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        Arimaa >> General Discussion >> FEN string?
        
(Message started by: pallab on Nov 23^rd, 2008, 11:44am)

Title: FEN string?
Post by pallab on Nov 23^rd, 2008, 11:44am

Is there any way to get a FEN like string at a given position of the game.

Title: Re: FEN string?
Post by Fritzlein on Nov 23^rd, 2008, 2:54pm

I don't think any such thing is defined for Arimaa, but we could define it right now and it might become standard.

+---+---+---+---+---+---+---+---+
8 | r | | | m | | | | |
+---+---+---+---+---+---+---+---+
7 | r | R | c | D | | d | r | r |
+---+---+---+---+---+---+---+---+
6 | | | * | c | r | R | R | |
+---+---+---+---+---+---+---+---+
5 | h | r | | | | | d | |
+---+---+---+---+---+---+---+---+
4 | e | E | r | | | | | |
+---+---+---+---+---+---+---+---+
3 | H | | * | | M | * | R | |
+---+---+---+---+---+---+---+---+
2 | | R | R | | H | h | R | r |
+---+---+---+---+---+---+---+---+
1 | | | C | C | | D | | R |
+---+---+---+---+---+---+---+---+
a b c d e f g h

Imitating FEN from chess, the above diagram would (I think) be

r2m4/rRcD1drr/3crRR1/hr4d1/eEr5/H3M1R1/1RR1HhRr/2CC1D1R

If I may ask, why do you want to use FEN for Arimaa positions?

Title: Re: FEN string?
Post by pallab on Nov 23^rd, 2008, 9:21pm

Sure :),
I am playing a game here against ThePhantom, and posting at schemingmind.com forum. There one can only post position as a FEN string and corresponding diagram is auto-generated. I have already given the link to the game, but thought that addition of FEN diagram would be more appealing.

Title: Re: FEN string?
Post by Fritzlein on Nov 24^th, 2008, 3:09pm

Very cool. Thanks for spreading Arimaa into yet another corner of the gaming universe! For the rest of you, here's the link I found:
http://www.schemingmind.com/topic.aspx?topic_id=30012

But why is black missing a pawn?

I input the FEN for the game so far to get you started...

Title: Re: FEN string?
Post by rajmahendra on Aug 14^th, 2009, 10:57am

Let me add one more item in the FEN . The next move

r2m4/rRcD1drr/3crRR1/hr4d1/eEr5/H3M1R1/1RR1HhRr/2CC1D1R G or s

G Gold
s silver

we can use capital or lower case. or black or white..

How we standardize it, depends.

on 11/23/08 at 14:54:27, Fritzlein wrote:

Title: Re: FEN string?
Post by Fritzlein on Aug 14^th, 2009, 6:06pm

In Beginning Arimaa, I proposed putting the move number and side to move in front of the position. For example 28s rrr2rr1/2cdcd1r/3h2r1/8/HDE5/1r2e3/RRCD2C1/1RR2RRR would indicate that it is Silver's turn to move, and even specify that move 28s is upcoming. But I have no idea whether my proposal is reasonable or not, because I have never needed to record a position in condensed fashion.

Title: Re: FEN string?
Post by rajmahendra on Aug 14^th, 2009, 7:15pm

Wooow this is nice idea of 28s on friend !!Bravo!! :) i didn't thought of that

I see that bot can use the FEN notation to get the board position and sent the best move back to the front end.

not sure how current bot works.

and I yet to buy your book :( but will do it soon :)

on 08/14/09 at 18:06:30, Fritzlein wrote: