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|Feb-21-05|| ||patzer2: On the surface, today's puzzle solution 57. Rxe5+! Kxe5 58. Bg3+ looks like an easy double attack combination, leading to a decisive advantage.|
However, because of the possibility 57. Rxe5+! Kf6!?, as suggested by <notsodeepthough> and explored already by <whitergoes>, this Monday puzzle is suddenly not so easy.
Those who don't mind exploring the complexities of double Queen endgames may find the following analysis, using Fritz 8 to break-down the combination into some key variations, helpful:
(Fritz 8 prefers the more complex 58.b7! g1Q 59.b8Q Qg4+ 60.Kc1 (60.Re2?? Qxe2+ 61.Kc1 Qxe1#) 60...Qf4+ 61.Kb1! (61.Kd1? Qfa4+! 62.Qxa4 Qxa4+ 63.Kc1 Qc2#) 61...Qxe5 (61...Qg4 62.Rxe6+ Qdxe6 (62...Qgxe6 63.Qxh2 Qxa6 64.Qh6+ Ke7 65.Qxa6 ) 63.Bc3+ Kg5 64.Qd8+ Kf5 65.Qf6+ Qxf6 66.Qxf6#) 62.Qxe5+ Kxe5 63.Bg3+ Kf5 64.Bxh2 )
a) 59.Kd2?? Kxe5 ;
b) 59.Ke2?? Kxe5 60.b7 Rb1 61.Qa5+ (61.Qa8 Rb2+ 62.Ke1 Rxb7–+) 61...Kf6 62.Bh4+ Kg7 (62...Kf7 63.Qh5+ Kg7 64.Qg5+ Kh7 65.Qh5+ Kg7 (65...Kg8 66.Qg5+ Qg7?? (66...Kh7=) 67.Qxg7+ Kxg7–+) 66.Qg5+ Kh7 67.Qh5+) 63.Qg5+ Kh8 64.Qh5+ Kg7= (with a draw by perpetual check);
c) 59.Kc2?? Kxe5 ;
59...Qd5 60.Qa1+!! Kg6 (the possibility
60...e5 was explored in <whithergoes'> post) 61.Qd4 Qh5+ 62.Kc2 Rxe1 63.Bxe1 Qe2+ 64.Bd2 e5 65.Qd6+ Kf7 66.Qc5 e4 67.dxe4 Qxe4+ 68.Kb2 Ke6 69.Be3 Qf3 70.Qb5! Qf1 (70...Qxe3?? 71.Qe8+) 71.Qc6+ Ke7 72.Qc5+ Ke6 73.b7 Qe2+ 74.Qc2 Qxe3 75.b8Q g1Q 76.Qbc8+ Ke7 77.Qh7+ Kd6 78.Qcc7+ Kd5 79.Qf5+ Kd4 80.Qcc5#]
|Feb-21-05|| ||yoozum: I saw this one after literally looking at it for 2 seconds. |
|Feb-21-05|| ||notsodeepthought: <patzer2> Thanks, that was very helpful, and it answers my question... |
|Feb-21-05|| ||kevin86: The solution was easy-the exchange sac-followed by the fork,and taking of the rook at g1. The GAME becomes problematic if black refuses the sac.White seems to win,but it is far from cut and dried. |
|Feb-21-05|| ||your brilliance: I saw the line in the game, but the complications of ...Kf6 and other ways of declining the rook, followed by queening the KN pawn would appear to offer black more of a fight. Because of all this, I wasn't really satisfied I had solved it. |
|Feb-21-05|| ||Marco65: After 57...Kf6 58.Bf2 there are better possibilities for Black other than 58...Rh1+ in my opinion. What other think of 58...Qg7 for instance? E.g. 59.Re1 Qg4+ 60.Kc1 [60.Kc2(d2) g1=Q 61.Rxg1 Rxf2+] Qf4+ 61.Be3 Qxe3+ 62.Rxe3 g1=Q+ |
|Feb-21-05|| ||davidwill: After59....Kf6 60.Bxh2 Qd4 61.b7 f1=Q+
62.BxQ QxB+ 63Kc2 and white finds it next to imposible to avoid perpetual check so i think perhaps this is a draw ?
