< Earlier Kibitzing · PAGE 2 OF 3 ·
|Oct-10-12|| ||therevolver17: 29.Bd4! and if 29..Qxd4 30.Rxd4 and black cannot take queen because of Rd8 and mate in the next move.
If 29..Qxe2 30.Rxg7+ Kh8 31.Rxg6+ Re5 (31..Qe5 32.Bxe5+) 32.Rf8#|
|Oct-10-12|| ||therevolver17: I want to thank my cup of coffee for helping me to solve correctly these puzzles.|
|Oct-10-12|| ||morfishine: Both sides have pluses to their position. Black rook and Queen
control the e-file while the other rook on <c3> lends weight to the
pin on Whites DSB. Black, though down a piece, is up a pawn and
poised to recover the piece.
However, since White has a rook on the seventh rank while his
other rook controls the f-file, his pieces are positioned for a
direct attack on the Black King. White also has a piece to give
White's pluses outweigh Black's
<29.Bd4> skewering the Black Queen and Rook while targeting <g7>
wins on the spot:
(1) <29...Qxd4+> loses instantly to 30.Rxd4 Rxe2 31.Rd8+ Re8
(2) <29...Qxe2> allows 30.Rg7+ Kh8 and White mates with
(2a) If <31...Re5> then 32.Rf8 mate....
(2b) Meanwhilte <31...Qe5> allows the spectacular
32.Rf8+ Rxf8 33.Bxe5+ Rf6 34.Bxf6 mate
Now thats a pretty picture:
click for larger view
|Oct-10-12|| ||whiteshark: Is it a kind of <cross pin> of ♕d4 and ♙g7 combined with backrank threats?|
|Oct-10-12|| ||zb2cr: 29. Bd4! presents Black with a bunch of poor choices:|
29. ... Qxd4+; 30. Rxd4, Rxe2; 31. Rd8+ and mate next move.
29. ... Qxe2; 30. Rxg7+, Kh8; 31. Rxg6+ and no matter whether Black plays 31. ... Re5; 32. Rf8# or 31. ... Qe5; 32. Bxe5+, Rxe5; 33. Rf8# it's curtains.
|Oct-10-12|| ||bengalcat47: The bishop move to d4 attacking both queen and rook is similar to a move in checkers known as "the breeches," whedre a king is moved into a space in between 2 opposing pieces,, with the result being that one of those 2 pieces must then be captured.|
|Oct-10-12|| ||sushijunkie: Why did this take me so long to get?!?|
|Oct-10-12|| ||pogotheclown: I saw Bd4 straightaway but I interposed an unneccessary move to get mate. I went Bd4 Qxe2 Rxg7+ Kh8 and then I thought I had to attract the rook to F8 so I continued Rf8+ Rxf8 and then Rxg6 dis+. When I played thru I saw it wasn't necessary, just like the extra c in neccessary, lol.|
|Oct-10-12|| ||Razgriz: Bd4. The only forced mate.|
|Oct-10-12|| ||CHESSTTCAMPS: White is up a piece, but black is in position to regain it with the pin/triple attack on e3. Nonetheless, white has the winning hand with black's vulnerable king position and a potent rook on the 7th available to coordinate with the "lost" bishop.|
29.Bd4!, a "sham" queen sac forces quick mate or immediate resignation:
A) 29... Qxe2 30.Rxg7+ Kh8 31.Rxg6+ Qe5 (Re5 32.Rf8#) 32.Bxe5+ Rxe5 33.Rf8#
B) 29... Qxd4+ 30.Rxd4 Rxe2 31.Rd8+ Re8 32.Rxe8#
B.1) 30... Rcc8 31.Qf3 Rf8 32.Qd5+ Kh8 33.Rxf8+ Rxf8 34.Qf7 Rg8 35.Re7 h6 (otherwise 36.Re8 mates next) 36.Qxg6 b6 37.b4 b5 38.Kh2 R moves (a5 39.Qxa5#) 39.Qxg7# is one defense that delays mate as many moves as possible.
C) 29... Re3 30.Qxe3 Qxe3+ 31.Bxe3 h5 32.Bd4 Kh7 33.Bxg7 Re4 (otherwise 34.Rf4 g5 35.Rf6 Re1+ 36.Kf2 Re2+ 37.Kxe2 Kg8 38.Rh6 any 39.Rh8#) 34.Rf8 g5 35.g4 Re1+ 36.Kf2 Re2+ 37.Kxe2 Kg6 38.Bh8 any 39.Rf6# is another hangnail defense.
