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Later Kibitzing> |
| Aug-06-15 | | morfishine: Double exposed check is too much for black to handle: <29.Re8++> and both replies lose: 29...Kg7 30.Qe5+ f6 31.Qe7# or 29...Kxe8 30.Nf6# ***** |
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| Aug-06-15 | | whiteshark: Arghhh, missed <30...Kh7 31. Qxh8#. Yes, the queen is protected by the rook on e8 which can itself be taken ... but black doesn't have time to capture.> and wanted to play 31.Rxh8+ Rxh8 32.Nf6+ Kg7 (...Qxf6 33.Qxf6 is hopeless, too) 33.Nd7++, winning black's ♕. D'oh |
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| Aug-06-15 | | wooden nickel: 26... Db1+ looked like it wins a rook at first, however the following 27.Qxd6 gave good compensation, maybe 26... Rh7 would have been better!
click for larger view<patzer2: Black's decisive mistake ... 28...Qb6?? ... Instead of 28...Qb6??, Black can hold on with 28...Bxe4! ...>
That's a very interesting line indeed!
click for larger view |
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| Aug-06-15 | | Nick46: Hooray. It's been a long time since I solved a Thursday POTD. |
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| Aug-06-15 | | Nick46: PS Winnig was not on; he got his fingers Bernd. |
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| Aug-06-15 | | saturn2: As soon as I saw Re8 I knew it is the solution. Neither Kg7 nor Kxe8 helps black.
Before this however I calculated some silly lines after Rxf7? followed by Ng5+? But the remaining queen and the white bishop cannot deliver mate. |
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| Aug-06-15 | | wooden nickel: <Nick46: PS Winnig was not on; he got his fingers Bernd.>
LOL 8-) ... that's the spirit! |
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| Aug-06-15 | | mel gibson: I love double checks. |
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| Aug-06-15 | | Abdel Irada: <<*>Anyone seen my white cane?<*>> I made this puzzle unnecessarily hard for myself by overlooking one "minor detail," and therefore saw no mate, but only a winning endgame. The key move is easy enough to find once you eliminate two temptations. The first is to win a piece with 29. Rxa7+?, which would be great if White weren't a rook down. The second is to try the double check 29. Rxf7++?, which fails to 29. ...Kxf7 30. Ng5+, hxg5 31. Bd5+, Kg7 32. Qe7+, Kh6 33. fxg5+, Kh5 34. Bf3+, Kh4  . This leaves <29. Re8++, Kg7> (not 29. ...Kxe8 30. Nf6#) <30. Qe5+>, where Black can lose faster with 30. ...Kh7?. This is where I developed amaurosis schacchisti and missed the mate in one with 31. Qxh8#, for some reason having looked only at 31. Rxh8+, which loses. So instead, I examined 31. Nf6+, Qxf6 32. Qxf6, Rhxe8 33. Qxf7+, Kg8 34. Qxa7, when White should win the ending. However, since 30. ...Kh7? *does* allow mate in one, Black has to choose between 30. ...f6 31. Qe7# and the (relatively best) <30. ...Qf6 31. Qxf6+, Kh7 32. Qxh8#>. ∞ |
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| Aug-06-15 | | OutOfSync: Yes, it seems simple on the surface, and you all clarify this or that minor point, but to truly discover the pure essence, the fundamental singularity, the crystalline clarity of the concept of this position, we need a ....chrisowen! Where are you chrisowen?! WHERE ARE YOU??!! |
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| Aug-06-15 | | Caissas Clown: <shishio71>: It must be the dementia or something, but this seems way too easy to be anything past a tuesday puzzle... Yep - I got this quicker than Tuesday's puzzle - and quicker than Monday's ! |
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Aug-06-15
 | | Penguincw: Darn it! Played the wrong rook move (29.Rxf7+ Kxf7 30.Bc6 is how far I got). |
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| Aug-06-15 | | patzer2: <wooden nickle> An improvement to set a trap after 28...Bxe4! 29. Rb7+ is 29...Kg7 (diagram below)
click for larger viewwhen 30. Rxb1?? loses to 30...Bxb1 31. Qe5+ Kh7! 32. Qc7 Bd4! 33. Qxf7+ Bg7 (-3.64 @ 24 depth, Deep Fritz 14). Here (diagram above) White should play the in-between move 30. Qe5+! with a slight edge after 30...Kg8 31. Rxb1 Bxb1 32. Qc7  . P.S.: With best play, 28...Bxe4! 29. Rb7+ Kg7 and 28...Bxe4! 29. Rb7+ Kg8 (analyzed in post above) transpose. But because Black can set a difficult trap with no harm done, I now prefer 28...Bxe4! 29. Rb7+ Kg7! over 28...Bxe4! 29. Rb7+ Kg8. |
