|
< Earlier Kibitzing · PAGE 5 OF 7 ·
Later Kibitzing> |
| May-23-12 | | mohannagappan: 83.Nd3 Ka1 84.Nc1 a2 85.Nb3# i have seen this puzzle earlier in chess books |
 |
| May-23-12 | | jffun1958: A Zugzwang puzzle.
83. Nd3 Ka1
84. Nc1 a2
85. Nb3# |
|
May-23-12
 | | Moonwalker: <Caissas Clown: Hmmmm..Like some(Or many ? Come on , tell the truth!) , I thought this was very easy as a "white to play and draw". .....> Yup! I took the draw! Guess I forgot that King and Knight can indeed mate as long as there's at least one enemy pawn left.. Never saw this pattern before but I'm sure I'll recognise it going forward. Happy I learned something new :-) |
|
| May-23-12 | | bachbeet: Didn't get it. Never thought I'd see a game where one could win with only a knight and the king. |
|
May-23-12
 | | rhickma4: If you envisage the end position, this is not too hard. 83.Nd3 Ka1 84.Nc1 a2 85.Nb3# |
|
| May-23-12 | | Lambda: Instead of spotting some unexpected sacrifice, today is a matter of simple logic. The knight needs a spot where it can prevent the king from coming to a2, forcing the black pawn to advance and trap the king, whilst being ready to give check next move, the available square being b3. Hence it needs to come to c1. |
|
May-23-12
 | | morfishine: A neat three mover: <1.Nd3 Ka1 2.Nc1 (Now Black has only one-move)...a2 3.Nb3 mate> One of those funny things about chess: mate cannot be forced with K + N vs K...but give the lone King a pawn, and mate becomes possible |
|
| May-23-12 | | dumbgai: I went 83. Nb3! :D |
|
| May-23-12 | | TheaN: Wednesday 23 May 2012
<83.?>
Material: White,  vs  endgame
Candidates: <[Nd3]>
A somewhat famous position, bringing about the only potential setup where a knight defeats a pawn, the opposite being more common in combinatory chess but the material ending is usually a draw. Here, White has the Black king merciless on the a-file, forcing him to move down the a-pawn where he doesn't want to. After: <83.Nd3 Ka1 84.Nc1> this forces a2, and by this time White should also have its scope on b3. By playing Nb4? Black draws by just making a move, as either White move after a2 leads to a draw by stalemate or insufficient material. <84....a2 85.Nb3‡ 1-0> and voila. |
|
May-23-12
 | | King Sacrificer: Luckily, i have checked this game last week. The worst thing about this game is Gongora resigning at move 84. It shows he was not aware of what's goin' on until the end. |
|
May-23-12
 | | whiteshark: “I'm simply saying that there is a way to be sane. I'm saying that you can
get rid of all this insanity created by the past in you. <Just by being a simple witness of your thought processes.> It is simply sitting silently, witnessing the thoughts, passing before you.
Just witnessing, not interfering not even judging, because the moment you
judge you have lost the pure witness. The moment you say “this is good, this
is bad,” you have already jumped onto the thought process. It takes a little time to create a gap between the witness and the mind. Once
the gap is there, you are in for a great suprise, that you are not the mind, that
you are the witness, A watcher.
And this process of watching is the very alchemy of real religion. Because as
you become more and more deeply rooted in witnessing, thoughts start
disappearing. You are, but the mind is utterly empty. <That’s the moment of enlightenment.> That is the moment that you become for
the first time an unconditioned, sane, really free human being.” -Osho |
|
May-23-12
 | | Once: This is a puzzle that lends itself to retrograde analysis. White wins if he can get to here:
click for larger viewBlack draws if he can keep shuttling his king between a1 and a2 or if he can get to his King to a1 and his pawn to a2 without white being able to give a knight check: eg 83. Na4? Ka1 84. Nc3 a2
click for larger viewDrawn - unless white wants to commit suicide.