Time for review...
|Oct-10-12|| ||beenthere240: 27...hxg6 is better (capture toward the center)|
|Oct-10-12|| ||Castleinthesky: 1/2 credit for me. I saw Bd4, but only worked out winning a piece and a number of pawns, I didn't see the mate.|
|Oct-10-12|| ||James D Flynn: White is up a piece for a pawn but his B on e3 is pinned and 3 times attacked and once defended. However, Blacks back rank looks vulnerable, he probably just moved the R on c3 to attack that B because 28,,,, Q xe3 could be answered by 29,Qxe3 Rxe3 30.Rd8 leads to mate.
That vulnerability can now be exploited by 29.Bd4 because Qxe4+ 30.Rxd4 Rxe2 31.Rd8 Re8 32.Rxe8# and 29……Qxe2 30.Rxg7+ Kh8 31.Rxg6+ Qe5 32.Bxe5 Rxe5 33.Rd8+ Re8 34.Rxe8#. If Black tries 29…Qb8 30.Rxg7+ still mates so 29.Bd4 Qxd4+ 20.Rxd4 R3e8 avoids the immediate mate but leaves White up a Q for a pawn.|
|Oct-10-12|| ||inmate5: A pity that Zagorskis did not conclude with 31. Rf8. He must have been in horrible time trouble - 31. Rg6 is a blunder, from an aesthetic point of view ;)|
|Oct-10-12|| ||paulalbert: Saw Bd4 right away and that Rxg7ch is the killer after Qxe2, but saw Qxd4 is check so had to make sure all the variations worked. Instructive illustration of how to exploit back rank weakness.|
|Oct-10-12|| ||kevin86: Forget about winning the queen! White will mate with the rook at f8,following the diagonal checks.|
|Oct-10-12|| ||ajax333221: <inmate5> I think 31.Rf8 takes more time to mate|
|Oct-10-12|| ||inmate5: <ajax333221> That's correct, 31.Rf8 takes one move longer than 31.Rg6 - at least if you count kamikaze interposition as a move, otherwise it is one move shorter ;)|
I like 31.Rf8 (today) because of its simplicity (it frees the way for the bishop), because of its shock effect and because of the large material deficiency. But there should be some minus points as well as it does take one move longer.
|Oct-10-12|| ||stst: The Black Q & R are in position ready for a fork by a B, thus
31.Re7 dis+ Kg8
34.Ra1 etc ... the rest should be easy for W, up one B.
|Oct-10-12|| ||stst: oops, miss the easy kill Rxg6 in between!!|
|Oct-10-12|| ||Once: The problem with 31. Rf8 from an aesthetic point of view is that it uses exactly the same mating technique as the immediate 31. Rxg6+. After 31. Rf8 Rxf8, white has no choice other than to play 32. Rxg6+|
Instead of showering the board with gold coins, the onlookers are more likely to grumble that white had overlooked the clean mate when it was first possible, and only saw it one move later.
|Oct-10-12|| ||inmate5: <once> Well, what can I say? I don't want grumbling onlookers, so I think I have no other choice than to adapt my formula for beauty.|
On the other hand, I do agree that the mating methods are similar, but not identical. Both ways make misuse of the overworked black rook on e8 that at the same time has to defend f8 and the queen on e5. But the move order is different: White first takes the queen and then gives mate on f8, or white first checks on f8 and then takes the queen. Unfortunately, in the latter case, the black rook ends up on f8 from where it can interpose on f6, which makes the mating line one move longer and the onlookers grumble.
I also would like to make misuse of the opportunity to say that I always read your posts with much pleasure. Once, you should bundle them into a POTD chess calendar.
|Oct-10-12|| ||David2009: Quick-look today: I spotted Bd4 etc. (the game variation) and left it there (looking at the game without composing a Notepad analysis). I was curious to know how Crafty End Game Trainer would defend. Here's the puzzle position
click for larger view
and link to the EGT: http://www.chessvideos.tv/endgame-t....
Against me, the resilient robot postpones mate for 18 moves starting 29.Bd4 Qxd4+ 30.Rxd4 Rcc8 31.Qb5 Kh8 32.Rdf4 Rg8 33.Qxb7 h6 34.Qxc8 etc. - can you find a faster mate?
|Oct-10-12|| ||agb2002: White has a bishop for a pawn.
Black threatens 29... Q(R)xe3.
A simple idea is to counterattack with 29.Bd4:
A) 29... Qxe2 30.Rxg7+ Kh8 31.Rxg6+ Qe5 (31... Re5 32.Rf8#) 32.Bxe5+ Rxe5 33.Rf8#.
B) 29... Qxd4+ 30.Rxd4 + - [Q vs P] (30... Rxe2 31.Rd8+ Re8 32.Rxe8#).
C) 29... Qa5 30.Qxe8#.
D) 29... Re3 30.Qxe3 + -.
E) 29... Qb8 30.Rxg7+ Kh8 31.Rxg6+ and mate in two.
|Oct-10-12|| ||db5500: Can black defend himsefl with 29.... Re7?|
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