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| Oct-29-11 | | CHESSTTCAMPS: Clearly this is "kill or be killed" - black threatens checkmate on a2 and there is no passive defense available, so white must hammer away at the black king with the major pieces until checkmate or a forced exchange of the the black queen. In fact, either of these outcomes can arise, so long as white starts with recognition of a basic checkmate pattern. 29.Qxg7+! was my first and only candidate. The queen can't be accepted, but the alternative is a king hunt on an open board where black's major pieces offer limited defense. A) 29... Kxg7 30.Bxf6+ Kg1/f1 31.Rh8#
B) 29... Ke7 30.Bc5+! Qxc5 (Ke6 31.Qxf6#) 31.Qxf6+ Ke8 32.Rh8+ Qf8 33.Rxf8+ Kxf8 34.Qh8+ 1-0 C) 29... Ke8 30.Rh8+ Kd7 31.Qxf7+ Kd6 (Kc6 32.Rxc8+ followed by 33.Rxc2 1-0) 32.Bc5+! Kc6 (Kxc5 33.Rxc8+) 33.Rxc8+ Kb5 34.Qb7+ Ka5 35.Bb4# C.1) 30... Ke7 31.Qxf6+ Kd7 32.Qxf7+ transposes back to the main C line. C.2) 31... Re7 32.Qd5+ (Bc5+?? Qxd1#) Kc7 33.Rxc8+ Kxc8 34.Qc5+ Qxc5+ (Rc7 35.Qxc2 Rxc2 36.gxf6 is equally hopeless for black) 35.Bxc5 Re5! 36.gxf6! Rxc5 37.Rf1 and the f-pawn promotion wins. C.3) 32... Ke5 33.Qxf6+ Ke4 34.Rh4+ Kf3 35.Qf4#
Time for review.... |
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| Oct-29-11 | | Patriot: 29.Qxg7+ <press clock> That's it! Black threatens 29...Qxa2# so OTB this would be an EASY decision. 29...Kxg7 30.Bxf6+ Kf8/Kg8 31.Rh8#. This shows it isn't time to resign and whether it wins, loses, or draws it's the only move white has. There are 3 other checks (Bc5+, Qh8+, Qg8+) and they all lose quickly. So in a game the move can be played and the rest can be resolved with each new position. As a puzzle, I went ahead and did a little further calculations just to see what I could find: 29...Ke8 30.Rh8+ Kd7 (30...Ke7 31.Qxf6+ Kd7 32.Qxf7+ is similar) 31.Qxf7+ Re7 (31...Kd6 32.Bc5++  ) 32.Qd5+ Kc7 33.Rxc8+ Kxc8 34.Qc4+ (trading into a winning endgame). 29...Ke7 30.Qxf6+ Kd7 31.Be3+ Re2 (31...Kc7 32.Qb6#) 32.Rxe2+ Qxe2 33.Bxe2 |
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| Oct-29-11 | | Patriot: In the last line I meant 31...Rd2 (not 31...Re2) 32.Rxd2+ Qxd2 33.Bxd2 |
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| Oct-29-11 | | CHESSTTCAMPS: For those who want to play the puzzle position against Crafty EGT, here is the link: http://www.chessvideos.tv/endgame-t... |
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| Oct-29-11 | | Memethecat: <29Qxg7+> seems pretty obvious, if black takes.. <29...Kxg7. 30Bxf6+ K~. 31Rh8#> if the K runs... A Q, 2Rs & B with an open board give it no chance, I've worked out 1 winning line trying to make the best moves for black <29...Ke8. 30Rh8+ Kd7. 31Qxf7+ Re7. 32Qd5+ Kc7. 33Be5+ fxe5 34Qd6+ Kb7 35Qxe7+ Ka8 36Rxc8+ Qxc8 37Rd8 Qxd8 38Qxd8+> but I'm sure the regulars can nail the quickest/most economical line. |
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| Oct-29-11 | | Sularus: wow i got a Saturday in less than 10 seconds! |
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| Oct-29-11 | | kevin86: I pulled a Texas Rangers and come close to the sokution: My move was Qh8+ ouch!! |
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| Oct-29-11 | | Marmot PFL: I saw the game played so I knew the ending, which wasn't too subtle in any event. Black misses a much trickier win on move 27(Re5). Neither player realized this until someone pointed it out after the game. |
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| Oct-29-11 | | sevenseaman: < kevin86: I pulled a Texas Rangers and come close to the sokution: My move was Qh8+ ouch!!> Do not be disheartened Kevin. OTB your move has a good chance of winning, may be as high as 50%. Opponents too can make mistakes. If it goes like this you win. <29. Qh8+ Bxh8 30. Rxh8+ Kg7 31. Bxf6#> It has to be baseball; what did the <Rangers> do wrong? |
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| Oct-29-11 | | rapidcitychess: <sevenseaman> Two days ago they lost a game when up 4-7 in the 8th inning. |
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| Oct-29-11 | | EXIDE: A bit easy for a Friday puzzle? Maybe I am not seeing something there. |
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| Oct-29-11 | | alachabre: I studied this position for a bit, working out an invasion of the Black position, and found a back rank mate possibility based on file and diagnonal control of the square h8. Critically, I failed to notice at first that Black threatens mate in one on a2. Once that urgency is factored in, either a quick strike for mate is necessary, or some way found to defend the a2 square. Given the dynamic imbalance, the choice appears to be, attack at all cost, and take advantage of the weakness on h8. 29. Qxg7+, given the vulnerability on the back rank.
