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| Apr-29-19 | | groog: A little harder for a Monday puzzle, quite enjoyable. |
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| Apr-29-19 | | Shadout Mapes: I actually used a different mate, but it's in the same number of moves: 29.Bg7+ Kg8 30. Bxh7+ Kxh7 31. Qh6+ Kg8 32. Qh8# I guess I saw how nice the pawn on f6 is for keeping black's queen out of the game, so I hit upon this line by seeking combinations where it stays put. |
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| Apr-29-19 | | Cybe: 26... Ne6?? 26... Be6 leeds to perpetual draw by White. |
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| Apr-29-19 | | areknames: <Shadout Mapes> After 30.Bxh7+ Black has 30..Nxh7. |
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| Apr-29-19 | | saturn2: I saw 29. Qg7+ Rxg7 30. fxg7+ Kg8 31. Rxf8+ (or gxf8=Q+ Qxf8 32. Rxf8#) Qxf8 32. gxf8=Q# |
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| Apr-29-19 | | malt: Nice Monday Q-sac
29.Qg7+ R:g7 30.fg7+ Kg8 31.gf8/Q+ Q:f8
32.R:f8# |
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Apr-29-19
 | | Willber G: <Shadout Mapes: I actually used a different mate, but it's in the same number of moves: 29.Bg7+ Kg8 30. Bxh7+ Kxh7 31. Qh6+ Kg8 32. Qh8#> You missed 30...Nxh7 which stops the attack. |
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| Apr-29-19 | | SpamIAm: I would underpromote to a rook on move 31 or 32. Just because I could. |
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| Apr-29-19 | | zb2cr: 29. Qg7+ starts a cascade that leads to mate. 29. ... Rxg7 is forced, after White White has 30. fxg7+, Kg8; 31. gxf8(Q)+, Qxf8; 32. Rxf8#. |
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| Apr-29-19 | | alexrawlings: For some reason my brain couldn't visualise the position through to mate... I knew it had to be <29 Qg7+> as it's a monday puzzle and looking at the position nothing else made sense to me. Having looked at it after posting I hadn't taken in to account the bishop on h6 was also pointing to the queening square on f8, together with the pawn on g7 and the rook on f1 so I kept thinking the combination didn't work as white didn't have sufficient control of f8. I'm going to be kind to myself and put this down to a long weekend and a lack of sleep! |
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| Apr-29-19 | | landshark: <alexrawlings>
Tackling puzzles at the wrong time (like right before bed) can trip me up too.
The difference between <before coffee> and <after coffee> is probably around 350 rating points - |
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Apr-29-19
 | | Messiah: It seems the moderation is suboptimal, to say this way. |
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| Apr-29-19 | | Walter Glattke: A second way was 29.Bg7+ Kg8 30.Qh6, now, find a good move for black (30.-d3? 31.Bxf8 Qxf8 32.Qh7#), slaughtering Festival with 30.-Rxf6 31.Rxf6 Be6!? 32.Bxf8! and Qh7#. I always overlook anything, find it! (30.-Qd7 31.Bf8 Rxf8 32.Bd5+ Rf7/Qf7 33.Qg7#) |
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Apr-29-19
| | Willber G: <Walter Glattke: A second way was 29.Bg7+ Kg8 30.Qh6, now, find a good move for black (30.-d3? 31.Bxf8 Qxf8 32.Qxh7#)> 32.Qxh7 is not mate, there is 32...Rxh7. |
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| Apr-29-19 | | olinart: Walter, I started looking at Bg7+ too. It fails on 30 ..Be6 so that31. BxF8 is answered by R(a8)xB. |
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Apr-29-19
 | | Check It Out: I looked at this one for quite awhile before finally making 29.Qg7+ work. My mind was busy looking at Bg7+s, Bxh7+s, the rook on f1s influence, the g8 square, etc. It finally clicked when I simply followed 29...Rxg7 30.fxg7+ down the path, and lo and behold, the white bishop on h6 was still there, eyeing f8. |
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| Apr-29-19 | | Damenlaeuferbauer: Of course, my old Hungarian friend Andras, who was 3rd - 4th in the Riga Interzonal in 1979 and qualified there for the Candidates cycle, where he lost unfortunately in the quarter-finals against Robert Huebner in Bad Lauterberg in 1980, found the mate in 4 moves in this Interzonal game in Mexico 2 years later: 29.Qg7+,Rxg7 30.fxg7+,Kg8 31.g7xf8Q+,Rxf8 32.Rxf8#
By the way, he told me that he convinced Magnus Carlsen last summer with many new ideas to play the Sicilian Sveshnikov and Grunfeld Defense in his World Championship match 2018 against Fabio Caruana, but unfortunately Caruana only played 1.e4. |
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Apr-29-19
 | | Jimfromprovidence: Here's a side puzzle.