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Aug-06-15
 | | Fusilli: <Caissas Clown: <shishio71>: It must be the dementia or something, but this seems way too easy to be anything past a tuesday puzzle... Yep - I got this quicker than Tuesday's puzzle - and quicker than Monday's !> Indeed. Pretty doesn't make it more difficult. I was more careful than usual revising my calculations to make sure I had not overlooked anything, since it did seem below Thursday level. |
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| Aug-06-15 | | kevin86: I saw the wrong double check...after the text, the invading rook acts as a blockade to the black queenside pieces and white wins quickly! |
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| Aug-06-15 | | paavoh: <Once> Yes, lack of time to defend, or is it a nice blocking job by the offensive linesmen (Qd6, Re8)? |
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| Aug-06-15 | | OutOfSync: Thank God!! NOW I understand the crux, the core, the ultimate singularity of individual thought, conceptually embodied within the physical manifistation of the position. Once again, THANK YOU CHRISOWEN!!!! |
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| Aug-06-15 | | wooden nickel: <patzer2: But because Black can set a difficult trap with no harm done, I now prefer 28...Bxe4! 29. Rb7+ Kg7!...>
That's always a good tactic setting a difficult trap with no harm done... I guess this comes out
click for larger viewAfter 29.Rb7+ Kg7 30.Qe5+ Kg8 31.Rxb1 Bxb1 32.Qc7
I'm not sure if I would prefer Black or White... you're probably right, White may have a slight edge. |
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| Aug-06-15 | | jith1207: <OutOfSync> In Chrisowen's immortal words, this puzzle is solved by a simple but instructive concept: " Do huffle and shuffle go build vehicle e8 ... " |
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| Aug-06-15 | | BOSTER: I would not say that I'm a stranger in chess world.
But I still unable to describe such mental phenomen , which is nature of the mind, when our vision sometimes get trapped by some pieces, when concentration does not exist, when some chess pictures are disappeared without any trace, leaving only invisible holes. <Fusilli: I was more careful than usual revising my calculation>, he understood that in this puzzle something is not so simple. <whiteshark: missed 31.Qxh8#>. <AI: overlooking one minor details>. The mate after 29.Re8+ if Kxe8 30.Nf6#.
This is very well-known pattern.
But if 29...Kg7 30.Qe5+ this is obvious.
But after 30... Kh7 I forgot about Qb6 and saw mate on g7, <playing> Nf6+, Kg7, Nh5+ Kh7, Qg7#.
I even didn't look at the h8 direction, I had no time.
"A poor process for move selection" said Heisman.
<Look for a better move> you can find in the book. But looking at the diagram <CG> did not give this advice on the screen.
If he did, I would found 31.Qxh8#. |
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| Aug-06-15 | | jith1207: True, I went both routes of <whiteshark> and <BOSTER> as it gave fantastic knight play to my anticipatory vision. Probably it was fun to envision the next move of Knight which actually closed the path to Qxh8# my eyes as well. |
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| Aug-06-15 | | dark.horse: Very sudden end for a Thursday. |
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| Aug-06-15 | | Halldor: The trap is set, White threatens discovered check, but Black can exchange Queens. So double check is the only way. Therefore I tried that first, and to my surprise, Black can't take the Rook, 29 Re8++ Kxe8?? 30 Nf6#. Then I believed I was on the right track. So 29… Kg7 is the only move; 30 Qe5+ and now
a) 30… f6 leads to mate after 31 Qe7#, and
b) 30… Kh7 is also a mate after 31 Qxh8#.
Amazing fireworks! |
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| Aug-06-15 | | TheFocus: This was way too easy for a Thursday puzzle.
I want my money back! |
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| Aug-06-15 | | TheFocus: Black got burned. He's not winning. |
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sac: 26.Rxe7