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Sep-27-10
 | | agb2002: Black has two knights for a rook, a bishop and a pawn. White threatens 36.Qf3 and 37.Qxg4.
Black can simplify to a won endgame with 35... Nxe4 36.Rxh5 gxh5 - + [2N vs B+P]. Another option is 35... Qxh1+ 36.Kxh1 Nxe4 (or 36... Nf2+ and 37... Nfxe4 - + [2N vs B+P]) 37.Bxg4 Nf2+ 38.Kg2 Nxg4 - + [N vs P]. |
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Sep-27-10
 | | patzer2: It's Monday and 35...Qxh1+! initiates a winning Knight Fork. |
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Sep-27-10
 | | Patriot: I wondered what the catch was, as it seemed too easy, which made me think I was missing something much better. 35...Nxe4 36.Rxh5 gxh5 
OR 35...Qxh1+ 36.Kxh1 Nf2+ 37.Kg2 Nxe4
OR
35...Qxh1+ 36.Kxh1 Nxe4 37.Bxg4 Nf2+ 38.Kg2 Nxg4
I preferred the second line. The first leaves doubled pawns but a strongly posted knight, so it's not that big of a deal. The third line isn't bad but just seemed a little awkward for the knight somehow. |
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| Sep-27-10 | | desiobu: Interestingly Nxe4 didn't even register in my thinking! I went into puzzle mode and immediately saw the decoy + fork tactic. |
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Sep-27-10
 | | Marmot PFL: Seems like half the puzzles lately are of this queen sac knight fork type. |
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| Sep-27-10 | | beginner64: <Once>All good points. There is nothing left for me to say. <Patriot>Ditto. |
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| Sep-27-10 | | fyad reject: people will rush to say that this is too easy but in my opinion this is absolutely the correct level of difficulty for a monday |
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Sep-27-10
 | | kevin86: The solution is easy Qh1  which is not to say that it is not elegant.White must take perforce and the fork will regain the queen at the gain of a piece. |
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Sep-27-10
 | | YouRang: <nuwanda><its just about the definition of puzzle. in my view puzzle means that there is more or less one clear, outstanding, solution.> Yes, well that describes a composed puzzle, but that's not what we get here at cg.com. These are real games, and often in real games, there are multiple ways to win from a given winning position. Some ways may be a bit quicker or more elegant. That just about sums up the type of puzzle we have today. |
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Sep-27-10
| | patzer2: Fritz 10 finds a surprise trapped piece combination with 22. f4!, which, instead of 22. Nf1 =, appears to turn the tables and give White the win. The winning line is 22. f4! exf4 23. Nf3 Qg4 24. e5 fxg3 25. Rc2 gxh2+ 26.
Kxh2 Nf5 27. exd6 (+1.74 @ 20 depth).
P.S.: Of course with the White King stripped of pawn cover and having to use pieces to defend against the menacing Black pieces (despite being a piece up for a pawn), it is a win even a strong amateur might well have difficulty scoring against such a strong master as Blackburne. |
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| Sep-27-10 | | Shamot: well said, Nuwanda! well said!
For once I got the message. :-) |
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| Sep-27-10 | | rapidcitychess: Decoy and Destroy.
I saw this after spending 5 minutes on a Tuesday puzzle that had the same tactic. Easy. |
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| Sep-27-10 | | dumbgai: Silly me, I went for just 35...Nxe4 which is basically the same but with doubled pawns. |
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Sep-27-10
 | | DarthStapler: Got it easily, although I was a little distracted by the fact that the queen was already under attack. |
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| Sep-27-10 | | LIFE Master AJ: <Sep-27-10 nuwanda:
i do not understand this puzzle.
35...Nxe4 wins, 35...Qxh1+ 36.Kxh1 Nxe4 wins and 35...Qxh1+ 36.Kxh1 Nf2+ 37.Kg2 either Nxe4 wins black could hardly go wrong...>
For someone who says he does not understand ... I'd say he pretty much nailed it! |
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| Sep-27-10 | | LIFE Master AJ: My choice was 35...QxR/h1+; 36.KxQ/h1, NxQ/e4; 37.BxN/g4, Nf2+; 38.Kg2, NxB/g4; 39.Kf3, h5; 40.Re1, Kf7; for the following reasons: a.) Material is traded down. In a won position, Capa stated that you always pare down as much material as possible. (And I agree with this ... 99.9999% of the time.) b.) Black's Knight on g4 menaces the WK, and possibly the Rook, and is also virtually unassailable on g4. c.) I have the e-file and the half-open a-file for my Black Rook. (I had plans of getting my Rook to the a-file, tying down White's army completely.) d.) I have two pawn islands to White's three.