If white had tried 29 Rxc6 and black had responded by refusing to take the rook and instead had tried 29...Qd7, below, adding more protection for g7, does 30 Qg7+ still win for white? 
click for larger view |
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Apr-29-19
| | Check It Out: <jim> it looks like after the exchanges white would be left up an exchange for a pawn with powerful f file control, but black does have those connected passers. I'd say it's a win for Carlsen if all that is correct. |
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| Apr-29-19 | | swclark25: I also went with 29.Bg7+ This moves also works per the computer analysis, just not as good as 29.Qg7+ The moves after Bg7+ are the important ones. If 29.Bg7, mated-in-8 (23 ply) 29...Kg8 30.Bh6+ Ng6 31.Bxg6 Ne7 32.Bxf7+ Kxf7 33.fxe7+ Bf5 34.Qxf5+ Qf6 35.Qxf6+ Ke8 36.Qd6 Rd8 37.Qxd8# |
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| Apr-29-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 23 dpa dne
1. + / = (0.44): 15...Rb8 16.N5d4 Bd7 17.Bc3 f6 18.Nxc6 bxc6 19.Na5 Be8 20.Qd2 Qc7 21.Rfd1 Kg7 22.a3 c5 23.Qe3 Bd7 24.b3 Rg8 25.Be4 Be8 26.Rc2 f5 27.Bg2 Bf6 28.Bxe5 2. + / = (0.63): 15...f5 16.e3 g4 17.Bc3 Nf7 18.Rc2 a6 19.N5d4 Qc7 20.Nxc6 bxc6 21.Ba5 Qb7 22.h3 e5 23.hxg4 fxg4 24.Bc3 Qc7 25.f4 gxf3 26.Qxf3 Nd8 27.Qd1 Rxf1+ 28.Qxf1 a5 29.Rf2 a4 30.Nd2 |
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| Apr-29-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 22 dpa done
1. = (0.24): 13...h5 14.h3 e5 15.Bd2 Nf6 16.Nd5 Bf5 17.Re1 Rc8 18.e4 Be6 19.Qf3 Qd7 20.h4 b6 21.Bc3 Rfe8 22.Qd3 Bg4 23.f3 Be6 24.Nd2 Bd8 2. + / = (0.26): 13...Re8 14.a3 e5 15.Bd2 Be6 16.Nd5 Rc8 17.Re1 f5 18.e4 fxe4 19.Bxe4 Rf8 20.f3 Nf6 21.Nxf6+ Rxf6 22.Be3 Qd7 23.Nd2 Rf7 24.Bd5 h6 25.Ne4 Nd4 26.Bxe6 Qxe6 27.Bxd4 exd4 28.Qxd4 Rxf3 |
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| Apr-29-19 | | cormier: 
click for larger viewAnalysis by Houdini 4 d 24 dpa done
1. = (0.24): 12...h6 13.h3 Bd7 14.Nd4 a6 15.Na4 Rb8 16.Nb6 Be8 17.b3 Ne5 18.Qd2 Ned7 19.Na4 Ne5 20.Nc3 Bd7 21.Rfd1 Qc7 22.a3 Rbc8 23.Rc2 Rfe8 24.Kf1 Rcd8 25.Kg1 Rc8 26.Kf1 2. = (0.24): 12...Ng4 13.Bf4 Re8 14.a3 e5 15.Bd2 Be6 16.Nd5 Rc8 17.Qc2 Qd7 18.Rfd1 h6 19.Qd3 f5 20.f3 e4 21.fxe4 Bd8 22.c5 fxe4 23.Qxe4 Nf6 24.Qc4 dxc5 25.Nxc5 Bxd5 26.Nxd7 Bxc4 27.Nxf6+ Bxf6 28.Rxc4 Rxe2 29.Bd5+ |
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Apr-29-19
 | | Breunor: This is one of those games that the patzer move seems better. Black is ok with 25 ..... Rxf6, the first move that comes to my mind. I checked the computer, 25 Rxf6 is scored at 0.3. The text move Rf7 though is the losing move, scoring 3.5. |
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Apr-29-19
| | Jimfromprovidence: <Check It Out> <it looks like after the exchanges white would be left up an exchange for a pawn with powerful f file control, but black does have those connected passers.> <Check It Out> White does a little better than you indicate, basically winning a piece in what seems like a forced line of play. After 29 Rxc6 Qd7 30 Qg7+ the line goes 30...Rxg7 31.fxg7+ Qxg7 32.Bxg7+ Kxg7 33.Rc7+ Kg8. 
click for larger view It ends after 34.Bd5+ Be6 35.Rxf8+ Rxf8 36.Bxe6+ Kh8 37.Rxb7. 
click for larger viewShould be good enough to overcome the connected passers. |
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Kibitzing
sac: 23.fxg5