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| Apr-19-07 | | MostlyAverageJoe: Got it exactly despite 3 hours of sleep in last 48. Or maybe I am daydreming :-) Either way, pleasurable puzzle. |
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Apr-20-07
 | | gawain: Why does everyone think that Re8+ first is "much more forcing" than Nh6+ first? After 21 Rxe8 B could have replied 21 ...Qc7 and put off mate for at least ten moves. The black Q at c7 will cover the f7 square. In some variations the Q moves to d8 from which it covers the f6 square. Either way there is no quick forced mate for white. A conclusive win after either 21 Rxe8 or 21 Nh6+ but no quick force. |
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| Apr-20-07 | | Marco65: <gawain> <but after Khalifman's actual 21 Rxe8 B could have replied 21 ...Qc7 with the same effect> With the small difference that 21.Rxe8 Qc7 just leaves White a piece ahead so it doesn't really need to be calculated at all. While after 21.Nxh6+ gxh6 22.Rxe8 Qc6 material is still equal so you need to see 23.Re6 to actually solve the puzzle! |
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Apr-20-07
| | gawain: <Marco65> <With the small difference that 21.Rxe8 Qc7 just leaves White a piece ahead . . . while after 21.Nxh6+ gxh6 22.Rxe8 Qc6 material is still equal so you need to see 23.Re6 to actually solve the puzzle!> Good point. |
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| Apr-22-07 | | MostlyAverageJoe: < Why does everyone think that Re8+ first is "much more forcing" than Nh6+ first?> Both result in a forced mate; in 11 after Re8+ and in 13 after Nh6+. IMHO, Re8+ is more inviting for the black to make a mistake, just like the one in the game (the 21 ... Rxe8 blunder, changing mate in 11 into mate in 5). After Nh6+, it is nearly impossible to make an immediate mistake (21 Nh6+ Kh8?? results in a mate in 2). |
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| Oct-10-10 | | sevenseaman: 21. Rxe8! Its like taking out an insurance policy before boarding a flight. You do not exactly contemplate death, but you just wish to remove an irritant. |
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| May-06-11 | | iking: 21.?
click for larger viewnice R sac .... |
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| May-06-11 | | gaatab: 20:qa5?? is the losing move,
leaving f6...
better was g6,
and the game is better for white,
but black wouldn't be losing so fast. |
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Dec-02-12
 | | LIFE Master AJ: Great game ... |
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| Jul-14-15 | | SpiritedReposte: <Wiz Khalifa> |
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Jul-24-19
 | | al wazir: Is 12...Bxd5 13. Qh5 really that bad for black? 13...Be6 14. Qxh7+ Kf8 15. Qh8+ Ke7 16. Qxg7 Nd7, and now black is threatening to trap the ♕. 17. f5 Rg8 18. Qh6.
With either 18...Bxg3 or 18...Rh8, black has counterplay. |
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Jul-24-19
 | | Penguincw: Haven't attempted a POTD in a while, and did not get this one. Random puzzle I'd like to share:
White to move, and <not> mate in one: 
click for larger view |
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| Jul-24-19 | | agb2002: White can attack the black king with four pieces, starting with 21.Nh6+: A) 21... gxh6 22.Rxe8
A.1) 22... Rxe8 23.Qg4+ Bg7 (23... Kh8 24.Bxf6+ Bg7 25.Qxg7#) 24.Bxf6 and mate next. A.2) 22... Qb6 (protects f6) 23.Qg4+ Kh8 24.Re6 wins decisive material (24... fxe6 25.Bxf6+ Bg7 26.Qxg7#; 24... Bg7 25.Rxb6). A.3) 22... f5 23.Qxh6 Rxe8 24.Qg5+ Bg7 25.Qxg7#. B) 21... Kh8 22.Qxf7 (better than the prosaic 22.Nxf7+ Kg8 23.Nxd8) 22... gxh6 23.Rxe8 Rxe8 24.Bxf6+ Bg7 25.B(Q)xg7#. |
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| Jul-24-19 | | agb2002: I missed a mate in one in my line B: 23.Qxf8#! |
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| Jul-24-19 | | mel gibson: It's mate in 11 according to Stockfish 10
which is not that easy.
21. Rxe8 !
(21. Rxe8 (♖e1xe8 ♕a5-c7
♘f5xg7 ♖d8xe8 ♘g7xe8 ♗f8-g7 ♕h5-g4 ♔g8-f8 ♕g4xg7+ ♔f8xe8 ♖f1-e1+ ♕c7-e7
♕g7-g8+ ♔e8-d7 ♖e1xe7+ ♔d7xe7 ♗b2xf6+ ♔e7-d6 ♕g8xa8 ♔d6-d7 ♕a8-d8+) +M11/52
27) |
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| Jul-24-19 | | Steve.Patzer: I would have preferred to see the smothered mate after 22....Kh8. |
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| Jul-24-19 | | Granny O Doul: <al wazir> In your line, 15. Nh5 looks pretty strong. If then 15...Nd7, simply 16. Nxg7 and Black looks broken. Speaking of Chernev's "Golden Dozen" (as twin phoenix did a dozen years ago), I must have taken it out a half-dozen times from the library. It was fun for a kid still newish to chess though it did express too exalted an opinion of the godliness of all the players. But that was Chernev. Though written in 1976, it was as if time froze in 1972 or 3, because Fischer was treated in the present tense. Also, the cover suggests that knights are better than bishops. Maybe though it was because he thought Tal and Smyslov more complementary than Botvinnik and Petrosian. It also seemed odd that Rubinstein got only a pencil sketch as if photography had not been invented by his time. |
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| Jul-24-19 | | stacase: 21...Pg6 Doesn't work for Black because 21.Rxe8 pinned his Bishop. White's b2 Bishop is the real killer. |
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| Jul-24-19 | | SpamIAm: <Penguincw>, the solution for your puzzle is 1.Rc6. |
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| Jul-24-19 | | DLev: And the explanation is Rc6 unpins the R on b7 allowing Rxg7. |
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Jul-24-19
 | | doubledrooks: I got most of the variations right except I messed up after 21.Nh6+ gh 22.Rxe8 Qb6. |
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Jul-24-19
 | | OhioChessFan: Got it Pengo. Very nice. |
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| Jul-24-19 | | thegoodanarchist: Easy puzzle |
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| Jul-24-19 | | TheaN: I started with 21.Nh6+ because I didn't see 21.Rxe8 Rxe8 22.Nh6+ Kh8? 23.Qxf7! and mate can't be prevented. Seeing that, I do realize 21.Rxe8 is more invasive as this instantly takes a piece. After 21.Nh6+ gxh6 (Kh8 and either capture on f7 is terrible but Qxf7 is #2 +-) 22.Rxe8 material's even but Black's still in a world of hurt. However, I missed the direct defense of f6 with 22....Qa6 or Qb6 but intended to play 23.Rf3! anyway, where Black can't prevent a mate on g7. |
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| Jul-24-19 | | Cheapo by the Dozen: I got the move order wrong in a quick solve because I didn't see the mate at g8. Still a win. |
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