So in order to win, white needs to force Ka1/a2 and be in a position to land Nb3# immediately afterwards. The only way to force a2 is to cover it with the knight (otherwise black will just play Ka2). So white needs to park his knight on a square which is a knight move away from a2 and b3. There is only one square on the board which is a knight move away from a2 and b3 - c1. Now all that is left to do is to plot a route to c1. The immediate 83. Nb3 is an insta-stalemate, so that just leaves Nd3-Nc1-Nb3# I think we can leave it to Lestrade to deal with the paperwork. If we rush we can catch the 11.15 to Paddington and be back at Baker Street in time for lunch. |
|
| May-23-12 | | jps: 43. Nd5 being better than promoting makes my head hurt a little. |
|
| May-23-12 | | LoveThatJoker: 83. Nd3! Ka1 84. Nc1! a2 85. Nb3#
LTJ |
|
May-23-12
 | | sevenseaman: <Once> <Retrograde analysis>! Lucid thoughts, neatly put. I was hoping that somehow you would deal with the alternative template too; 
click for larger viewIt is an equally good solution but I failed to find the cerebral wherewithal to fill this template with appropriate moves. I tried but being w/o an engine I did not find adequate resourcefulness/ingenuity. I do not know if tablebases have an answer. You think you could do it? It would be quite a creation. Or it must remain a wild fancy, in this scenario at least. |
|
| May-23-12 | | dragon player: This pattern is not uncommon. You can't mate with only
a knight, but if the enemy king is trapped by his own
pawn, the matters are different. This is the way to mate: 83.Nd3 Ka1
84.Nc1! a2
85.Nb3#
It's all forced, but not so easy to notice.
Time to check.
------------
Indeed, a pity black resigned one move before the mate. 3/3 |
|
May-23-12
 | | Richard Taylor: < VincentL: I had five minutes to look at this, and didn't solve it > But at least you made the effort. Next time you see such positions you will or might see the solution. Remember that GMs (and others) etc study thousands of problems, mates and position types. (Soltis describes this method of study (combinations and positional ideas) in "Studying chess made easy" by Andrew Soltis. ) But you have to have a lot of time! |
|
| May-23-12 | | zb2cr: After a moment wasted thing about 84. Na4, I hit on the proper procedure: 84. Nd3, Ka1; 85, Nc1 and Black is in zugswang. |
|
May-23-12
| | Once: <sevenseaman> I may be wrong, but I don't think that your position can be forced. If we want to end up here ...
click for larger viewThen the move before this must have been for white to play Nb3#. That means that the knight must have been on a5, c5, d4 or d2. Rewinding one more move, we find that black must have played a3-a2. It's his only legal move. So we have four positions to consider. Here's the first: 
click for larger viewIt's black to play. In order to get to our desired position, he has to play 1... a2 2. Nb3# But what is to stop him from playing 1... Ka2? Then I don't see how white makes progres. It's the same with the other three potential starting squares for the knight. Black can't be forced into 1... a2 unless the white knight controls the a2 square to prevent Ka2. And that brings us back to the need for the white knight to sit on c1 before delivering the mate. |
|
| May-23-12 | | kurtrichards: ...the Nogueiras way > N-d3-c1-b3... |
|
May-23-12
 | | JohnBoy: <LTJ> - a little heavy handed with the "!" notation... |
|
May-23-12
| | sevenseaman: Thanks <Once> for sportingly trying. That settles it. Like an eternal optimist I was vaguely hoping for some wizardry or alchemy. |
|
| May-23-12 | | YGraupera: Retrograde analysis is the best way to solution. I've never seen this before in real play. |
|
| May-23-12 | | guiyaumed: And if 81. ... ; Ka1 and 82. ... ; Kxa2, the blacks can draw.
correct ? |
|
| May-23-12 | | Nostrils: I wonder at what point is black actually lost?
Clearly, from what follows, taking the a2 pawn is suicidal, but the pawn was taken voluntarily. Does black have some other choice?
Is it the case that in the puzzle position with black to play it is a draw?
If so could black have triangulated before taking the pawn? Maybe 80 ... kb1.
(I am better at questions than answers) |
|
|
|
< Earlier Kibitzing · PAGE 5 OF 7 ·
Later Kibitzing> |
