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| Jul-13-07 | | openingspecialist: MAJ Qg5! was the move I was hoping someone would let me reviel crashing their incorrect supposedly drawing line. I think that we did the problem the hard way but we would both have won our games whereas only 2 or 3 people in here would have won with the best line. No getting 2 moves does not count. I could tell anyone the first 2 lines in any puzzle but you need to prove your win or draw in some cases. |
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| Jul-13-07 | | mkrk17: I really appreciate all you guys throwing in so much analysis. As for me, its start of the work-day when the puzzle comes in. Hence, i have to secretly look at the position and think of some answer. Anyway..keep going guys..
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| Jul-13-07 | | Tactic101: Ouch.... I saw Rxd5 alright, but I thought of Re6 next. Feel stupid this time..... of course black has Re8!. Blast......... |
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Jul-13-07
 | | tarek1: Actually, on Re6, black can play Re8 and we can't take the queen, because of the the mate ... so Ne7 immediately is necessary... missed that :(
Thanks crafty |
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| Jul-13-07 | | Tactic101: Yeah, gotta be more careful........ :( |
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| Jul-13-07 | | get Reti: I didn't get this one. There's so many possibilities in the open position for both sides after Rxd5 that it's hard to analyze. I would have never seen Qh7. |
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| Jul-13-07 | | Crowaholic: Got it... eventually. The first moves were easy to see but as usual verification was more difficult. I found the sequence up to 29. Qxg7+ (along with some other winning lines), where I stopped searching because I considered the +3 pawns endgame advantage to be compelling. But the alternative move 27. ..Kf7!? left me puzzled. Does White have nothing better than a forced repetition here? I found 28. Nf5 Qg6 quickly but thought 29. Re7+, the only move that could possibly win, was actually losing so I analyzed some other lines (to no avail) until I noticed that it does win - 29. Qxe7 Nxe7 wins the exchange as seen in the game and 29. ..Kf8 30. Rxg7 is absolutely lethal. Now it seems totally obvious, but hindsight's 20/20.
By the way, Rustemov seems to be a stubborn player. He's 3, 4, 5 then 6 pawns down in the endgame and just plays on... until he notices that he'll lose one of his rooks for a pawn with the next queen fork 47. ..Kd3 48. Qc2+. Maybe Glek had time trouble and he tried to exploit on this? |
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| Jul-13-07 | | Crowaholic: <willyfly: in fact 25...Kf7 seemed to be the square that caused Black the most trouble so I was surprised to see that he moved there> I don't think so. I analyzed all of Black's moves at this point and 25. ..Kf8 26. Re6 Qxe7 27. Rxe7 Kxe7 28. Qxg7+ transposes into the text line. 26. ..Qd7?? 27. Qf5+ Bf6 28. Qxf6+ Ke8 29. Ng6+ Qe7 30. Rxe7# is worse. 25. ..Kh8 26. Re6 and now White is threatening 27. Qh5+ Bh6 28. Qxh6# so 26. ..Qxe6 27. Qxe6 Kh7 28. Qg6+ Kh8 29. Qh5+ Bh6 30. Qxh6# 25. ..Kh7 26. Re6 is largely the same as ..Kh8.
And then there is 25. ..Qxe7 26. Rxe7 with quick mate, obviously. To recap, Kf7 is about equal to Kf8 and if the king goes to the h file, that was his last mistake. |
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| Jul-13-07 | | Crowaholic: One correction: As usual, my computer is smarter than me and found 25. ..Kh8 26. Re6 Qxe6 27. Qxe6 Rd6! 28. Qxd6 Re8!
and now
29. Qe6 is countered with ..Rxe7 30. Qxe7, dead losing, for sure, but the mate with Qh+ and Qxh6# is not possible. The computer does note, however, that it's +#10 after 28. ..Re8, e.g. 29. f5 Rxe7 30. Qxe7 Kg8 31. f6 Bxf6 32. Qxf6 b3 33. h4 etc. |
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| Jul-13-07 | | JG27Pyth: Isn't 27...♔f7 black's best defense for draw? ... Am I missing some mate that black's 27...♕xe7 defends? |
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| Jul-13-07 | | MostlyAverageJoe: <skemup: 25.fxe6+ and the black loses badly... can you show the line?> 24. f5 Kf7?? 25. fxe6+ results in this (black to move): 
click for larger viewWhere does the king go now?
... Kf6 26. Rf1, mate soon
... Kg8 26. Rxe5 Qxe5 27. Ne7+
... Ke8 26. Nf4 threatens mate after Qh5
so he has to take the pawn, lose queen , and get anihillated: ... Bxe6 26. Qf3+! Kxg6 27. Rxd6
and you have this (black to move and chose which piece to lose first :-): 
click for larger view |
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| Jul-13-07 | | Halldor: Got this until Black's 27th move where I looked at 27... Kf7 28. Nf5 and Re7+ which seems very good for White. Just thought that the text, 27... QxN, wasn't a problem for White. Anyway, think I solved this, 5:5 so far - wow! |
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| Jul-13-07 | | willyfly: <Crowaholic> After 24 ♖xd5 exd5 25 ♘e7+ then 25...♔h8 or ♔h7 and I played 26 ♕h5+ which is refuted by interposing the Black ♕. Because I failed to see 26 ♖e6 to move the ♕ off the 6th rank. same with 25...♔f8 26 ♕f5+ and the Black ♕ interposes
That's why I said 25...♔f7 was worst for Black because now 26 ♕h5+ and the Black ♕ can't interpose. If 26...♔f6 27 ♕g6# so 26...♔f8 and then I looked at 27 ♘g6+ and completely missed 27 ♕h7 and all the while I had a nagging feeling that I was on the wrong track to start with. All in all - not such a bad day for me in puzzleworld. After the puzzle it was still a long game with lots of possible variations. I'm usually happy if the solution is something I at least considered for a couple of moves. So I'm happy. |
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| Jul-13-07 | | kevin86: Is this some sort of a record? A queen and SIX pawns vs two rooks-WOW!!
