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Is this checkmate known?



 
 
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  #1  
Old November 1st 07, 11:53 AM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Andrew Usher
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Posts: 25
Default Is this checkmate known?

This is a common trap in the Guioco Pianissimo opening - I have used
it successfully; of course the first version I used was much longer,
but this is the essential. I give it if black falls victim; white can
also, of course, given that the symmetry of the board.

The first 5 moves are the symmetrical Giuoco Pianissimo. Then 6 B-KN5
O-O? 7 N-Q5 B-K3? - black should have done P-KR3, driving back the
bishop. Other 7th moves are no better, in particular B-KN5 is met by
white's P-KR3 later, moving the bishop back and giving the same
situation. Now the mate goes 8 NxN ch PxN 9 B-KR6 KR-K 10 N-KR4
anything 11 Q-KB3 anything 12 Q-KN3 ch K-KR (forced) 13 Q-KN7 mate.
Or, alternately, if black had played BxB, 13 B-KN7 ch K-KN (forced) 14
N-KB5 anything 15 N-KR6 mate is perhaps more elegant in giving mate
with a knight. Black can avoid this mate only by sacrificing his queen
(several ways).

Black's best move is probably 6 ... P-KR3, the Ruy Lopez defence, to
forestall the whole chain.

Is my analysis correct? Is there any way for black to avoid the
ultimate mate, without losing his queen, after the 7th move here?

Andrew Usher

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  #2  
Old November 1st 07, 12:02 PM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Tony Mountifield
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Posts: 28
Default Is this checkmate known?

In article .com,
Andrew Usher wrote:
This is a common trap in the Guioco Pianissimo opening - I have used
it successfully; of course the first version I used was much longer,
but this is the essential. I give it if black falls victim; white can
also, of course, given that the symmetry of the board.

The first 5 moves are the symmetrical Giuoco Pianissimo. Then 6 B-KN5
O-O? 7 N-Q5 B-K3? - black should have done P-KR3, driving back the
bishop. Other 7th moves are no better, in particular B-KN5 is met by
white's P-KR3 later, moving the bishop back and giving the same
situation. Now the mate goes 8 NxN ch PxN 9 B-KR6 KR-K 10 N-KR4
anything 11 Q-KB3 anything 12 Q-KN3 ch K-KR (forced) 13 Q-KN7 mate.
Or, alternately, if black had played BxB, 13 B-KN7 ch K-KN (forced) 14
N-KB5 anything 15 N-KR6 mate is perhaps more elegant in giving mate
with a knight. Black can avoid this mate only by sacrificing his queen
(several ways).


How about 10...N-K2 and 11...N-N3 ?

Cheers
Tony
--
Tony Mountifield
Work: - http://www.softins.co.uk
Play: - http://tony.mountifield.org
  #3  
Old November 1st 07, 12:15 PM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Andrew Usher
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Posts: 25
Default Is this checkmate known?

On Nov 1, 6:02 am, (Tony Mountifield) wrote:
In article .com,
Andrew Usher wrote:

This is a common trap in the Guioco Pianissimo opening - I have used
it successfully; of course the first version I used was much longer,
but this is the essential. I give it if black falls victim; white can
also, of course, given that the symmetry of the board.


The first 5 moves are the symmetrical Giuoco Pianissimo. Then 6 B-KN5
O-O? 7 N-Q5 B-K3? - black should have done P-KR3, driving back the
bishop. Other 7th moves are no better, in particular B-KN5 is met by
white's P-KR3 later, moving the bishop back and giving the same
situation. Now the mate goes 8 NxN ch PxN 9 B-KR6 KR-K 10 N-KR4
anything 11 Q-KB3 anything 12 Q-KN3 ch K-KR (forced) 13 Q-KN7 mate.
Or, alternately, if black had played BxB, 13 B-KN7 ch K-KN (forced) 14
N-KB5 anything 15 N-KR6 mate is perhaps more elegant in giving mate
with a knight. Black can avoid this mate only by sacrificing his queen
(several ways).


How about 10...N-K2 and 11...N-N3 ?


Ah, you're right. White of course would pin the knight with Q-KN3 but
couldn't
take it as two pawns are defending it.

Still, the mate is a nice trap.

Andrew Usher

  #4  
Old November 1st 07, 12:52 PM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Don Stockbauer
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Posts: 2
Default Is this checkmate known?

Why not concentrate on a real game such as Reality rather than chess,
which is sextillions of times more simple than it.

  #5  
Old November 1st 07, 01:40 PM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
ChessterMolesster@gmail.com
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Posts: 99
Default Canal Variation

The first 5 moves are the symmetrical Giuoco Pianissimo.
Then 6 B-KN5 O-O? 7 N-Q5 B-K3? - black should have done
P-KR3, driving back the bishop. Other 7th moves are no
better, in particular B-KN5 is met by white's P-KR3 later,
moving the bishop back and giving the same situation.
Now the mate goes 8 NxN ch PxN 9 B-KR6 KR-K 10 N-KR4
anything 11 Q-KB3 anything 12 Q-KN3 ch K-KR (forced)


Be careful with those "anything" moves.

