urk wrote:
I said forced draw, not draw by agreement.
Hmmmm, lose the C pawn, put the K on B1 then bxA4 QxA4 stalemate, but it's not forced as the bishops can move beforehand and leave an escape square.
A chess problem that computers can't solve.
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Mar 15, 2017
0
#24
What? Human brains think differently? I thought we calculated millions of position per second, considering every legal first move, and strictly applied evaluation functions to render a numerical evaluation. I'm so glad someone made a puzzle to show that we think differently /sarcasm
Mar 15, 2017
0
#25
krudsparov wrote:
urk wrote:
I said forced draw, not draw by agreement.
Hmmmm, lose the C pawn, put the K on B1 then bxA4 QxA4 stalemate, but it's not forced as the bishops can move beforehand and leave an escape square.
and Qxa4 is not forced either....
bbeltkyle89 wrote:
krudsparov wrote:
urk wrote:
I said forced draw, not draw by agreement.
Hmmmm, lose the C pawn, put the K on B1 then bxA4 QxA4 stalemate, but it's not forced as the bishops can move beforehand and leave an escape square.
and Qxa4 is not forced either....
Yeah I was thinking the Q must take, otherwise PxR# but of course the C pawn's gone and the K can escape to B7 
Mar 15, 2017
0
#27
krudsparov wrote:
bbeltkyle89 wrote:
krudsparov wrote:
urk wrote:
I said forced draw, not draw by agreement.
Hmmmm, lose the C pawn, put the K on B1 then bxA4 QxA4 stalemate, but it's not forced as the bishops can move beforehand and leave an escape square.
and Qxa4 is not forced either....
Yeah I was thinking the Q must take, otherwise PxR# but of course the C pawn's gone and the K can escape to B7
or, even if the c pawn wasnt gone the Q can take on b5...
There is a draw is under the 50 move rule: https://en.wikipedia.org/wiki/Fifty-move_rule
White must move only the king, stick to white squares and not capture.
White can win only if black ever leaves C7 undefended. Then white wins in 2 with a queen on C8.
Are there any other solutions?
bbeltkyle89 wrote:
krudsparov wrote:
bbeltkyle89 wrote:
krudsparov wrote:
urk wrote:
I said forced draw, not draw by agreement.
Hmmmm, lose the C pawn, put the K on B1 then bxA4 QxA4 stalemate, but it's not forced as the bishops can move beforehand and leave an escape square.
and Qxa4 is not forced either....
Yeah I was thinking the Q must take, otherwise PxR# but of course the C pawn's gone and the K can escape to B7
or, even if the c pawn wasnt gone the Q can take on b5...
Yeah I also thought Kc8 then c7 Bxc7 cxb5 then Qxc5 stalemate but the K can take instead and white's stuffed, I can't see a quicker draw the 50 moves ( yet )
krudsparov wrote: I said forced draw, not draw by agreement.
Hmmmm, lose the C pawn, put the K on B1 then bxA4 QxA4 stalemate, but it's not forced as the bishops can move beforehand and leave an escape square and Qxa4 is not forced either....Yeah I was thinking the Q must take, otherwise PxR# but of course the C pawn's gone and the K can escape to B7 or, even if the c pawn wasnt gone the Q can take on b5... Yeah I also thought Kc8 then c7 Bxc7 cxb5 then Qxc5 stalemate but the K can take instead and white's stuffed, I can't see a quicker draw the 50 moves ( yet )
I am also at 50 moves on my board and cant see a quicker draw either, nor can I see a viable win for white.
Mar 15, 2017
0
#31
50 move rule is not a draw by agreement. So that's forced I guess (?)
But I don't see a forced stalemate if that's what we're looking for.
Mar 15, 2017
0
#32
Krudsparov, you busted my solution!
"Yeah, I also thought Kc8 then c7 Bxc7 cxb5+ then Qxb5 stalemate but the K can take instead and white's stuffed."
Damn, of course!
Apologies
"Yeah, I also thought Kc8 then c7 Bxc7 cxb5+ then Qxb5 stalemate but the K can take instead and white's stuffed."
Damn, of course!
Apologies
GRIDLOCKJK
There's an article which says white can win if it tricks black into a blunder???????? What?? Well duh.
Krudsparov, who said that?
Mar 15, 2017
0
#35
GRIDLOCKJK wrote:
I am also at 50 moves on my board and cant see a quicker draw either, nor can I see a viable win for white.
Dude. Seriously? Troll. Trust me bro, white can win. If you are not trolling AND you do not trust me, play the following moves on your board from the puzzle position. 1. c7 Bf6 2. c8=B# or how about 1. c7 Bg5 2. c8=Q# . The win for white is not forced, but it is viable.
vi·a·ble
ˈvīəb(ə)l/
adjective
-
capable of working successfully; feasible.
First off I wasn't trolling you Jwild and my apologies if it seemed like my post was a challenge. I was commenting on what I came up with on my board at the time. When I get home I will check out your solution to this chess puzzle.
Mar 15, 2017
0
#37
But is it a legal position ? Is it possible to play to it in a "normal" game of chess ?
Anyway, it is quite clever done by Penrose!
Mar 15, 2017
0
#38
How do we know it's clever if we don't know the solution?
Is it just shuffling around until Black offers up free bishops to avoid the 50 move limit?
Is that the clever solution?
Wtf?
Is it just shuffling around until Black offers up free bishops to avoid the 50 move limit?
Is that the clever solution?
Wtf?
taque wrote:
This position can only be achievable if you think upside down. White is only 1 move away to have a queen.
Just because you turn the board upside down doesn't mean the coordinates would change. White isn't one move away from promoting. And even if you switched the coordinates, it's no longer the same position then.
This is still fascinating to me. Edited jan 20, 2018