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|Oct-13-08|| ||abstraction: <Puffen: Why didn't black play Nxg3 on move 20. ?> 21. fxg3 gives white immense advantage with the open f-file against the now weakened King position, eg., three pieces now bear down on f7 (and note 21. ... gxh6? leads to a mate in four beginning with 22. Rxf7.)|
|Oct-13-08|| ||TheaN: 1/1
Mate seems plausible, and I actually thought that 26.Nf6 combined with Qh4 would go there, but 26.Nf6 Qxf6 leaves White stumped with a piece up but Queens OTB.
White: a3, d4, f2, g2, h2, Ng4, Bh6, Rf1, Qe4, Kg1
Black: a7, b5, d5, f7, g6, Rc3, Re8, Qd8, Kg8
Material: + ♗♘ vs ♖
Candidates: Nf6, <[Qxe8]>
<26.Qxe8> and a fork is forced here, as Black cannot decline this sacrifice effectively.
<26....Kh7 27.Qxd8 Rc1 28.Qf8 Rxf1 29.Kxf1 f5 30.Qg7 1-0>
<26....Qxe8 27.Nf6 Kh8 28.Nxe8 > and White, instead of playing N+B+R vs R+R suddenly plays N+B+R vs R. More than enough, I guess, even after Rxa3.
|Oct-13-08|| ||chrisowen: Isnt it great saccing the queen. Re8 looks like the mistake allowing Rg3 and kingside play!|
|Oct-13-08|| ||outplayer: I think that black could play 20...Nxg3.|
|Oct-13-08|| ||ThePawnOTron2: This was really a "very easy" puzzle, indeed! 26.Qxe8+ [decoys the queen to e8, removes defender of f6-square] for a knight fork at f6.|
|Oct-13-08|| ||ThePawnOTron2: ed gantro, the last difficult was Gelfand vs Salov, 1996 25.?|
|Oct-13-08|| ||agb2002: Too many holes around the black king.
A) 26.Nf6+ Qxf6 27.Qxe8+ Kh7 28.Be3 Rxa3 29.Qxb4 and black does not have any compensation for the bishop.
Ignoring DAUT (Dont Analyse Unnecessary Tactics):
B) 26.Qxe8+ Qxe8 27.Nf6+ Kh8 28.Nxe8 Rxa3 29.Nf6 Ra6 (otherwise Rc1 or Re1 threatening mate) 30.Nxd5 and black ends up worse than in line A).
Id go for line B). Time to post, check and complete my Saturday & Sunday analyses (if my family allows me...).
|Oct-13-08|| ||Patriot: Two candidates immediately stood out: 26.Qxe8+ and 26.Nf6+.|
26.Qxe8+ clearly seemed better because it wins a piece for nothing.
26.Nf6+ only wins the exchange. This is true regardless of what is remaining on the board. This also leaves black with the queen and a better chance for counterplay. So this line can be ruled out early as the best move.
|Oct-13-08|| ||OhioChessFan: Hard to believe Black bothered to play his 26th move.|
|Oct-13-08|| ||5hrsolver: At first I was a little puzzled by how the white queen gets attacked by a pawn and a rook at the same time.|
|Oct-13-08|| ||Oliveira: Why "Hastings 3940"?|
|Oct-13-08|| ||cydmd: The combination actually started on move 25.Bxd5. Black is also lost if takes the bishop with the queen.|
25... Qxd5 26.Nf6+ taking the black queen.
|Oct-13-08|| ||YetAnotherAmateur: The solution is blindingly obvious as soon as you look at the position, for 2 reasons:
1. The d5 pawn means that either the queen has to move, white plays Nf6+, or white loses his queen without compensation.
2. The black queen is preventing Nf6+, which white would love to be able to play because it forks the king and e8.|
So the obvious thing to do is divert the black queen away from guarding f6, while at the same time moving the white queen. Ergo 26. Qxe8. The same puzzle a move earlier would probably have been a lot more challenging.
|Oct-13-08|| ||kevin86: Over t5he board,it is not the easiest of positions. The natural move would be a retreat of the queen to b1 or over to f4. Being that this IS a Monday puzzle,it becomes second nature to look for a quick,sharp move as Qxe8+ is.|
I like to call a combination as this as a "loan at shark rates".
|Oct-13-08|| ||YouRang: The first idea that leaps to the eye is Nf6+, forking K+R. Black must answer Qxf6, after which the rook is undefended, and we win the exchange. |
This idea exploits the overworked queen (which is guarding against Nf6+ and Qxe8).
But when a piece is overworked, it's always a good idea to consider attacking from the other angle. In this case, that means taking the Re8 to enable Nf6+.
This consideration would reward us with a much better move: (1) Instead of winning the exchange, we win a full rook [because our N prevents ...Kh7/...Kxh6], and (2) we've taken the queens off leaving white with a dominant material advantage in a simplified position. Black has no better move that to resign.
|Oct-13-08|| ||DoubleCheck: White to play (26?)
considering there is no mate within two or three moves at move 26. you must consider the next best idea, which is either;
A) the best winning position i.e. increasingly advantaging whites topography
B) best combination of moves to gain additional material
So candidates moves are reduced dramically since we are being materialistic about our problem solving thought-process
therefore 26. Qxe8+! becomes a more 'visible' move
followed by 27. Nf6 gaining the queen back.
