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Calling Chess Guru Greenpawn34

Calling Chess Guru Greenpawn34

Only Chess

3 edits

Exuma posted this mate in 6 problem. Since you are the resident Chess Guru, can you solve it?

I got this far with it. So what can Black do to force a checkmate in six moves?

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1.Qg2Ke1
2.Qf2Kd1
3.Qxf1Kc2
4.Nc6a3

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Perhaps this is a better ides:

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1.Qg2Ke1
2.Qf2Kd1
3.Qxf1Kc2
4.exf4

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Or maybe...

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1.Qg2Ke1
2.Qf2Kd1
3.exf4

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As someone mentioned before in the other thread, bring the other knight into game. 1. .... Nc6.

3 edits

Originally posted by Mephisto2
As someone mentioned before in the other thread, bring the other knight into game. 1. .... Nc6.
I considered that, but a3 seems to be an adequate reply

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1.Nc6a3
2.exf4Ra2

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1. ... Nc6 2.a3 Nd4+ really does it. Check it out yourself.


RJ you are the guy with the 2200 grade ( 😕 ) I am only an 1800 player.

For someone who solves SG's difficult set mates without any hassle usually the
first to post a solution I was surprised you were not first in with the solution.

Then I read Exuma's 2nd post.

"Hahahaha. OK this is impossible."

So it would appear it is not a sound mate in 6 and that is why your computer
has failed to find it and you are posting variations all over the place like
a frustrated fish.

Fritz has failed to find it, your next usual step when trolling a post is to cut and
paste something from WIKI but that is no help here, so you do the next bext thing
and wake me up.

So now I have been dragged into this position I suppose I had better
try and sort it out. (me being the RHP Guru and all.) 😉

In the original post we see Exuma has also posted:
"Hint - you must sac the rook. "

Must I? I don't like the word 'must' in problems.
I'm now thinking for there to be a mate in 6 White MUST take the Rook
even if it is not the best move.

So Black is going to make a move and White no matter what Black plays
will take the d3 Rook.

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I saw Nc6 punted so 1...Nc6. 2.Kxd3

Tom Tom said this does work because the King can get away to c2.

But 2...Nxb4+

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The square c2 is covered.

3.Ke2 Qh5+ 4.Ke1 Nd3 mate.

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But that is not mate in 6 I hear you howl.

Yes it is.

You have to try and interpretate what Exuma perhaps means.

The key move is 1....Nc6
Then after that counting both moves it is a mate in 6.

2. Kxd3 Nxb4+ 3. Ke2 Qh5+ 4. Ke1 Nd3 mate.

That is 3 moves for White and three moves for Black (3 + 3 = 6)

Of course it is not correct in pure problem terminology, it should be
Black to play and mate in four, the King must take on d3.

But Exuma is a good lad, I won't hold that against him.

Greenpawn has spoken. Let it be so. 🙂

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Originally posted by greenpawn34
RJ you are the guy with the 2200 grade ( 😕 ) I am only an 1800 player.

For someone who solves SG's difficult set mates without any hassle usually the
first to post a solution I was surprised you were not first in with the solution.

Then I read Exuma's 2nd post.

"Hahahaha. OK this is impossible."

So it would appear it is not a sound mate in ...[text shortened]... a good lad, I won't hold that against him.

Greenpawn has spoken. Let it be so. 🙂
I thought you had your positions wrong because I was thinking "surely it is Nc2#", but then realised there are two solutions to your line.
Good work 🙂

4 edits

Originally posted by greenpawn34
RJ you are the guy with the 2200 grade ( 😕 ) I am only an 1800 player.

For someone who solves SG's difficult set mates without any hassle usually the
first to post a solution I was surprised you were not first in with the solution.

Then I read Exuma's 2nd post.

"Hahahaha. OK this is impossible."

So it would appear it is not a sound mate in a good lad, I won't hold that against him.

Greenpawn has spoken. Let it be so. 🙂
Correction Chess Guru, a problem mate in 6, means you must force a mate in 6 moves, no matter what the reply.

Exuma was only giving a hint to the solution. He wrote, "Hint - You must sac the rook." Well, we did that in our solution on Exuma's thread where Black takes the rook. I did that with out use of a computer program, unlike what you apparently did by using Fritz by you own admission. You told me that I am free to post as long as I keep chess engine analysis out, but apparently that rule does not apply to yourself.

I did not take Exuma's comment in the same manner as you did. I thought he was posting a true mate in 6 problem and that it was so difficult to him that he descrbed it as an impossible problem and not meaning it could not be done.

I got a little help from another poster, but we came up with one solution that was a mate in 6 only if he takes the sacrificed rook. Now I was looking for a solution when he decided not to take. That is the only reason I asked for your help, because I could not find all the other solutions that stood up to all replies by White.

Exuma has not yet said that the solution I posted was correct and if there is more to it or not. He has not said that this is not a true mate in 6 problem. If you are correct, then Exuma was misleading by posting his problem as a mate in 6 without saying that the problem works only if White takes the sacrificed rook. In all other problems that involve the sacrifice of a piece the problems still work if the sacrifice is refused.

