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|Jul-14-11|| ||Gregor Samsa Mendel: I had an easier time with this puzzle than I did with yesterday's, for whatever reason.|
|Jul-14-11|| ||sevenseaman: One of the simpler ones for a Thursday.
Rxh6 starts the landslide with Q to follow on h1.
|Jul-14-11|| ||rilkefan: The first move was a reflex - I only followed up 24...KxR though. I assume the alternate line 25...Ke7 goes something like 26.Rxf7+ Kxf7 27.Qh7+ Kf8 28.Rh1 Qc8 29.Qxg6 Ke7 30.Rh7+ Kd8 31.Qf6+.|
|Jul-14-11|| ||FSR: I have <extreme> difficulty believing that Black survives after 24.Rxh7 Kxh7 25.Qh1+ Kg8 26.Qh6 intending Rh1.|
|Jul-14-11|| ||FSR: <Gregor Samsa Mendel: I had an easier time with this puzzle than I did with yesterday's, for whatever reason.>|
Probably because Rxh7! clearly crushes Black in today's puzzle, whereas c5 in yesterday's puzzle was not an easy win unless Black played the ridiculous blunder ...Nc8??, as Fischer's opponent did. There, Black had many other tries that were much harder to refute.
|Jul-14-11|| ||Eduardo Leon: The first move should be obvious, even if only for the free pawn grab.|
But not 24...♔h7? 25.♕h1+ ♔g8 26.♕h6, with mate to follow: 26...♕e7 27.♖h1 f5 28.♕h8+ ♔f7 29.♖h7# or 26...f5 27.♕xg6+ ♔f8 28.♖h1 and 29.♖h8+. Instead, black attempts to take his king out of the danger zone.
Again, 25...♔e7? fails in view of 26.♖xf7+! ♔xf7 27.♕h7+ ♔f8 28.♖h1!, with mate to come soon: 28...♕d7 29.♕h8+ or 28...♕c8 29.♕xg6 ♔e7 30.♖h7+ ♔d8 31.♕f6+. But, in this variation, white should fall for 28.♕xg6?? ♕e7!, and black turns the tables.
Unfortunately for black, his last move drops more pawns.
<26.♕h6+ ♔e7 27.♕xg6 ♖f8 28.♕f6+>
Defending the f7 pawn with 28...♔e8 is futile: white will just play 29.♖bh1 and 30.♖h8, after which black will have to give up the f7 and e7 pawns to escape mate anyway.
|Jul-14-11|| ||TheBish: H P Garcia vs R Casafus, 1977|
White to play (24.?) "Medium"
It looks like there is only one weakness that White can attack, which is Black's king starting with h7.
24. Rxh7! Kxh7
If Black declines he loses very quickly after 24. Qh1.
25. Qh1+ Kg8 26. Qh6
Threatening 27. Rh1 and 28. Qh8#. Now:
A) 26...f5 27. gxf6 (Qxg6+ works too) Qd7 28. Rh1 Rf8 29. Qxg6+ and mate next.
B) 26...Qe7 27. Rh1 Qf8 28. Qh7#.
C) 26...f6 is the same as A).
Looks pretty hopeless for Black. I don't think it was too tough for a Thursday.
|Jul-14-11|| ||chesskidnate: black probably resigned in view of 28...Ke8 29.g6 which I believe wins blacks rook|
|Jul-14-11|| ||TheBish: Wow, for some reason (like I'm heading out the door) I missed the defense 24...Kf8, which loses more slowly.|
|Jul-14-11|| ||dzechiel: White to move (24?). Material even. "Medium."
The black king looks particularly vulnerable sitting all alone on the king's side of the board, with none of black's pieces able to aid in its defence.
So, this must be the standard "rook sac to open lines" theme, starting with...
To take, or not to take? It doesn't matter. Let's take.
24...Kxh7 25 Qh1+ Kg8 26 Qh6
This last move serves two purposes: 1) vacate h1 for the remaining white rook, and 2) keep the black king from making a run via f8.
OK, now black moves (it hardly matters, unless he tries something suicidal like 26...Qxg5), say...
26...f5 27 Rh1
The threat is now 28 Qh8+ Kf7 29 Rh7#. Is there anything black can do? Not really. Let's try
27...Kf7 28 Qh7+ Kf8 29 Qh8+ Ke7 30 Rh7#
Also 30 Qg7# is mate.
