Mar-28-10
 | | Jimfromprovidence: Move 27, white to play, is the LA Times' puzzle for today.
click for larger view
It took me forever to find the key 2nd move and then work out all of the continuations. (The move works whether or not black takes the bishop). Great puzzle. |
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| May-29-20 | | Schwartz: That position is fantastic. |
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May-29-20
 | | agb2002: White has the bishop pair for a bishop, a knight and two pawns. The black queen protects g7. This suggests 27.Bxf7+ Kxf7 28.Rxd6: A) 28... Qxd6 29.Qxg7+ Ke6 30.Rg6+ Kf5 31.Rxd6 wins decisive material. B) 28... Re6 29.Rxe6 Qxe6 (29... Kxe6 30.Qd5#) 30.Qxg7+ Ke8 31.Re1 wins decisive material. C) 28... Nf6 29.Bxf6
C.1) 29... Bxf6 30.Qd5+ Kf8 (30... Ke7 31.Qe6+ Kf8 32.Rg8#) 31.Rg8+ Ke7 32.Qe6#. C.2) 29... Re6 30.Bxg7 wins decisive material.
C.3) 29... Qxf6 30.Rxf6+ Bxf6 31.Qg6+ Ke6(7) 32.Re1+ Kd7 33.Rxe8 Rxe8 34.Qxf6 wins decisive material. D) 28... Bf6 29.Qd5+ as in C.1. |
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| May-29-20 | | Brenin: With all his pieces on the rim, apart from the doubly pinned B on g7, and the Q tied to the defence of that piece, Black is effectively several pieces down, whereas the harmonious coordination of White's pieces is ideal for attack. Removing the last P in the defensive wall is obvious, and the follow up is not hard to find. <agb2002>'s typically thorough analysis proves the point. |
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| May-29-20 | | goodevans: 28.Rxd6 is a truly beautiful move which, alas, I failed to find. 27.Bxf7+ was the first move I looked at but after a long time unable to make it work I turned my attention to other moves. In the end I couldn't make up my mind between <27.Rdf1> and <27.Ne4> as black doesn't seem to have an adequate defence to either. SF agrees that both of these are also winning. |
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May-29-20
 | | thegoodanarchist: Khismat: It is fate |
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| May-29-20 | | offramp: Hey, Bosiocic! Khis-ma-tullin! |
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| May-29-20 | | TheaN: Deduction Friday!
1) Carnage on g7.
2) Prevented by Qh6.
3) Distract the queen.
4) Has to be Rd1.
5) Fastest is Rxd6.
6) Bishop's in the way.
7) Clear the d-file.
<27.Bxf7+ Kxf7> in this case analyzing a decline is pointless, as Bf7 is just assisting in the mate after Rxd6. <28.Rxd6!> and Black has no reasonable escape. Obviously, 28....Qxd6 29.Qxg7+ Ke6 30.Rg6+ +- and White has successfully invaded Black. After 28....Re6 there are a few roads to destruction, I liked 29.Rd7+!? +- where everything in the Black camp is overworked. 28....Nf6 29.Bxf6 +- with d5 available for the queen, and 28....Bf6 29.Qd5+ +- immediately. Black's 'best' is apparently 28....Re1 at +12.5. This is done. |
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| May-29-20 | | eblunt: <Goodevans> I too missed 28.Rxd6 ! and went for the mundane 28. R(d)f1+ which looked pretty overpowering |
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May-29-20
| | Jimfromprovidence: It's a pleasant surprise to see CG use an LA Times puzzle that I posted about 10 years and two months ago as today's problem. The Times back then had a good column, written by a very strong player, Jack Peters. (see below bio). John A Peters. One other angle kibitzers ought to investigate is 27 Nb5, below. It's similar to 27 Ne4, but without the threat of 27...Rxe4. 