e.) Now that the light-squared Bishop has been traded off, my (Black) King is free to wander up to f5 and join the game. Oh yes ... and by the way ... I am also a piece up. |
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| Sep-27-10 | | LIFE Master AJ: I do remember reading a story how the young Capa was giving a simul in Cuba. He was playing a wily veteran, and the old guy had given a good fight. (In an endgame, he was down a piece, but had two dangerous passed Pawns.) Capa blithely sacked the piece back! (A turn which surprised almost everyone.) The result was a K+P endgame that was equal from a material standpoint, but basically just a matter of calculation, and an elementary win for Capa ... I don't know if the engines would approve. I do know that - over the years - I have blown quite a few won games by too much complexity, when I could have nearly always chosen the Capa method and probably won at least 95% of the time ... ... ... |
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| Sep-27-10 | | LIFE Master AJ: <Sep-27-10 DarthStapler: Got it easily, although I was a little distracted by the fact that the queen was already under attack.> Your handle is ... TOO MUCH!!!
(I approve. But it will be hard to see a post from you for a while without at least a small chuckle escaping from my mouth ...) |
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| Sep-27-10 | | LIFE Master AJ: <<<<<<<<Sep-27-10> YouRang:> <nuwanda>> <its just about the definition of puzzle. in my view puzzle means that there is more or less one clear, outstanding, solution.>>
Yes, well that describes a composed puzzle, but that's not what we get here at cg.com.> These are real games, and often in real games, there are multiple ways to win from a given winning position. Some ways may be a bit quicker or more elegant.> That just about sums up the type of puzzle we have today.> >>Nothing to add, other than ... GOOD JOB!!! <YouRang> |
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| Sep-27-10 | | wals: Hooray for the Queen sac.
Analysis by Rybka 4 x 64
White: depth 17: time 4 min:
(-1.21):26.Qd4.
Best,
1.  (0.45): 26.Nc6 Bxf1 27.Rxf1 fxg3 28.Rc2 gxh2+ 29.Kh1 Qf4 30.Ne7+ Kf7 31.d6[] Qxd6 32.Rd2 Qc5 33.Nd5 Kg8 34.Rxh2 c6 35.Nc7 Nf7 36.Nxa8 Rxa8 37.Qd7 Nc3 38.f4 Nxb1 39.Rxb1 Qxc4 40.Qe7 Qd3 2. (0.32): 26.Nd3 Bxf1 27.Rxf1 fxg3[] 28.Qe1 gxh2+ 29.Kxh2 Nc5 30.Qg3 Qd2+ 31.Qg2 Nxe4 32.fxe4 Ng4+ 33.Kh3 Qxg2+ 34.Kxg2[] Ne3+ 35.Kg1 Rxf1+ 36.Rxf1[] Nxf1 37.Kxf1 Ra4 38.c5 bxc5 39.Nxc5 Rc4 40.Nb3 Kf7 41.Ke2 Black: depth 17: 5 min:
(=0.00):26...Bxf1.
Best,
1.  (-1.21): 26...Rae8 27.Ng4 Bxg4 28.fxg4 Nxg4 29.d6 cxd6 30.Qd5+ Qxd5[] 31.cxd5 f3 32.Red1 Rc8 33.h3 Ne5[] 34.Rxc8 Rxc8 35.Rd4 Rc1 36.Rxa4 Rxb1 37.Ra7 b5 38.Ra6 Re1 39.Rxd6 Rxe4 40.Rd8+ Kg7 41.Rb8 Re2 2. (-1.15): 26...fxg3 27.hxg3 Bxf1 28.Kh2 Qh5+ 29.Kg1 Bh3 30.f4 Nc5 31.Rc3 Bc8 32.Nf3 Bd7 33.Qd2 Ng4 White: depth 16: 4 min:
(-1.75):27.Kxf1.
Best,
1. = (0.00): 27.Rxf1 fxg3 28.d6 cxd6 29.Qd5+ Kg7 30.Qxd6 Rfd8 31.Qc7+ Kg8 32.f4 gxh2+ 33.Kh1[] Qf6 34.Qc6 Qxc6 35.Nxc6 Rd2 36.Rc2 Rxc2 37.Bxc2 Nc5 38.Bb1 Ng4 39.Ne7+ Kf7 40.Nd5 Ra7[] 41.e5 Ke6[] 42.Re1 Black: depth 18: 3 min:
(-0.62):28...Rae8.
Best,
1. (-2.04): 28...Qxg3 29.Ke2 Rae8[] 30.Nd3 Rxf3[] 31.Qg1 Rxe4+ Black: depth 17: 4 min:
(=0.00):30...Qh5.
Best,
1.  (-0.70): 30...Ree8 31.f4 Qg4 32.Rce1 Nc5 33.Qd2 Qd7 34.Rh1 Qg7 35.e5 Nf5 36.Bc2 Ra8 37.g4 Ne7 38.d6 Rad8 39.Rhf1 Qf7 2. (-0.53): 30...Re7 31.f4 Qg4 32.Bc2 Nc5 33.Rce1 Ree8 34.a4 Ra8 35.Qa1 Qd7 36.Rh1 Ng4 37.e5 Qg7 38.Qd4 Ra7 39.Bd1 h5 40.Bxg4 hxg4 41.Ra1 White: depth 19: 4 min:
(-3.12):33.Bd1.