|Feb-21-05|| ||patzer2: <notsodeepthought> You're welcome. Everytime I think I know a little something about Chess tactics, possibilities like 57...Kf6!? bring me quickly back to reality. I still have much to learn about the almost infiite complexities and mysteries of what Lasker called "our little game!" |
<Marco65> As a practical try in a lost position, your 58...Qg7!? might be worth a try. However, 59. Rxe6+! preserves White's win without too much difficulty:
58...Qg7!? 59.Rxe6+! Kxe6 (59...Kf5 60.Bg1! Qc3 61.Bxh2 ) 60.b7+ Kf5 61.Qb5+ Kg6 62.Qc6+ Kh5 (62...Kh7 63.Qe4+ Qg6 64.Qxg6+ Kxg6 65.b8Q ) 63.Qf3+ Kg6 64.Qg3+ Kf7 65.Qxg7+ Kxg7 66.b8Q
|Feb-21-05|| ||Rank Amateur: My confusion starts farther back. After 51 ... Bb6, why doesn't white take the bishop? |
|Feb-21-05|| ||patzer2: <Davidwill> Could you recheck the position and the move numbers in your analysis? Also take look at Fritz 8's 57...Kf6 58.b7! and see if you still think Black can force a draw. |
|Feb-21-05|| ||patzer2: <Rank Amateur> Unless there was a score sheet or recording error, it would appear 51. Kc2?? (allowing 51...Rh2+! 52. Bd2 Be3 ) and 51...Bd6?? (allowing 52. Qxb6 Rh2+ 53. Kc3 ) were an exchange of Blunders. |
|Feb-21-05|| ||Victor A N Gustavo: Why not 46...Qxd3+? |
|Feb-21-05|| ||MiCrooks: As it turns out, it is really not ALL that complicated. The lines involved are pretty much forced. Kf6, though an interesting try is really no better, and probably a bit worse than just taking the Rook. And there is no problem avoid perpetual checks here. It will take a while to reposition things (move King up the board over towards the Queen and pawn and in some lines drop the Queen onto the b-file to support pushing the pawn in. But there is a reason that Pogorelov resigned. He saw he had no chance of holding. |
|Feb-21-05|| ||Garland356: Did I miss something here. I'm an amature player and this is hardly a puzzle. Is there more to this than a simple sacrifice? |
|Feb-21-05|| ||chessgames.com: This puzzle is intended to be extremely easy, but we never considered the complications arising from 57...Kf6 when selecting it. We're glad that the solution still stands up to scrutiny.|
Garland, you've been here long enough to know that Monday puzzles are intended to be the easiest puzzles of all, by mid-week the puzzles become challenging and on the weekend they are very difficult indeed.
|Feb-21-05|| ||Ezzy: You are all barking up the wrong tree.This game has no interest in the simple combination at the end. It is about the dozen (yes 12)chances black had too win, between moves 41 and 55!! 41..Rc6 game over! 42..Rc6 game over! 44..Rc6 game over! 46..Qxd3+ kaput!! 47..Qxd3+ kaput!! 48..Qxd3+ still kaput!! 49..Qxd3+(please please move me to d3)the queen is actually talking, at this point! 51..Rh2 lets get a coffee.52..Rh2 lets sign the score sheets 54..Qd5+ lets go home and 55..Qd5+ or 55..Qd6 i'm going to hang myself after i have analysed this game. The dirty dozen and Les Miserables come to mind.(the game was played in Paris). |
|Feb-21-05|| ||Eric Xanthus: <davidleetw> has twice been shot down improperly for his question. Both posters misunderstood him, as far as I can tell. After 56. Ra5, he suggests 56...Qd4. This does not leave the Queen en prise as two others have suggested. So I will repeat his question for him--why not 56...Qd4?|
After 57. Bxg3, it looks like black can begin a barrage of checks starting with 57...Qg1+, but I can't tell if that leads anywhere. Can someone with better insight clear that up?
