo on Sep 23rd, 2009, 8:54am
Ok, so what's wrong with

20g Mc3e Md3e Cd2n Cd3n

in the end?

After
20s de5s re7s re6s ra6s
21g Cd4n de4w Me3n Dh4s (or maybe even Dc1w or any other step)
21s ec6e ed6e re5e ee6s
22g Re2n dd4s Me4w Dh4s

Looks good for us [on 21g I think Greg's last step Re2n might fail to 21s ec6e Hc7s Hc6x Re3w hf3w]

After a more peaceful 20s like

20g Mc3e Md3e Cd2n Cd3n
20s ec6e Hc7s Hc6x ed6s de5s
21g de4n Me3n Me4s hf4w hf3x
21s de5n ed5e ee5e ef5s

we have at worst

22g Cd4s Cd3s Me3w Cc4s

with an enjoyable position.


If we don't play the Dh4s step on 21g maybe we're still ok anyway, as silver's 21s e to e5 might be that threatening:

20g Mc3e Md3e Cd2n Cd3n
20s re7s de5s re6s ra6s
21g Cd4n de4w Me3n Dc1w
21s ec6e ed6e re5e ee6s
22g Re2n dd4s Me4w Db1n

again it's complicated but it looks ok for us.


Remains the fighting

20g Mc3e Md3e Cd2n Cd3n
20s re7s de5s re6s ra6s
21g Cd4n de4w Me3n Dh4s
21s Cc4s dc5s dd4s hf3w

but I think we should be doing fine in this fight (to be checked).


I hope I'm not missing something obvious, and anyway several positions need to be checked, but at the moment Greg's 20g Mc3e Md3e Cd2n Cd3n look good to me.

Title: Re: Move  20
Post by Adanac on Sep 23rd, 2009, 5:24pm
Are we ready for a vote now?  We're about to dip into our reserves and we've had quite a bit of deep analysis into each variation.

Title: Re: Move  20
Post by RonWeasley on Sep 24th, 2009, 4:33am
After all this, the only move that gives us any hope seems to be

20g Mc3w Md3w Cd2n Cd3n

So I propose a voice vote.  Mine, Adanac and chessandgo count as 3 so far.  Others who have expressed opinions, please do so again.  I'll move if we get 6 or an objection.

Title: Re: Move  20
Post by jdb on Sep 24th, 2009, 5:44am

on 09/24/09 at 04:33:32, RonWeasley wrote:
After all this, the only move that gives us any hope seems to be

20g Mc3w Md3w Cd2n Cd3n

So I propose a voice vote.  Mine, Adanac and chessandgo count as 3 so far.  Others who have expressed opinions, please do so again.  I'll move if we get 6 or an objection.


Play it, seems like the only option.

Title: Re: Move  20
Post by Hannoskaj on Sep 24th, 2009, 9:58am
Strongly voiced before, as strongly voiced now. +1

Title: Re: Move  20
Post by camelback on Sep 24th, 2009, 11:14am
count me in too for 20g Mc3w Md3w Cd2n Cd3n

Title: Re: Move  20
Post by RonWeasley on Sep 24th, 2009, 12:01pm
And that makes 6.  Apologies to those who strongly voiced before.  My problem is that I can't tell if subsequent posts may change your mind or if you have read those posts.  This is an inherent problem with using a forum to communicate.  Please forgive.

Title: Re: Move  20
Post by Hannoskaj on Sep 24th, 2009, 12:28pm

on 09/24/09 at 12:01:49, RonWeasley wrote:
And that makes 6.  Apologies to those who strongly voiced before.  My problem is that I can't tell if subsequent posts may change your mind or if you have read those posts.  This is an inherent problem with using a forum to communicate.  Please forgive.


That was no accusation! Sorry if you considered it so! And your observation on the way forums work is quite correct.



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