click for larger viewThe main threat is 28 Nxd6, seeing 29 Nf5. |
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May-29-20
 | | benveniste: I found 28. ♘b5 after the bishop sack, which I think is good enough to win. Was blind to ♖xd6. |
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May-29-20
| | NM JRousselle: In the "puzzle" position, White has an overwhelming position. I must confess I missed Bf7+ followed by Rd6! However, at least 3 other moves give White a crushing advantage. Moves such as Nb5, Ne4 and Rdf1 all leave White way ahead. I'm not fond of a "puzzle" such as this one. |
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| May-29-20 | | Atking: Black should not be afraid of the consequences of the natural exchange 13...Ne4 14.NxN BxN 15.f3 Bf5 16.g4 hxg 17.hxg because 17...RxN! 18.QxR Nxd4 offers good compensation. As well as 14.BxN BxB 15.f3 Bf5 16.g4 hxg 17.hxg Bxg4 18.fxB Qxg4 Black has at least equalized. |
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| May-29-20 | | RandomVisitor: After 26...Qh6, it is mate in 15
click for larger viewStockfish_20052607_x64_modern:
<86/30 32:13 +M15 27.Bxf7+ Kxf7 28.Rxd6 Nf6 29.Bxf6 Nc5 30.Qd5+> Re6 31.Ne4 Qxf6 32.Nxf6 Bxf6 33.Rxe6 Nxe6 34.Qd7+ Be7 35.Rf1+ Nf4 36.Rxf4+ Kg6 37.Qxe7 Re8 38.Rf6+ Kg5 39.Qg7+ Kh4 40.Rf4+ Kxh3 41.Qg2+ |
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| May-29-20 | | RandomVisitor: After 9.0-0 black might equalize with 9...Ne7
click for larger viewStockfish_20052607_x64_modern:
<40/54 03:29 0.00 9...Ne7> 10.b3 c6 11.h3 h6 12.Bf4 g5 13.Be3 Nf5 14.Qd3 d5 15.Rae1 Be6 16.cxd5 Nxe3 17.fxe3 cxd5 18.Rf2 Rc8 19.Ref1 Re8 20.g4 Qe7 21.Ng3 Qc7 22.Nge2 |
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| May-29-20 | | RandomVisitor: Maybe 7.d4 is too early
click for larger viewStockfish_20052607_x64_modern:
<45/66 23:05 +0.48 7.0-0 0-0 8.b3 Bf5 9.e4> Bd7 10.d3 Nd4 11.Rb1 c5 12.b4 b6 13.Bd2 Rb8 14.h3 Bc6 15.b5 Bb7 16.Kh2 Nd7 17.a4 Ra8 18.h4 a6 19.bxa6 Rxa6 20.Nb5 Bc6 21.Nec3 Nf6 22.Ra1 Ra8 23.Bg5 h6 24.Bxf6 Bxf6 25.Nxd4 exd4 26.Nd5 Bg7 |
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| May-29-20 | | RandomVisitor: <Atking> Stockfish offers an opinion After 13...Ne4
click for larger viewStockfish_20052607_x64_modern:
<55/100 43:58 +0.55 14.Bxe4 Bxe4 15.f3 Bf5 16.g4 hxg4 17.hxg4 Bxg4 18.fxg4 Qxg4> 19.Rg1 Qh5+ 20.Kg3 Nxd4 21.Nxd4 Bxd4 22.Qxd4 Qxg5+ 23.Kf3 Qf5+ 24.Qf4 Qxf4+ 25.Kxf4 Re5 26.Rg2 Kg7 27.Rd1 Rh8 28.Kg3 Rhh5 29.Kf2 Kf8 30.Rd3 Kg7 31.b3 a6 32.Nd5 Rhf5+ 33.Kg3 Rg5+ 55/81 43:58 0.00 14.Nxe4 Bxe4 15.f3 Bf5 16.Rf2 d5 17.cxd5 Qxd5 18.g4 Qd6+ 19.Bf4 Bh6 20.Qc1 hxg4 21.hxg4 Bxf4+ 22.Qxf4 Be6 23.Qxd6 cxd6 24.Nc3 Nb4 25.Ne4 Kg7 26.a3 Nc6 27.Nxd6 Re7 28.d5 Bxd5 29.Rd1 Bb3 30.Rd3 Be6 31.Kg3 Rd8 32.Rfd2 Red7 33.Ne8+ Kf8 |
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| May-29-20 | | Atking: Thanks <RandomVisitor> Yet your analysis are just going too far for my simple human mind <55/100 43:58 +0.55 14.Bxe4 Bxe4 15.f3 Bf5 16.g4 hxg4 17.hxg4 Bxg4 18.fxg4 Qxg4> 19.Rg1 Qh5+ 20.Kg3 Nxd4 21.Nxd4 Bxd4 22.Qxd4 Qxg5+> is 3 pawns for a piece and looks really playable. Isn't it? |
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Kibitzing
sac: 27.Bxf7+
icon.