So...need someone for a new position...
Is this position legal?
Sort:
Here's one.
And another one I thought of just now:
Many of you overlook the possibility of promoted food. Arkhimeedes's position is legal.
I'll have a proof game up shortly.
And it is up. The reasoning given about 9 captures apiece needed for the pawns is correct. BUT it is not the case that the edge pawns cannot supply those captures; they can promote and shuffle off to die towards the c-/f-files.
That took a little longer than I thought and is woefully inefficient. But it works.
Great job!
Bravo!
This ought to be published in an article. Wonderful solution. :P
Btw, new puzzle needed.
wow
#47 : first one (14 knights) : of course... where is the difficulty ?
second one : easy too. You just need to feed the white pawns eight times and end up with four rooks.
My turn. Not too hard. Does adding a bishop on c1 change it ?
remellion :
@Remellion:
I salute you!
Hm...interesting one...
COOL
No.
Jan 7, 2014
0
#56
http://www.chess.com/forum/view/more-puzzles/post-your-puzzles?page=2 #34. This one shows that I acually posted the puzzle and the solution 3 weeks ago and it has been solved by others as well for example http://www.chess.com/forum/view/more-puzzles/is-it-possible---or-impossible.(EDIT: I created that forum but nobody seemed to be interessed in it) @Remellion good job. BTW It can be solved in 40 moves but I haven't yet showed it to anyone.
Jan 7, 2014
0
#57
I'm glad that my puzzle finally got the appreciation it deserved. 
. You guys want to see it be done in 40 moves?
@Arkhimeedes: I'll take your word for it that it's possible, but not going to try optimising it myself. Sounds like a fun challenge, but tedious.
@Irontiger: I'm pretty sure it's illegal, with or without the wBc1. Reasoning:
- Obviously bBf8 was captured on f8, h6-bishop must be promoted.
- Only black's h-pawn could've promoted, and needs to make at least 2 captures to dodge the g2/h2 pawns. (Actually 3 captures, since it can't promote on f1 either.
- White is missing 2 pieces. And one of those is the c1-bishop which was captured on c1. Not enough to give to the h-pawn.
Therefore illegal.
Now about this strange position? (A vicious little thing... I hope I didn't make a mistake composing this.)
@Arkhimeedes: I changed my mind. It is illegal, because of the reason put forward by Gyryth. I tried to create a game in which the end position would be created, but I got stuck on the a-pawn of white and the h-pawn of black. They can not be captured by a pawn, because that pawn would move to the outside of the board, when all pawn captures center to a shared file. That requires that none of the pawns can capture to the rim of the board. Hence must the a- and h-pawn get captured by a piece or the kings. But that leaves only 8 captures left for the pawns. That is not enough to create the resulting pawn structure.