Only Chess
04 Mar 07
05 Mar 07
Originally posted by ShinidokiThe B must be the colour of he queening square. If it is not and the defending king gets in front of the pawn then the a or h pawn cannot queen and the game will be drawn.
In bishop+ wingpawn endgames what colour must the bishop be?
I ask because, during the game, i thought that becuase h1 was a white square, I need to trade the rook for the white-squred bishop for the draw, and trading for the black squared would lose.
if this is true, then my h-pawn is lost, because the black-squared B will take it, im not sure chasing the white B around the entire board would work ethier.
05 Mar 07
Originally posted by Dragon Firecould you have managed to go through with the forced win if he had held on to the rook?
Anyone gone on this long and still won?
My longest won game is Game 2476497 at 77 moves.
i can't do it...
but it is a forced win...
even so,
a GM once held on to the draw by 50 moves in a game...
05 Mar 07
1 edit
Originally posted by rubberjaw30As you can see I was having difficulty. Whilst K & Q vs K & R should be a win for the queen this game shows how difficult it can be if the defending side plays accurately. As the game shows, however, it just takes one small mistake by the defending side.
could you have managed to go through with the forced win if he had held on to the rook?
i can't do it...
but it is a forced win...
even so,
a GM once held on to the draw by 50 moves in a game...
I have and end game book by Averbach on exactly this ending and was trying to follow that and felt I had finally achieved a position in it that allowed the forced win.
Edit: Unless you use a tablebase most (all?) engines fritter around aimlessly here and cannot win.
05 Mar 07
Originally posted by ShinidokiSo soooory! I have gone colour blind. So your plan would be to swop your rook for the white B, leaving him with the Rooks pawn, which you also need to get your king in front of.
so how can whites h-pawn be defended without losing then?
Looking at your game again I see you were indeed trying to do exactly that.
05 Mar 07
1 edit
Originally posted by Dragon FireHere is an example of a Game 2983433 where I succeeded in doing exactly that.
So soooory! I have gone colour blind. So your plan would be to swop your rook for the white B, leaving him with the Rooks pawn, which you also need to get your king in front of.
Looking at your game again I see you were indeed trying to do exactly that.
Recognising that I did not even need to win the h pawn and that the 2 central pawns would be good enough I played 45. e5 giving up all my remaining pawns for his 2 central pawns. Although I also won the h pawn this was unnecessary as my king could get safely to h1 securing the draw.
If I had not played this move (which I had worked towards for a few moves) I believe my pawn chain would have collapsed and his central pawns would have won. I believe 45. e5 is a certain draw.
Incidently Fritz does not even rate this move and considers the position overwhelmingly won for black (more so after e5). There are also too many pieces at this stage to be in a tablebase.
05 Mar 07
Originally posted by Dragon FireMate in 85. Game 1604497
Anyone gone on this long and still won?
My longest won game is Game 2476497 at 77 moves.
Mate in 77. Game 1686839
05 Mar 07
Originally posted by techsouthNice one, underpromoting to a Rook but 85. h1=N would have been even more fun.
Mate in 85. Game 1604497
86. fXe ... Ng3;
87. e7 ... Ne2#
