Originally posted by JusuhNo way can black win with 2 black Bs so he just leaves them where they are, white cannot pust the pawn and its a very simple draw.
[fen]8/8/8/3K4/1b6/1Pb5/8/7k w - - 0 11[/fen]
imagine this is 5min blitz game, and white runs out of time in this position.
Is it draw or black's win? and why?
Only an engine would try and win this - a dead give away.
It should be a draw because black doesn't have enough material to checkmate since both bishops are darksquared but if this would be played on a chess server I think the program would award black a win since it's probable that it won't look at the kind of bishop but only at the fact that there are two bishops.
Originally posted by JusuhSurely you know the answer yourself.
[fen]8/8/8/3K4/1b6/1Pb5/8/7k w - - 0 11[/fen]
imagine this is 5min blitz game, and white runs out of time in this position.
Is it draw or black's win? and why?
In blitz the outcome is now determined if White can , theoretically, get checkmated. Since tha pawn can promote to a knight this is still possible, for example:
w Kh8
w Ng8
bKg6
bBg7
bBb8
1 edit
Originally posted by Fat Ladywhite ran out of time! the game is over! but should it be declared draw or black's win?
Assuming you haven't made a mistake with the position, this is very clearly a draw. White just runs to a white squared corner and stays there, waiting for stalemate or the fifty move rule.
Originally posted by jfkjmhouch! I missed that. I always thought that K+B vs. K+N is a forced draw (K+B can not deliver checkmate) Thanks for pointing that out.
Surely you know the answer yourself.
In blitz the outcome is now determined if White can , theoretically, get checkmated. Since tha pawn can promote to a knight this is still possible, for example:
w Kh8
w Ng8
bKg6
bBg7
bBb8
I thought only way for black to mate (theoretically) was to let white promote his pawn to light-squared bishop by saccing his other bishop so that promotion square would be light. but your solution ruins the whole problem.
2 edits
Originally posted by JusuhSilly me. I just thought you'd made a mistake with the FEN
white ran out of time! the game is over! but should it be declared draw or black's win?
It is a win for black as (with pretty bad play) a mate can exist.
The location of the 2nd black B does not matter. In my opinion, this game would be a win for black even if there was only a single B.
The last 2 moves are N(h6)g8?? .. B(f8)g7#
2 edits
Sorry, I misunderstood the question. I have no idea whether Black can claim a win because it is possible for White to promote to a knight and then maneuver himself into a mating postion.
Edit. Ok, I checked the FIDE site (http://www.fide.com/official/handbook.asp?level=EE101) and it says the following:
6.10
Except where Articles 5.1 or one of the Articles 5.2 (a), (b) and (c) apply, if a player does not complete the prescribed number of moves in the allotted time, the game is lost by the player. However, the game is drawn, if the position is such that the opponent cannot checkmate the player`s king by any possible series of legal moves, even with the most unskilled counterplay.
From this it seems pretty clear that Black wins in the situation you describe because White can, with particularly unskilled counterplay, contrive to get himself checkmated.
This question and answer session from Geurt Gijssen is illuminating as well: http://www.chesscafe.com/text/geurt11.txt
Originally posted by Fat LadyIn blitz a win just has to be theoretically possible. In longplay it has to be possible to win 'by normal means', a rule which has caused a fair few arguments in my local league where arbiters are not present at matches.
Sorry, I misunderstood the question. I have no idea whether Black can claim a win because it is possible for White to promote to a knight and then maneuver himself into a mating postion.