|Feb-22-05|| ||offramp: I would like to see the winner's notes to this game... Or does he just shut his eyes and shake his head when he thinks about it? |
|Feb-22-05|| ||soberknight: <davidleetw> 56...Qd4 is a reasonable try for Black. When I said it lost the queen, I wasn't looking carefully. Play might continue 57 b7 g2 58 g8Q b1Q (Black cannot capture on g8 because his e5-bishop is pinned by the a5-rook) 59 Qf8+ Kg5 60 Qg8+ Kh4 (...Kf5 61 Qaxe6+) 61 Qxg1 Qxg1 62 Rxe5 wins a bishop, it appears to me. |
|Feb-22-05|| ||soberknight: Actually, black has 56... Qd4 57 b7 Qg4+ 58 Kc1 Qe2, threatening mate at e1 and c2. 59 Rxe5+ Qxe5 (59...Kxe5 60 b8Q+ looks good for White) 60 Qa5 (pins the queen and threatens b8Q) ...Qxa5 61 Bxa5 g2 (...Rh8 62 Bc7) 62 Bb6 Rh8 63 Ba7 g1Q+ 64 Bxg1 Rb8 and the result looks like a draw. Unless someone sees an improvement for White on move 57 or 60, it looks like we have a draw. |
|Feb-22-05|| ||Marco65: <patzer2> Thanks a lot, your 59.Rxe6+! definitely refutes the attempt 57...Kf6 58.Bf2 Qg7? It's always sad to me to find out how many times I miss the best move. Better in chessgames than in a real game anyway!|
I'm still trying to prove 58.Bf2 is weak, and Fritz's 58.b7 is the only try for White. So what about 57...Kf6 58.Bf2 Qc6 ? b6 is (relatively) pinned, and Black is threatening 59... g1=Q+ 60.Bxg1 Qc2+ 61.Ke1 Qc1# If 59.Re2 Qf3 seems strong to me.
|Feb-22-05|| ||patzer2: <Marco65:...So what about 57...Kf6 58.Bf2 Qc6?> After 57...Kf6 58.Bf2 Qc6, White wins with either 59. Bg1! or 59. Qa1!:|
57...Kf6 58.Bf2 Qc6 59.Bg1! [59.Qa1! g1Q+ 60.Re1+ Ke7 (60...Kf7 61.Rxg1 Rxf2 62.Qa7+ Kf8 63.Qb8+ Ke7 64.Rg7+ Rf7 65.Rxf7+ Kxf7 66.Qc7+ )] 59...Rh1 60.Re1 Qf3+ 61.Kc2 Rxg1 62.Qa1+! is an essential intermezzo (avoiding 62.Rxg1?? Qf2+ –+) 62...Ke7 63.Rxg1
|Feb-22-05|| ||patzer2: <soberknight> I also like the defensive move 56...Qd4! My look with Fritz 8 indicates it is Black's last chance to equalize:|
56...Qd4! forces the reply 57.Qc4! due to the ugly alternatives (57.b7?? Qg4+ 58.Kc1 Qf4+ 59.Kd1 Qf3+ 60.Kc1 Qe3+ 61.Kd1 Qe2+ 62.Kc1 Qc2#) 57...Qe3 58.d4 Qf3+ 59.Kc1 Qf4+ 60.Kd1 (60.Kb1?? Qe4+ 61.Ka1 Qxe1+ 62.Qc1 Qxc1#) 60...Qf3+ 61.Kc1 Qe3+ 62.Kd1 Qf3 forces a draw by threefold repetition.
|Feb-22-05|| ||Marco65: <patzer2> I see, thanks |
|Feb-22-05|| ||soberknight: <patzer2> Thanks for the correction. I was doing the analysis "blindfold", just by looking at the board, late at night, which is hard. |
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