The position practically plays itself. Time to check.
Well, black made a better game out of it by not capturing. I shoulda looked at that line.
|Jul-14-11|| ||M.Hassan: "Medium" White to play 24.?
White has 2 Bishops for 2 Knights.
Removing the h7 pawn gives way to White to start an attack:
If the King does not accept Rook sac, he will be safer:
And White gains only one pawn.
Time to check
|Jul-14-11|| ||IRONCASTLEVINAY: Found the entire variation in just half minute.|
|Jul-14-11|| ||BiteByBits: ok at first i was looking at Bh6 but black doesnt have to accept.
24.Rxh7 (open file!) Kxh7 25.Qh1+ Kg7? 26.Qh6+ (white gets tempo for rook to come to h file) Kg8 27.Rh1 (threaten mate)f5? 28.Qh8+ Kf7 27.Rh7#
or 25. Qh1+ Kg8 26. Qh6 (block off escape) f5 27. Rh1 wins|
24. ...Kf8 (black king flees) 25. Qh1 Ke7 26. Qh6 builds up attack on h-file
|Jul-14-11|| ||morfishine: If the opening act <24.Rxh7> is followed by 24...Kxh7 then 25.Qh1+ Kg8 26.Qh6 threatening 27.Rh1 and Black is lost. |
While Black found a way to slightly extend the game (by declining the rook with 24...Kf8), I gather the main point of the puzzle was to find the opening move <24.Rxh7>
|Jul-14-11|| ||piltdown man: Not too difficult at all, when you are asked to find the best move. But, over the board, maybe another matter entirely.|
|Jul-14-11|| ||rhickma4: To me this looks easier than yesterday.
24.Rxh7 Kxh7 25.Qh1+ Kg8 26.Qh6
The threat is Rh1 followed by Qh8+ and Rh7+ if needed so Black needs to make an escape hole for his K
The only way I can see to do this is to play either 26...f5 or 26...f6
Both of these allow 27.gxf6, which now threatens 28.Qg7#
Black can try 28...Qd7 or 28...Rb7 but Rh1 still seems conclusive.
What if B doesn't take the R.
24...Kf8 trying to escape to safety.
Then 25.Qh1 Ke7 26.Rxf7+ Kxf7 27.Qh7+ Kf8 28.Rh1 still looks to win.
|Jul-14-11|| ||gofer: It is going to take Qd8 two moves to come to its king's rescue. So white can easily give mate in
<24 Rxh7 ...>
Black only has six sensible replies; Qe7, f5, f6, Nd7, Kxh7 and Kf8, but really the only option
is to run!
24 ... Qe7 25 Qh1 Qf8 26 Rh8+ Kg7 27 Qh6#/Qh7#
24 ... f5/f6 25 Qh1 anymove 26 Rh8+ Kg7/Kf7 27 Qh7#
24 ... Nd7 25 Qh1 Nf8 26 Rh8+ Kg7 27 Qh6#
24 ... Kxh7 25 Qh1+ Kg8 26 Qh6
26 ... f5/f6 27 gxf6 Qd7 28 Qxg6+ Qg7 (Kf8 29 Bh6+ mating or Kh8 Rh1+ mating) 29 Qxg7#
26 ... Qe7 27 Rh1 Qf8 28 Qh8#/Qh7#
26 ... Nd7 27 Rh1 Nf8 28 Qh8#
<24 ... Kf8>
<25 Qh1 ...>
25 ... Ke7 26 Rxf7+ Kxf7 27 Qh7+ Kf8 28 Rh1 Qd7 29 Qh8+ Kf7 (Ke7 Qf6#) 30 Qf6+ Kg8 31 Rh8#
<25 ... Qd7>
<26 Qh6+ Ke7>
<27 Qxg6 Kd8>
<28 Rxf7 ...>
Black has lost three pawns and is about to lose a fourth!
<28 ... Re7>
<29 Rxe7 Qxe7>
<30 Rh1 ...>
click for larger view
Okay now this may not be quite how things panned out, but it looks pretty straight forward to
me... ...Time to check.
|Jul-14-11|| ||cocker: If Black doesn't take the rook on move 24 he is surely lost, so it is reasonable to concentrate on 24 ... ♔xh7. As far as I'm concerned it's just a question of checking that the Black king cannot escape after for example 24 ... ♔xh7 25 ♕h1+ ♔g8 26 ♕h6 f5.|
|Jul-14-11|| ||agb2002: From a French Defense, perhaps.