White was in a little danger of last row mate threats on the back row but black was never able to even threaten one because he was too busy fending off queen and pawn moves.
This week's theme seems to be forks-there have been more forks this week than at a formal dinner. |
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| Jul-13-07 | | Crowaholic: <willyfly: After 24 Rxd5 exd5 25 Ne7+ then 25...Kh8 or Kh7 and I played 26 Qh5+ which is refuted by interposing the Black Q.> That's the Zwischenzug problem, I had a lot of trouble solving some recent puzzles because I failed to see the proper Zwischenzug. One day I will make a checklist to use whenever I'm stuck trying to solve a puzzle. One point will be something like "You're trying to achieve something but X interferes? Try a Zwischenzug to remove or deflect X, or to interfere with its movement." Then, many days later I will not need the checklist any more. Hopefully. :-) By the way, my analysis for 25. ..Kf7 26. Qh5+ Kf8 27. Qh7 Kf7? contains a blunder. I suggested that this transposes into the text line after 28. Nf5 Qg6 29. Re7+ Qxe7 30. Nxe7.
I missed the crushing and rather obvious Zwischenzug 30. Qxg7+! and now ..Ke6 31. Nxe7 or another Zwischenzug 31. Qe5+ It's funny, but I didn't see this while looking at the virtual board and then I realized it some time later when playing the puzzle through in my head, without even seeing the position. |
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| Jul-13-07 | | zb2cr: Initially, I dismissed the idea of 27. Qh7 as in the game, because it seemed to me that Black would just play 27. ... Kf7, with a perpetual. Obviously, White can't play 28. Qxg7+, Kxg7; 29. Nf5+, K(any); 30. Nxd6, Rxd6, as he's a Rook down. Can anyone tell me what White's response in that line should be? 28. Qh5+, Kf8; 29. f5 followed by Re6 seems promising. |
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| Jul-13-07 | | willyfly: <Crowaholic> <One day I will make a checklist> haha - how many times have I said that to myself - and - from this day forth I shall look for all possible ♘ forks <Zwischenzug> where's the Chessplayer's dictionary? |
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| Jul-13-07 | | TrueBlue: my vote goes for f5 |
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| Jul-13-07 | | bogo78: < JG27Pyth: Isn't 27...Kf7 black's best defense for draw? > Then 28 Nf5. This threatens Qg7# and also puts the question to the black Q. So the Q must move and in the same time defend the g7 square. So 28...Qf6 is forced. Now white has at least 29 Re7+ when 29...Qxe7 is forced. Now 30 Qxg7+ followed by Qxe7 and black can resign. |
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| Jul-13-07 | | patzer2: Today's puzzle solution is the decoy and clearance sacrifice 24. Rxd5!!, which sacs the exchange to clear the e-file for the follow-up 25. Ne7+! in order to flush out the Black King for a little pursuit (combination). |
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Jul-13-07
 | | fm avari viraf: White's position looks very rosy & so 24.Rxd5 is the only move that gives him a winning chances. 24...Qxd5 is not possible because of the fork on e7. Of course, White has to be very precise since 25.Re6? would give Black a chance for resurrection with 25...Re8! & White can't capture the Queen because of the back-rank mate. Therefore 25.Ne7+ Kf7 if Black King moves to h8 or h7 then 26.Re6  .26.Qh5+ Kf8 27.Qh7! Kf7 I saw this move instead of text but 28.Nf5 Qf6 29.Re7+ Qxe7 30.Qxg7+ Ke6 & 31.Ne7 but 31.Qxe7+ wins as we have seen in the game. |
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| Jul-13-07 | | bakuazer: I got the first 3 moves right. Then there are variations, and it was difficult(for me) to calculate all of them. But I had in my mind that it may lead to endgame where whites having more and better pawns will help. I guess i can count full point for myself for this (good) puzzle. |
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| Jul-13-07 | | MiCrooks: Well...Qxe7 is not actually forced or even best, but it is true Black is dead lost after 28. Nf5 after 27...Kf7. Black can step up after Qg6 Re7 Kf6, but then White STILL has Re6!! White will end up picking up the Bishop and have Q+N against two inactive Rooks. Would be a much quicker ending. |
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| Jul-13-07 | | Timex: Rxd5 forces exd5 other wise Ne7+ forking the king and queen. This was a relatively nice puzzle. Although i got it instantly, and I'm sure other people did too, it was quite instructive. You can see that the rook was pinning the knight to the queen and that the queen was covering the e7 square. The exchange sac is the perfect way to gain control over the e7 square. No matter what piece black uses to capture, lines to the king will be opened up and the vital e7 square under white's control. After move 24, the rest of the game is just checks and pushing the king around the board. The Queen drives the king up the board and gains material in the end. |
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| Jul-13-07 | | LivBlockade: After 25... ♔f7, I planned 26. ♘f5 which seems at least as good as 26. ♕h5+. So after 25... ♔f7; 26. ♘f5 ♕f6, Black threatens mate, but White has 27. ♖e7+ reaching a position similar to the game. Against other 25th moves by Black's King, I planned 26. ♖e6, with lines such as 25... ♔f8; 26. ♖e6 ♕c7; 27. ♕f5+ ♔e8; 28. ♘xd5+ with a winning discovered check. |
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Later Kibitzing> |
Kibitzing
sac: 24.Rxd5