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| Mar-27-10 | | zb2cr: Cross-pin again! 9. Bg5+; Bf6 (forced); 10. Qxg7. See helpful explanatory comments by <OBIT>, <dzechiel>, <ChocolateCakeLover>, <TheBish>, <scormus>, <lost in space>, and <njchess>. |
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| Mar-27-10 | | badlooser: it was very easy: something like Monday-Wednesday puzzle level, but very nice!! |
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| Mar-27-10 | | Goldenraf: really easy, I would say Tuesday LOL |
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| Mar-27-10 | | znsprdx: <whiteshark: a nice two mover, Tuesday/Wednesday level.> pretty though...given that moves like Nc3 look pretty tempting and arguably after
9. Bg5+ Bf6 10. Qxg7 it still takes a while to finish the game since weak players never know when to resign :) e.g. 10..Bd7 11. Qx[R]h8+ Ke7 12. Qg7+ [repeats pin theme] Kd6 13.Bx[B]f6 Qx[B]c4 14. Qe7+ Kc6 15.
Nd2 Qd5 16. c4 Qd3 17.. Nb3 Bg4 ( an actual mate threat!!) 18. Nd4+ Kb6 19. Qb4+ Ka6 20. Qb5# What might be fun here is to determine if anyone can find a faster mate with reasonably logical play by Black |
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| Mar-27-10 | | David2009: Saturday's puzzle W Schelfhout vs NN, 1910 White 9? Is this really Saturday? 9 Bg5+ Bf6 forced 10 Qxg7 and it is all over (cross-pin).
Check:
=====
Indeed. Bad week for NN, bad week for www.chessgames.com? |
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Mar-27-10
 | | agb2002: The material is even. Black threatens 9... gxh6 and 9... Qxb2. Like in other puzzles this week, there are two lines of interest: d8-h4, because Bg5+ would be mate if f6 were not defended by Black's queen and DSB bishop, which lie on the other line, a1-h8. They suggest another cross pin after 9.Bg5+ Bf6 10.Qxg7: A) 10... Nd7 11.Qxh8+ Ke7 12.Bxf6+ Nxf6 13.Qg7+ Kd8 14.Nd2 e3 15.0-0-0 + - [R+P]. B) 10... Bxg5 11.Qxd4+ and 12.Qxh8 is a massacre.
C) 10... Qxc4 11.Bxf6+ Ke8 12.Qe7#. |
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| Mar-27-10 | | tarek1: What I saw here is
<9.Bg5+ Bf6 10.Qxg7> with a cross pin. <10...Nd7>
if <10...Bxg5> then <11.Qxd4+>
if <10...Ke8> unpinning then <11.Bxf6> <11.Qxh8+ 11...Ke7 12.Qg7 Kd6 13.Bxf6>
I didn't even bother analyzing this, it's just a slaughter. Also, besides this specific tactic of the cross pin, white also have the strong move : <9.Nc3>
and Rd1 next is inevitable with deadly consequences.
I don't see why the puzzle qualified a very difficult, I must have missed something. |
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| Mar-27-10 | | Patriot: Very easy for a Saturday puzzle. This seems more like Monday style. |
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| Mar-27-10 | | lekoo: very difficult??? my balls!!
By writting this, is conffuse the reader!! |
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| Mar-27-10 | | johnlspouge: Saturday (Very Difficult)
W Schelfhout vs NN, 1910 (22.?) White to play and win.
Material: Even. The Black Kd8 is stalemated and vulnerable to checks from Qf7 and to 9.Bg5+. The Black Qd4 and Kd8 are both on the d-file, suggesting a possible pin with Rf1-d1 after White castles. The White Ke1 is vulnerable to several pointless checks from Qd4. The White Bc4 interferes with Qd4-b4+ and is an important defensive piece, because it controls light squares near Ke1. Candidates (22.): Bg5+
22.Bg5+ Bf6 23.Qxg7
(cross-pinning and threatening 24.Bxf6+ or 24.Qxh8+)
(1) 23…Qxc4 24.Bxf6+ Ke8 25.Qe7#
(2) 23…Bxg5 24.Qxd4+ wins (at least) Q for B
(3) 23…Nd7 24.Qxh8+ Ke7 25.Qg7+ Kd8 [or Kd6 or Ke8]
[Ke8 26.Bf7+ is no better]
White has the option of cashing out his winnings with 26.O-O, when Black cannot regain more than 2P for his R. |
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| Mar-27-10 | | Eduardo Leon: 9.♗g5+ ♗f6 10.♕xg7, using the pin against the bishop to create a triple attack against the bishop, rook and queen (indirectly), ends the game. |
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| Mar-27-10 | | Eduardo Leon: I meant... using the double pin against the king and queen. |
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Mar-27-10
 | | thegoodanarchist: Pin and cross pin! Very aesthetically pleasing. |
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Mar-27-10
 | | kevin86: This MUST be the week of the double pin-at least Three times in six days! |
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Mar-27-10
 | | Willber G: Well being a Saturday I went straight for the 'difficult' option of Nc3 followed by Rd1, and white ends up winning the exchange and and pawns after piling pressure on the defender at d7. |
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| Mar-27-10 | | eblunt: Bg5+ sets up the cross pin, after Qxg7.
Seems CG is get easier at the same rate as <Srikankanmaster's> trolling is getting worse. He desperately needs some new material. |
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| Mar-27-10 | | Deji: Beautiful. Malta cross. Black Queen cannot take white bishop because of 1) Bxf6+ Ke8 2)Qe7#. The Bishop is double-pinned and the rook is hanging! I love this position! |
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| Mar-27-10 | | James Bowman: Very nice walked right past the beautiful tactic that was screaming look for me I'm open. White had a lot of good continuations and black was looking rather hosed. |
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| Mar-27-10 | | AnotherNN: This is difficult?! I think they got Paula Abdul to set the puzzles this week. |
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| Mar-27-10 | | gofer: Just going out, so no time to post a long drawn out explanation of why I have chosen... 9 Nc3 ...
But lets say that the imminent threat of Rd1 pinning the queen is enough to cause black
serious problems. So...
9 ... gxh6 loses the queen for R + B and then white is very active and black is totally
defensive
9 ... Qxc3+ 10 bxc3 Bxc3+ 11 Ke2 and now both gxh6 and Bxa1 both lose 9 ... Bd7 10 Rd1 Qb6 (Qc5 allows Nxe4) 11 Nd5 winning 9 ... Nd7 10 Rd1 Qb6 (Qc5 allows Nxe4) 11 Bg5+ winning Time to check... |
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| Mar-27-10 | | gofer: Ouch! I saw this combination in one of the lines I was looking at, but never realised it could be played immediately!!! A big fat zero today! :-( |
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| Mar-27-10 | | DarthStapler: I didn't get it |
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| Mar-27-10 | | wals: Rybka 3 1-cpu: 3071mb hash: depth 14:
NN played my sort of game .
2...d5 +0.54, best was Nf6 +0.17 or Nc6 +0.21.
3...dxe4 +0.52, better was Bd6 +0.35.
7...Qxd4 +13.35, best was 0.0 +1.66
or Qe7 +1.77 |
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| Mar-27-10 | | brucealexander: Not a fair contest. NN has been playing chess since 1497. He's probably over the hill. |
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| Nov-06-15 | | Mating Net: A textbook example of the rarest of pins, the cross pin. The poor Bishop f6 is in an absolute pin by the Bishop g5, and to make matters worse, it is also relatively pinned by the Queen on g7. |
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