15 Nov 07
Originally posted by rubberjaw30There is more than one winning move!(not for the first move but later in the problem) you have to find them all otherwise you will not mate in 11 which is what the I asked you to do I didn't ask you to find the first move to a mate in 11.
i puzzles, the solver only needs to find the winning move for the color to move. we needn't go any further.
I just thought about making a puzzle thread with our game in it and saying White to move and Draw... just to see how long it would take you to figure out it was our game...
then I figured you'd call foul play, and bring i the mods, and claim your little win, etc.
15 Nov 07
Originally posted by tomtom232Where did yo get the mate in 11 problem? Do you have any with mate in 25?
There is more than one winning move!(not for the first move but later in the problem) you have to find them all otherwise you will not mate in 11 which is what the I asked you to do I didn't ask you to find the first move to a mate in 11.
15 Nov 07
Originally posted by tomtom232I'm assuming that you checked your answer with a chess engine? If so, did you use a brute-force search? Only a brute-force search guarantees that your engine hasn't overlooked some part of the answer. (Brute-force searches take much longer than other selective search methods.)
You don't have to solve it if you don't want to but resigning isn't a solution to the problem as the stipulation clearly states that it is white to move and mate in 11.
BTW: Blacks best defense is [b]not Bxd3.[/b]
16 Nov 07
For the black defense, what about Be4?
Don't forget guys that the Root can occupy this e4 position too as it is supported by the pawn.
But I can't tell if for now, this is the B or the R that have to go to e4. I presume the bishop as it is a minor piece instead of the Root, but don't have more time to worj on it as I am at work :shame:
:p
16 Nov 07
1 edit
Originally posted by tomtom232You might want to recheck your answer concerning your statement about Black's best defense not being Bxd3.
You don't have to solve it if you don't want to but resigning isn't a solution to the problem as the stipulation clearly states that it is white to move and mate in 11.
BTW: Blacks best defense is [b]not Bxd3.[/b]
I'll assume that your 1.Bd3 is correct, as it would take me too long to verify the problem from the very beginning with a brute force search. However, given that we start with 1.Bd3, then 1...Bxd3 does indeed produce a mate in 11. (That is, mate in 10 after 1.Bd3 Bxd3.) Maybe there's more than one correct variation after White's first move? I didn't try to find any other correct responses by Black; I just checked to see if 1.Bd3 Bxd3 works.
P.S. Maybe redemption is a little harder to achieve than you thought? 😉
17 Nov 07
Originally posted by The Dude 84I'm not sure, but I'd guess that after White's Qg4+, Black's Qg5 complicates the situation.
My line is real different than anybody's so maybe I'm missing something, but why not Rook takes bishop at h7 check, king takes rook, bishopd3 check, kg8, qg4check, kf8, queen g7 mate??
17 Nov 07
Originally posted by Mad RookYou are right but if you checked with a computere it doesn't tell which mate is easier to find. With Bxd3 the mate comes easy. The best defense makes it so that white has to come up with great moves almost every move.
You might want to recheck your answer concerning your statement about Black's best defense not being Bxd3.
I'll assume that your 1.Bd3 is correct, as it would take me too long to verify the problem from the very beginning with a brute force search. However, given that we start with 1.Bd3, then 1...Bxd3 does indeed produce a mate in 11. (That is, mate in ...[text shortened]... Bd3 Bxd3 works.
P.S. Maybe redemption is a little harder to achieve than you thought? 😉
17 Nov 07
Originally posted by tomtom232Well, OK, so when you said " Blacks best defense is not Bxd3", you really meant the quality of the moves and not the number of moves to mate. However, that was not a very precise way of stating what you meant. I think most people (me included) would have interpreted your statement to mean that Black's Bxd3 move was not sufficient to hold out for mate in 11.
You are right but if you checked with a computere it doesn't tell which mate is easier to find. With Bxd3 the mate comes easy. The best defense makes it so that white has to come up with great moves almost every move.
I'll bet if you asked zzyw how he interpreted your statement, he'd agree with my interpretation.
17 Nov 07
Originally posted by Mad Rookyou are right about that too. I was trying to be sorta cryptic but it didn't really work out.
Well, OK, so when you said " Blacks best defense is not Bxd3", you really meant the quality of the moves and not the number of moves to mate. However, that was not a very precise way of stating what you meant. I think most people (me included) would have interpreted your statement to mean that Black's Bxd3 move was not sufficient to hold out for mate in 11. ...[text shortened]... bet if you asked zzyw how he interpreted your statement, he'd agree with my interpretation.