10.... N-Q5?! 11.Q-KB3? NxQ ch

10.... K-R1 11.Q-KB3? N-Q5 12.Q-KN3? R-KN1 and Black wins

  #6  
Old November 1st 07, 04:52 PM posted to rec.games.chess.misc
SBD
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Posts: 1,077
Default Canal Variation

Of course the mate is known. I've seen it in hundreds of games.
Concentrating on "traps" is the sure way to be a weak player forever.

  #7  
Old November 1st 07, 11:35 PM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
jkh001@aim.com
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Posts: 718
Default Is this checkmate known?


Tony Mountifield wrote:
In article .com,
Andrew Usher wrote:
This is a common trap in the Guioco Pianissimo opening - I have used
it successfully; of course the first version I used was much longer,
but this is the essential. I give it if black falls victim; white can
also, of course, given that the symmetry of the board.

The first 5 moves are the symmetrical Giuoco Pianissimo. Then 6 B-KN5
O-O? 7 N-Q5 B-K3? - black should have done P-KR3, driving back the
bishop. Other 7th moves are no better, in particular B-KN5 is met by
white's P-KR3 later, moving the bishop back and giving the same
situation. Now the mate goes 8 NxN ch PxN 9 B-KR6 KR-K 10 N-KR4
anything 11 Q-KB3 anything 12 Q-KN3 ch K-KR (forced) 13 Q-KN7 mate.
Or, alternately, if black had played BxB, 13 B-KN7 ch K-KN (forced) 14
N-KB5 anything 15 N-KR6 mate is perhaps more elegant in giving mate
with a knight. Black can avoid this mate only by sacrificing his queen
(several ways).


How about 10...N-K2 and 11...N-N3 ?

Cheers
Tonyy: - http://tony.mountifield.org


Fails to 11. BxB, and if 11. ... PxB 12. Q-N4+ N-N3 12. NxN.

After 10. B-KN5 (the Canal Variation), 10. ... 0-0 has long been know
as a blunder. The old main line 10. ... P-KR3 11. BxN QxB 12. N-Q5
gives White a little advantage. Korchnoi gave up the Giuoco Pianissimo
because of 10 ... N-QR4.

  #8  
Old November 2nd 07, 02:09 AM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Proginoskes
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Posts: 94
Default Is this checkmate known?

On Nov 1, 5:52 am, Don Stockbauer wrote:
Why not concentrate on a real game such as Reality rather than chess,
which is sextillions of times more simple than it.


Really? Where can I download this Reality game from, then?

--- Christopher Heckman

  #9  
Old November 2nd 07, 04:57 AM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Andrew Usher
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Posts: 25
Default Is this checkmate known?

On Nov 1, 5:35 pm, wrote:

How about 10...N-K2 and 11...N-N3 ?


Cheers
Tonyy: -http://tony.mountifield.org


Fails to 11. BxB, and if 11. ... PxB 12. Q-N4+ N-N3 13. NxN.


13. ... Q-Q2 14. N-KR4 dis ch K-KR, and white's attack is stopped but
he's
up a piece. Yes, I did not think last night before accepting Tony's
proposed
defence, I should surely have seen it.

After 6. B-KN5 (the Canal Variation), 6. ... 0-0 has long been known
as a blunder. The old main line 6. ... P-KR3 7. BxN QxB 8. N-Q5
gives White a little advantage. Korchnoi gave up the Giuoco Pianissimo
because of 6. ... N-QR4.


I corrected your move numbers here, careful.

Andrew Usher

  #10  
Old November 2nd 07, 05:14 AM posted to rec.games.chess.misc,rec.games.chess.politics,sci.math
Andrew Usher
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Posts: 25
Default Canal Variation

On Nov 1, 7:40 am, wrote:
The first 5 moves are the symmetrical Giuoco Pianissimo.
Then 6 B-KN5 O-O? 7 N-Q5 B-K3? - black should have done
P-KR3, driving back the bishop. Other 7th moves are no
better, in particular B-KN5 is met by white's P-KR3 later,
moving the bishop back and giving the same situation.
Now the mate goes 8 NxN ch PxN 9 B-KR6 KR-K 10 N-KR4
anything 11 Q-KB3 anything 12 Q-KN3 ch K-KR (forced)


Be careful with those "anything" moves.

10.... N-Q5?! 11.Q-KB3? NxQ ch

10.... K-R1 11.Q-KB3? N-Q5 12.Q-KN3? R-KN1 and Black wins


Obviously my analysis isn't meant to be complete and cover every
possible move, just the useful ones.

10. ... N-Q5 is met by simply taking one more move to bring around
the queen (Q-Q2-K3-KN3).

10. ... K-KR on the other hand does seem good; if then 11. N-KB5 black
must
take it, as it guards the mating square (11. ... BxB 12. Q-KN4 R-KN
13. B-KN7 ch RxB (forced) 14. QxR mate).

Thanks for looking at my analysis but I'd still like to know if
anyone's studied
this specific pattern, perhaps given it a name?

Andrew Usher

 




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