<<abstraction>: <Puffen: Why didn't black play Nxg3 on move 20. ?> 21. fxg3 gives white immense advantage with the open f-file against the now weakened King position, eg., three pieces now bear down on f7 (and note 21. ... gxh6? leads to a mate in four beginning with 22. Rxf7.)>
Although your ideas of a triple threat on f7 are 'sound' I noticed an error in your comment; 21... gxh6 is not a legal move since the rook pinning the g-file pawn against the king.
I think the key to blacks losing position was his 18th move. This is the most important move for black
Consider the position after white played 18. Re3
Black not only re-directed his rook to the centre (Re8) when clearly 19. Rg3/Rh3 was going to be played next he delayed the development of his knights to the centre
when white played 18.Re3
18. Re3 Nbd5
19. Bxd5 Bxd5
20. Rg3 Kh8 (20...Nh4 is considerable weaker and exposed)
18.Re3 Rc8 (as a possible waiting move)
19. Rg3 Kh8 - should be satisfactory
and now white must sacrifice a few material pieces if he is to penetrate black kingsides defences
|Oct-13-08|| ||johnlspouge: Monday (Very Easy):
W Ritson Morry vs A Thomas, 1939 (26.?)
White to play and win.
Material: B+N for R. The Black Qd8 is overburdened, protecting Rd8 from Qe5 and preventing the fork Nf6+. The threat dxe4 on Qe4 gives the examination of all checks high priority.
Candidates (26.): Nf6+, Qxe8+, Qxg6+
(1) 26.Nf6+ Kh8
Qxf6 27.Qxe8+ leaves White with at least B for P]
27.Qxe8+ Qxe8 28.Nxe8
leaves White with at least B+N for P.
White has a winning move but: "When you see a good move, look for a better one."
(2) 26.Qxe8+ Qxe8 27.Nf6+ Kh8 28.Nxe8
leaves White with B+N for P. Because Black cannot move to capture Bh6 on 27.Nf6+, 26.Qxe8+ is the best move.
|Oct-13-08|| ||johnlspouge: Hi, <lost in space>.|
<Second solution 26. Nf6+ Qxf6 no good is 26...Kh8 27. Qh4 Re4 28. f4 and the mate to follow (Bf8)>
I was aware of the possibility of mate in the 26...Kh8 variation, but the calculation to overwhelming advantage with 27.Qxe8+ was easier. Because my aim is to justify the best move, I do not necessarily calculate the best variations.
Thanks for doing the calculation for me :)
|Oct-13-08|| ||stardust762: I love Mondays! The best medicine after Sunday's puzzles|
|Oct-13-08|| ||soberknight: I had Nf6 which wins the exchange. not as good as Qxe8 which gets the whole rook.|
I can't see why black didn't take on g3. White takes fxg3 and opens a line against f7 maybe, but the bishop is hanging, or maybe there's a better way. I don't see it.
|Oct-13-08|| ||WarmasterKron: Good old Monday. First thought today: "How can I sacrifice my queen?"|
|Oct-13-08|| ||YouRang: <soberknight><I can't see why black didn't take on g3. White takes fxg3 and opens a line against f7 maybe, but the bishop is hanging, or maybe there's a better way. I don't see it.>|
It's hard to see, which shows how great a move was 20.Bxh6!!, apparently leaving the Rg3 hung.
But it's only apparent, and you guessed correctly that 20...Nxg3 opens the f-file creating a deadly attack on f7. Pf7 is a key defensive pawn for black, since it guards key squares g6 and e6.
How can black defend f7?
Try 21...Re7: 22.Nxf7! Rxf7 (if 22...Qc7 then 23.Qg6 w/ mate soon) Q23.Bxe6 and now the black rook is a goner, with more on the way: 23...Qd6 24.Rxf7! Qxe6 25.Rxf7 (threat: Qh7#) Kf8 26.Rg6+ (winning the Q).
Try 21...Rf7: 22.Nxf7 Qe7 (22...Rxf7 transposes to above) 23.Bb1! and no stopping mate.
Try 21...f6: 22.Bxg7! Re7 (if 22...Kxg7 then 23.Qg6+ Kh8 24.Nf7#) 23.Bxf6 Qe8 24.Qf5 and mate soon.
Try 21...f5: 22.Rxf5 Re7 23.Bxg7! Rxg7 24.Bxe6+ Rf7 25.Rxf7 with Qh7# coming up.
|Oct-13-08|| ||Kasputin: The straightforward part is to see the best way to play:
26. Qxe8 Qxe8
27. Nf6+ and white wins the queen.
Black cannot even attack the bishop since the knight prevents the king from coming to h7.
The less straightforward part of the position is to see if 26. Nf6+ could also work - this time with the idea of somehow keeping the white queen and winning with a quick checkmate. But I think black simply takes the knight with the queen and black has no real worries - that is, no worries in terms of a quick mate from the white queen and bishop.
|Oct-13-08|| ||Shams: would be a cooler puzzle if black's rook were on c7 and not c4-- then white could throw in 28.Bg7+ before winning the house.|
|Oct-24-08|| ||patzer2: White solves the Tuesday, Oct 13, 2008 puzzle with a Knight Fork combination initiated with 26. Qxe8+ .|
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