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Later Kibitzing> |
Dec-26-16 | | ASchultz: I didn't see Kxe5 somehow, but I did see White could escape on the dark squares. So...full credit I hope? |
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Dec-26-16 | | newzild: <AShultz>: Yes |
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Dec-26-16 | | Sularus: Rh8+ KxR
f7 |
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Dec-26-16 | | Abdel Irada: ∞
<Phony Benoni: Just think outside the box. <49.Rh8+ Kxh8 50.f7 Rd3+ 51.Kxe5 Re3+ 52.Kf6> hiding and winning. (4 49...Kf7 50.Rh7+ Kg8 51.f7+.>
Actually, since Black's king doesn't have access to e6, 49. ...Kf7? is met with 50. Rf8#. ∞ |
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Dec-26-16 | | Mayankk: I did see Rh8+, f7 and Kxe5 as an answer to Rook checks but did not have enough visualization power to realize that white can indeed save its f7 pawn in all variations. |
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Dec-26-16 | | agb2002: White is one pawn down.
Black threatens a3, etc.
The black king stops f7. Therefore, 49.Rh8+ Kxh8 (49... Kf7 50.Rf8#) 50.f7 wins. For example, 50... Rd2+ 51.Kxe5 (there is a chance for Black in the case of 51.Kc5 Rc2+ 52.Kb4 Rb2+ 53.Kxa4 Ra2+ 54.Ba3 Rxa3+ 55.Kxa3 Kg7 - +) 51... Re2+ 52.Kd4 Rd2+ (52... Rxe7 53.f8=Q+ Kh7 54.Qxe7+, etc.) 53.Ke3, etc. |
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Dec-26-16 | | diagonalley: good puzzle, but not novice-level |
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Dec-26-16 | | saturn2: Rh8+ followed by f7 gets a queen. |
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Dec-26-16 | | AlicesKnight: Rh8+ gives Black the choice of mate or allowing the KBP to queen. Spite-checks achieve nothing. |
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Dec-26-16 | | morfishine: <49.Rh8+> |
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Dec-26-16 | | The Kings Domain: Got the puzzle but it isn't as easy as the main page description makes it. Good game. |
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Dec-26-16 | | RandomVisitor: 26...Qc7 gives black a small advantage
39...a4 and the game is even. |
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Dec-26-16 | | Beholder: My solution was 49.Rh7 and frankly I don't see why should it be any worse than the text. |
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Dec-26-16 | | Skewbrow: <Beholder>: There may be variations such as 49. Rh7 Kxh7 50. f7 Rd2+ 51. Kxe5 Re2+ 52. Kf6 Re6+ 53. Kg5 Rxe7. The pawn will still queen, but at this point 54. f8Q is not a check (which it would be, forking the rook, if the black king where in h8). It is still an open game. I'm sure there are better ways for white to handle the spite checks, but it may become complicated. |
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Dec-26-16 | | zb2cr: I saw 49. Rh8+ in a fash of intuition, then spent over two minutes persuading myself it really was right. |
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Dec-26-16 | | RandomVisitor:  click for larger viewKomodo-10.1-64bit:
<+M10/30 49.Rh8+ Kxh8 50.f7> Rd2+ 51.Kxe5 Kh7 52.f8Q Rf2 53.c8Q Bxc8 54.Qxf2 a3 55.Qf7+ Kh6 56.Qf6 Kh7 57.Bf8 g5 58.Qg7+ +250.00/30 49.Rh7 Kxh7 50.f7 Rd2+ 51.Kc5 Rc2+ 52.Kb6 Kh6 53.f8Q+ Kh5 54.Bf6 Rc1 55.Qh8+ Kg4 56.Qh4+ Kf3 57.Bxe5 Ke2 58.Qh2+ Kd3 59.Qg3+ Ke2 60.Qg2+ Ke1 61.Qg1+ Kd2 62.Bf4+ Ke2 63.Qe3+ Kf1 64.Qxc1+ Kg2 65.Be5 Bc8 66.Qc2+ Kf1 67.Qd1+ Kf2 68.Qxa4 +18.30/30 49.Bd8 Rd2+ 50.Ke7 Rd7+ 51.Ke8 Rf7 52.Be7 e4 53.Rg1 e3 54.c8Q Bxc8 55.Rxg6+ Kh7 56.Kxf7 Ba6 57.Rg4 Kh6 58.Kg8 Bc8 59.Re4 Bb7 60.f7 Bd5 61.Rxa4 Kg6 62.Ra6+ Kf5 63.Kg7 Bc4 64.f8Q+ Ke5 65.Ra5+ Kd4 66.Bc5+ Kd3 67.Ra3+ Kc2 |
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Dec-26-16 | | TorontoNewf: F7+ followed by f8=Q++
What am I missing? |
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Dec-26-16 | | varishnakov: 49. R-R8+ KxR (49...K-B2 50.R-B8 mate) 50. P-B7 and there is no way to prevent the pawn's queening. |
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Dec-26-16 | | varishnakov: <TorontoNewf>
King takes f7. |
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Dec-26-16 | | garuffa: <torontonewf> welcome to chess! Not all that seems obvious is. |
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Dec-26-16 | | drollere: droll puzzle, slightly less than obvious. |
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Dec-26-16 | | Cheapo by the Dozen: <Phony Benoni>, It's a rook sacrifice on the h-file. What could be more mainstream Monday than that? :) |
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Dec-26-16 | | YouRang: Easy Monday 49.?
 click for larger view
Sac a rook to gain a queen: <49.Rh8+ Kxh8 50.f7>
 click for larger view
And f8Q cannot be stopped...
~~~
...however, black might try <50...Rd2+>, hoping for white to sidestep the check with the blunderous <51.Kc6?>
 click for larger view
Now black has <51...Bd7+!>, and white has problems: - He cannot play f8Q yet because he must get out of check. - He cannot promote the c-pawn because the bishop guards c8. - By vacating f5, black can now guard the f8 promotion square with ...Rf2. e.g. <52.Kc5 Rf2 53.f8Q Rxf8 54.Bxf8 e4>
 click for larger view
Instead of winning, white is likely losing. |
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Dec-26-16 | | stst: Looks like a R-sac will make a new Q:
...
49.Rh8+ KxR, else Kf7 is the only escape but then Rf8#
50.f7 and nothing to stop f8=Q
The Black R+ by Rd2+ is simply wasting time+moves ... the White K can go b7 then c8 eventually. |
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Dec-26-16 | | Nullifidian: 49. ♖h8+ ♔xh8 (♔f7 50. ♖f8#) 50. ♙f7 and one of white's two seventh rank pawns will promote. The king can escape checks by capturing the e5 pawn and then hiding behind the enemy bishop. |
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