30. ... Kxg7, obvious but losing immediately.
31. Bxf6+ K-moves and Rh8#
So,
29. ... Ke7
30. Qxf6+, and the good moves are not hard to find from here, 29. ... Ke8
30. Rh8+, now White must move precisely, as his back rank is severely weakened by the absence of this rook. 30. ... Kd7
31. Qxf7+ Re7
32. Qd5+ Kc7
At this point, White is sufficiently dominant to be able to clean up material, or perhaps even weave a mating net if Black's play is uneven. There's a lot of work left to be done, but it should be easy for a player with good skill. |
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| Oct-29-11 | | sevenseaman: <Marmot PFL: Black misses a much trickier win on move 27(Re5). Neither player realized this until someone pointed it out after the game.> Thats right Marmot. Black has an assured win after <27...Re5>. It scuttles White's plan. Anyone wishing to try out the impact of <27...Re5> on the result can use this Crafty link, with White on move. Crafty defends with <27...Re5>. http://www.chessvideos.tv/endgame-t... |
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Oct-29-11
 | | chrisowen: Deja vu strikes again elbow g7 off piece de resistance cold Shower it good game 27 re2 damned if I know why getting too Hasty rankle mate in one yippee but watch BF RR I am the very Model kurfew again bet squeeze this time light breathes fire Ahah a tot see chew baccarat where you there? |
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| Oct-29-11 | | stst: one possible variation:
29.QxB+
IF (A)29...KxQ, 30.BxP+ Kf8 or Kg8, 31.Rh8#
IF (B)29...Ke8
30.Rh8+ Kd7
31.Qxf7+ Kd6
32.Qxf6+ Kd5
33.Qf7+ Kd6
34.Bc5 dis dbl+ KxB
35.Rxc8+ Kb6
36.RxQ RxR
37.Qxg6+ etc |
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| Oct-29-11 | | morfishine: Black missed <27...Re5> Fascinating |
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Oct-29-11
 | | Jimfromprovidence: 27…Re5 is the real deal. Superficially, it interferes with the text threat beginning with 28 Qh7+ by occupying the a1-h8 diagonal at that c5 square. What makes the move work is that the rook is immune to capture by the bishop. 28 Bxe5? loses the bishop’s protection of b2. In order to avoid mate, that move forces, after 28…fxe5, 29 Qxc8+ Qxc8. 
click for larger viewSo, if after 27…Re5 28 Qh7+ still follows, then 28...Kf8, below is just fine for black.
click for larger viewIf 29 gxf6 Bxf6 follows, below, black has the threat 30…Rh5!, (winning the queen) that white has to address.
click for larger view |
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| Oct-29-11 | | CHESSTTCAMPS: Yep, finding 27... Re5!! would be a real Sunday level challenge. It requires full recognition of white's threat and finding a move that is not forcing. |
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| Oct-29-11 | | newton296: pretty much kill or be killed here. threat of Qxa2++ forces white to sac the Q and go for a mate. I was expecting to take about 10-15 minutes for a saturday puzzle, but nailed it in about 2 minutes. |
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| Oct-29-11 | | sevenseaman: <27...Re5> is one of the most counter-intuitive moves I've seen. If one is not receptive one is very apt to laugh away the suggestion. |
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| Oct-29-11 | | crippledpawn: 29.Qxg7+ Ke8 30.Rh8+ Ke7 31.Qxf6+ Kd7 32.Qxf7+ Kd6 33.Bc5+ Kxc5 34.Rxc8+ Kb6 35.Rd6+ Qc6
36.Rdxc6+ Kb5 37.Qc4+ Ka5
(37...Ka5 38.Qxe2 Kb4 39.Qc4+ Ka5 40.Ra8#)
38.Ra8#
1-0
Here's what I saw,alternate mate in 3 if you want to take the rook also.
Kxg7 lead to a quick mate with the bishop and rook. i.e. Bxf6+, Kg8 or Kf8, Rh8++ mate. |
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| Oct-29-11 | | ounos: What the...?!? Is this a Monday? Must be a mix up |
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| Oct-31-11 | | Lykos: After 29. Qxg7+
blacks have two possibilities:
Ke8 or Ke7. In both case the black
king can be forced to c6.
Ke8
Rh8+ Kd7
Be5+! c7 and d6 are blocked.
Rd2
Qxf7+ Kc6
Rxc8+
or
Ke7
Qxf6+ Kd7
Be5+ Rd2
Qxf7+ Kc6
Rc1 .
So Be5 is substantial here. |
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| Aug-18-14 | | Ke2: the hard part is seeing this before you play 26. g5... :) |
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Jan-06-21
 | | FSR: Another Finegold game that finished with a queen sac on move 29 that, had Black continued, would have forced a mate with a bishop on f6 and a rook on h8: B Finegold vs Balashov, 1992. But Finegold won that one. |
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