Chess960 SPG

David113
Posers and Puzzles 02 Nov '07 11:32
1. 02 Nov '07 11:32

Shortest Proof Game in 4.0 moves (Fischer Random Chess)
2. sonhouse
Fast and Curious
02 Nov '07 13:59
Originally posted by David113
[fen]bqnrnkrb/pppppppp/8/8/8/8/PPPPPPPP/BQRKNRNB[/fen]
Shortest Proof Game in 4.0 moves (Fischer Random Chess)
How about three moves? Is that ok?
1 N-f3 a5
2 N-g5 a4
3 NXh7 #
3. 02 Nov '07 14:27
Originally posted by sonhouse
How about three moves? Is that ok?
1 N-f3 a5
2 N-g5 a4
3 NXh7 #
A proof game is usually a game where you show the moves to obtaining a legal position. But I am unfamiliar with Fischer random chess starting position. Would someone more knowledgeable clarify?
4. sonhouse
Fast and Curious
02 Nov '07 14:341 edit
Originally posted by ilywrin
A proof game is usually a game where you show the moves to obtaining a legal position. But I am unfamiliar with Fischer random chess starting position. Would someone more knowledgeable clarify?
Ok, read a wiki about it so it looks to me like it would have to be Knights out, knights in kind of thing.
1 N(g)-f3 N-f6
2 N g1 N-e8
3 N(e)-f3 N(c)d6
4 N-E1 N-C8
As for the Fischer Random thing, there are 960 legal starting positions, this being just one.
5. 02 Nov '07 14:462 edits
I think I've got it.

The problem asks you to find a valid Fischer Random game ending in this position after 4 moves. Note this isn't a valid Fischer Random starting position - I think white and black have to be set up the same.

So: start from the following position:

Then the game goes:

1. Nd3 Nf6
2. Rc1 Rg8
3. Kd1 Kf8
4. Ne1 Ne8
6. sonhouse
Fast and Curious
02 Nov '07 14:521 edit
Originally posted by mtthw
I think I've got it.

The problem asks you to find a valid Fisher Random game ending in this position after 4 moves. Note this isn't a valid Fisher Random starting position - I think white and black have to be set up the same.

So: start from the following position:

[fen]bqnrkrnb/pppppppp/8/8/8/8/PPPPPPPP/BQNRKRNB[/fen]

Then the game goes:

1. Nd3 Nf6
2. Rc1 Rg8
3. Kd1 Kf8
4. Ne1 Ne8
So you are turning it into a valid random fischer thing?
7. 02 Nov '07 15:00
Originally posted by sonhouse
So you are turning it into a valid random fischer thing?
I'm turning it from a valid Fischer random thing into the given position. I think the difference between this and a usual proof game is that you aren't given the starting position.
8. 03 Nov '07 16:13
Originally posted by mtthw
I think I've got it.

The problem asks you to find a valid Fischer Random game ending in this position after 4 moves. Note this isn't a valid Fischer Random starting position - I think white and black have to be set up the same.

So: start from the following position:

[fen]bqnrkrnb/pppppppp/8/8/8/8/PPPPPPPP/BQNRKRNB[/fen]

Then the game goes:

1. Nd3 Nf6
2. Rc1 Rg8
3. Kd1 Kf8
4. Ne1 Ne8
That is indeed correct ðŸ™‚