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        riddles >> medium >> Reconstruct the Game (10.0 moves)
        
(Message started by: THUDandBLUNDER on Dec 31^st, 2004, 10:53pm)

Title: Reconstruct the Game (10.0 moves)
Post by THUDandBLUNDER on Dec 31^st, 2004, 10:53pm

Below is the position after Black's 10th move.
Find all the moves played.

Title: Re: Reconstruct the Game (10.0 moves)
Post by Barukh on Jan 1^st, 2005, 1:12am

Hmm, I've seen an hour ago it was after 9 moves?! And the name of the attachment indicates so? :-/

Title: Re: Reconstruct the Game (10.0 moves)
Post by THUDandBLUNDER on Jan 1^st, 2005, 6:17am

on 01/01/05 at 01:12:56, Barukh wrote:

Hmm, I've seen an hour ago it was after 9 moves?! And the name of the attachment indicates so? :-/

Careless typo.

Title: Re: Reconstruct the Game (10.0 moves)
Post by Margit on Jan 1^st, 2005, 7:35am

Hmm, again I seem to be missing a white move.
Sure it's not a 10-and-a-half ?
I don't think there is a problem with the black moves :
[hide]
The black moves maybe are :
P-d5
B-h3 (gets taken by white pawn)
P-g5
P-g4
P-g3
P-g2
PxR=B
B-e4
B-f5
B-c8

White's last 2 moves maybe are :
P-f3
K-f2
That's because the black bishop has to get out to e4.

And here's the problem - we have the 3 known white moves
(the bishop capture and the 2 moves above) leaving an ODD number of moves for white. With all other white pieces on their original squares, I can't see how this is possible.
Hmm
[/hide]

Title: Re: Reconstruct the Game (10.0 moves)
Post by THUDandBLUNDER on Jan 1^st, 2005, 8:09am

Quote:

Sure it's not a 10-and-a-half ?

Yes.

Quote:

we have the 3 known white moves
(the bishop capture and the 2 moves above) leaving an ODD number of moves for white.With all other white pieces on their original squares, I can't see how this is possible.

But this reasoning applies only to knight moves.
(You are nearly there.)

Title: Re: Reconstruct the Game (10.0 moves)
Post by Margit on Jan 6^th, 2005, 12:22pm

This is driving me nuts.
I'm sure that my black moves are ok.
I just cannot get the white bishop out of the way.
(Or if I do, I cannot get it back)
Hmm, maybe someone else has an idea.

Title: Re: Reconstruct the Game (10.0 moves)
Post by THUDandBLUNDER on Jan 6^th, 2005, 2:11pm

on 01/06/05 at 12:22:57, Margit wrote:

I just cannot get the white bishop out of the way.

Out of the way of what?

Title: Re: Reconstruct the Game (10.0 moves)
Post by Barukh on Jan 7^th, 2005, 3:21am

on 01/06/05 at 12:22:57, Margit wrote:

Hmm, maybe someone else has an idea.

Margit, I've got an idea for you: [hide]the white pieces that made an odd number of moves are both pawns, the king and the rook[/hide].