Exuma said. "you must sac the rook", which I did. However, that should not mean the opponent must take it.


This was our solution from the other thread if White takes the sacrificed rook.

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1.Qg2Kxd3
2.Qxf1Kxe4
3.f5Kd5
4.Qf3Ke6
5.Qc6Ke7
6.Qd7

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If White replies Kc2 instead of taking the Knight in the above solution, then that variations appears busted, also.

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1.Qg2Kxd3
2.Qxf1Kc2
3.Qxc4Nc3

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3 edits

So is the trick solution that greenpawn34 gives below what you meant?

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1.Nc6Kxd3
2.Nxb4Ke2
3.Qh5Ke1
4.Nd3

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I am making no more efforts on solving this puzzle until I get clarification from Exuma as to what the heck he means. 😏

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Originally posted by greenpawn34
RJ you are the guy with the 2200 grade ( 😕 ) I am only an 1800 player.

For someone who solves SG's difficult set mates without any hassle usually the
first to post a solution I was surprised you were not first in with the solution.

Then I read Exuma's 2nd post.

"Hahahaha. OK this is impossible."

So it would appear it is not a sound mate in ...[text shortened]... a good lad, I won't hold that against him.

Greenpawn has spoken. Let it be so. 🙂
Just to clarify I said that ...Nc6 doesn't work when white has time to play Kc2 before ...Nb4+ and that I would probably play 1...Nc6 without too much calculation because it is easy to see that the rook is taboo. 🙂

Its not a big deal but I think the Kc2 escape is crucial in some variations so I figure it is worth pointing out.

2 edits

Originally posted by tomtom232
Just to clarify I said that ...Nc6 doesn't work when white has time to play Kc2 before ...Nb4+ and that I would probably play 1...Nc6 without too much calculation because it is easy to see that the rook is taboo. 🙂

Its not a big deal but I think the Kc2 escape is crucial in some variations so I figure it is worth pointing out.
I have already shown that after 1...Nc6 2.a3 stops the mate in 6 and it also provides a escape square for the rook in the event of exf4.

So I still prefer the forcing move 1...Qg2 because if White plays like most normal people, he would take the free pieces which leads to a mate. If for some reason he choices to take the rook, but not the knight by retreating his king to c2 then he is goiing to lose his remaining pieces and I would have an easy win without even getting the other knight and rook into the game. The same is true if he immediately retreats his king to e1.

4 edits
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Originally posted by RJHinds
I have already shown that after 1...Nc6 2.a3 stops the mate in 6 and it also provides a escape square for the rook in the event of exf4.

So I still prefer the forcing move 1...Qg2 because if White plays like most normal people, he would take the free pieces which leads to a mate. If for some reason he choices to take the rook, but not the knight by retre ...[text shortened]... ther knight and rook into the game. The same is true if he immediately retreats his king to e1.
Not so, 1...Nc6 2.a3 Nd4+ 3.Kxd3 Nf2+ 4.Kc3 Nd1+ 5.Kd3 e4#

10 edits
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Originally posted by RJHinds
So is the trick solution that greenpawn34 gives below what you meant?

[pgn]
[FEN "rn4k1/ppp2pbp/6p1/4p3/1PP1nP2/3rP3/P2PK3/RN3N1q b - - 0 1"]
1. Nc6 Kxd3 {because your clue means White MUST take the rook sac} 2. Nxb4+ Ke2 3. Qh5+ Ke1 4. Nd3+ {This is checkmate in 6 moves because you are doing some funny counting with 4 moves for Black plus 3 moves for W ...[text shortened]... s on solving this puzzle until I get clarification from Exuma as to what the heck he means. 😏
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1.Nc6a3
2.Nd4Kxd3
3.Nf2Kc3
4.Nd1Kd3
5.e4

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1.Nc6a3
2.Nd4exd4
3.Qf3Ke1
4.Nf2Nc3
5.Rxd2Nxd2
6.Nd3

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SOLV'D

1 edit
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Originally posted by tomtom232
[pgn]
[FEN "rn4k1/ppp2pbp/6p1/4p3/1PP1nP2/3rP3/P2PK3/RN3N1q b - - 0 1"]
1. Nc6 a3 2. Nd4+ Kxd3 3. Nf2+ Kc3 4. Nd1+ Kd3 5. e4#[/pgn]

[pgn]
[FEN "rn4k1/ppp2pbp/6p1/4p3/1PP1nP2/3rP3/P2PK3/RN3N1q b - - 0 1"]
1. Nc6 a3 2. Nd4+ exd4 3. Qf3+ Ke1 4. Nf2 Nc3 5. Rxd2 Nxd2 6. Nd3[/pgn]


SOLV'D
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1.Nc6a3
2.Nd4exd4
3.Qf3Ke1
4.Nf2Nh2

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