Best
1. (-0.48): 33.Rf3 g5 34.Rh1 Qg6[] 35.Bb1[] Nxe4 36.d6 Qxd6 37.Qxd6 Nxd6 38.Rxh6[] Re2+ 39.Rf2 Rxf2+ 40.Kxf2 gxf4 41.Bd3 fxg3+ 42.Kxg3 Rf7 43.Rh5 c5 44.a4 Kf8 45.a5 bxa5 46.Rxc5 Nb7 47.Rc6 Ke7 48.Bc2 2. (-0.57): 33.Rce1 g5 34.Rh1 Qg6[] 35.f5[] Qg7[] 36.Qxg7+ Kxg7[] 37.f6+ Rxf6[] 38.e5[] Rf7 39.e6 Rf6 40.Rh5 g4 41.Rg5+ Kh8 42.Rh5 Ref8 43.Re2 Ra8 44.Rg5 Ng8 45.Rxg4 Ne7 46.Bb1 Ng6 47.Rg5 Kg7 48.Rh5 and White resigned move 37,
with a Bishop and pawn for 2 Knights. |
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| Sep-27-10 | | CarlG: What makes the whole sequence better is 34...Rxe4. This whole sequence of pseudo sac combinations really gained a mere pawn. Hats off to Blackburne. |
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| Sep-27-10 | | wals: White: Available moves for move 22.
Nf1. =0.22.
Analysis by Rybka 4 x64: depth: 20 time 10 min:
1. (0.37): 22.Bc3 f6 23.Nf1 Nf7 24.Ne3 Qh5 25.g4 Qh4 26.Qe2 h5 27.Qf2 Qxf2+ 28.Kxf2[] hxg4 29.Nxg4 Kg7 30.Kg3 Rh8 31.Bd2 Rh5 2. (0.36): 22.Qe2 f6 23.Bc3 Bd7 24.Kg2 Qh5 25.h4 Na4 26.Red1 Nxc3 27.Rxc3 g5 28.Rh1 g4 29.fxg4 Bxg4 30.Qd3 Rf7 31.Re1 Bd7 32.Qf3 Ng4 33.a3 3. = (0.22): 22.Nf1 Na4 23.Ba1 f6 24.Ne3 Nf7 25.Qd2 Qh5 26.Qe2 Nd8 27.Nxd8 Rfxd8 28.Bc2 Nc5 29.Bd1 Ra3 30.Bc3 Rda8 31.Rc2 Qh6 32.Qd2 Na4 33.Re2 4. = (0.21): 22.Kh1 f6 23.Bc3 Nf7 24.Nf1 Qh5 25.Ne3 Bd7 26.Rf1 Na4 27.Ba1 Bc5 28.Qd2 Ng5 29.Qe2 Bxc6 30.dxc6 Bxe3 31.Qxe3 5. = (0.21): 22.Nb3 Qh5 23.Rc3 f6 24.Bc1 Bd7 25.Rf1 Nf7 26.Be3 Bxc6 27.dxc6 Rfd8 28.Qe2 Ng5 29.Nxc5 Bxc5 30.Bxc5 bxc5 31.Rd3 Rd4 32.Rb3 Ne6 33.Bd3 Rd6 34.Qb2 22.f4. =0.00.
1. = (0.00): 22...exf4 23.Nf3 Qg4 24.e5 fxg3 25.Rc2 Rfe8 26.exd6[] Rxe1+ 27.Qxe1 gxh2+ 28.Kxh2 Qxf3 29.Re2 Ng4+ 30.Kg1 f6[] 31.dxc7 Ne3[] 32.Ne7+ Kf8 33.Qd2 Qg3+ 34.Kh1 Qf3+ 35.Kg1 Qg3+ 36.Kh1 Qf3+ 37.Kg1 Qg3+ |
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| Sep-27-10 | | turbo231: <LIFE Master AJ:I do remember reading a story how the young Capa was giving a simul in Cuba. He was playing a wily veteran, and the old guy had given a good fight. (In an endgame, he was down a piece, but had two dangerous passed Pawns.) Capa blithely sacked the piece back! (A turn which surprised almost everyone.) The result was a K+P endgame that was equal from a material standpoint, but basically just a matter of calculation, and an elementary win for Capa ...> Please excuse my ignorance but "Capa blithely sacked the piece back!" What piece? |
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| Sep-27-10 | | smalldreams: 35. ... Qxh1+
36. Kxh1□ Nf2+
37. K(any) Nxe4
only easy because I knew there was a queen sac in the works... supposedly Tal always looked for queen sacs first. |
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| Sep-28-10 | | kurtrichards: Typical of Mondays puzzle...very easy...
35. ... Qxh1+ winning. |
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sac: 35...Qxh1+