White has the bishop pair for two knights.
Black would probably try the plan ... Nd7, ... Nf8 followed by ... b4.
The black castle is weak and defenseless. This invites to play 24.Rxh7:
A) 24... Kxh7 25.Qh1+ Kg8 (25... Kg7 26.Qh6+ Kg8 27.Rh1 f5(6) 28.Qh8+ Kf7 29.Rh7#) 26.Qh6 f6(5) 27.Qxg6+ Kf8 (27... Kh8 28.Rh1#) 28.Rh1
A.1) 28... Ke7 29.Qg7#.
A.2) 28... Qc8 29.Qf6+ Kg8 30.Rh8#.
A.3) 28... Qc(d)7 29.Qf6+ and 30.Rh8#.
A.4) 28... Qe7 29.Rh8#.
A.5) 28... Rb7 29.Rh8+ Ke7 30.Qg7#.
B) 24... Kf8 25.Qh1
B.1) 25... Ke7 26.Rxf7+ Kxf7 27.Qh7+ Kf8 28.Rh1 and mate soon.
B.2) 25... Qd7 26.Qh6+ Ke7 (26... Kg8 27.Rh8#) 27.Rxf7+ Kxf7 28.Qh7+ Kf8 29.Qh8+ Kf7 (29... Ke7 30.Qf6#) 30.Qf6+ Kg8 31.Rh1 Qh7 32.Rxh7 Kxh7 33.Qf7+ Kh8 34.Qxg6 + - [Q+2B+3P vs 2R+2N].
B.3) 25... Rb7 26.Qh6+ Ke7 27.Qxg6 + - [2B+2P vs 2N].
C) 24... Nd7 25.Qh1 Nf8 26.Rh8+ Kg7 27.Qh6#.
|Jul-14-11|| ||LIFE Master AJ: 24.RxP/KR7!
Black can thrash around a bit - but in the long run, there is no good defense - that I can see.
|Jul-14-11|| ||LIFE Master AJ: Call this one: "Entry down an open file."
About 10-15 years ago, one of my students played a game, he was about 11 at the time.
He went to a National Scholastic tournament. Later - he showed me a game where he had opened a file (due to an exchange) right towards his King.
He was shocked when I found a mate very rapidly - fortunately for him, his opponent had missed it. Anyone who has studied the games of Morphy know that open files on a King, (esp. one caught in the center); is the quickest way to get annihilated. [ See Morphy vs Duke Karl / Count Isouard, 1858. ]
|Jul-14-11|| ||David2009: H P Garcia vs R Casafus, 1977 White 24?|
24.Rxh7 looks dangerous: 24...Kxh7 25.Qh1+ Kg8 26.Qh6 f6 27.Rh1 fxe5 28.Bxe5 mates. No better is 26...f5 27.Rh1. Time
Black declines the sacrifice and loses differently. Here's the puzzle position:
click for larger view
Crafty EGT link: http://www.chessvideos.tv/endgame-t...
The EGT puts up a stout defence- enjoy finding the win!
Happy Bastille day!
|Jul-14-11|| ||LIFE Master AJ: <David2009> White wins with: 24.Rxh7! Kf8; 25.Qf3! Ke7; 26.Bxe6! Rf8; 27.Bg4! Rh8; 28.Rxh8! Qxh8; 29.e6! Nd2!?; 30.Bxd2, |
|Jul-14-11|| ||David2009: <LIFE Master AJ: <David2009> White wins with: 24.Rxh7! Kf8; 25.Qf3! Ke7; 26.Bxe6! Rf8; 27.Bg4! Rh8; 28.Rxh8! Qxh8; 29.e6! Nd2!?; 30.Bxd2 > Very convincing line. I tried to win with the game line 24.Rh7 Kf8 25.Qh1 which the EGT meets with 25...Qd7!
click for larger view
and White has work to do. EGT link: http://www.chessvideos.tv/endgame-t...
|Jul-14-11|| ||Patriot: 24.Rxh7 can almost be played with impunity. I say "almost" because 24...Kxh7 needs a little calculation and 24...f5 is the only critical candidate that I see.|
I spent 2 minutes on this even though 24.Rxh7 was my only candidate and I saw this candidate within a few seconds.
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