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| Jun-05-08 | | patzer2: For today's Thursday puzzle solution, the
demolition 33...Rxf2! generates a mating attack. |
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| Jun-05-08 | | Reisswolf: Remarkable! A Thursday puzzle, and I was able to get it rather easily. Maybe I should buy a lottery ticket today. To be fair, this one is rather easy for a Thursday puzzle. |
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| Jun-05-08 | | jovack: white is lost after he loses that pawn and black can just replace the rook
pretty simple |
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| Jun-05-08 | | Once: The first thing I noticed about this position was the weakness of the white squares around the white king and the dominant position of the black queen on e4. And the white king is stalemated. So I really want a white squared bishop on the long diagonal or a knight to plonk on h3 - classic mates against an empty fianchetto. Of course, that's when you spot that you don't have a knight or white squared bishop. Drat. But holding the mating pattern in mind, we soon spot that Rxf2 also threatens the mate. Hmm. Interesting. Let's look a little deeper. There follows a forced sequence - 33. ... Rxf2 34. Rxf2 Rf1+ 35. Rf1. Black has a tremendous position. The f2 pawn is gone allowing checks along the second rank and the a7-g1 diagonal. At this juncture, I wanted to play Qe3+ with a king hunt that white surely cannot survive. I didn't spot the much stronger 35... Rc2 when I was analysing Rxf2, but hopefully in a real game I would have spotted it when I got there. Incidentally, my criteria for "solving" a position is whether or not I would have won from the puzzle position (or drawn if that is the most that could be achieved). So I don't mark myself down for not spotting the fastest continuation, as long as my continuation also works. But I do count it as a failure if I don't spot enough of the crucial line to win. I mentally disallow speculative moves, if I would not have the confidence to play them in a real game. But in the final analysis, I am not here to compete with anyone. I am here to learn. The key for me is whether: 1. In a real game I would have spotted that a combination was "on" and so decided to invest time to look for a forcing continuation. 2. I can spot the key features in the position which determine what kind of attack to play for. 3. I can calculate the line to enough of an advantage that I would have played it in real life. |
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| Jun-05-08 | | Marmot PFL: This is much harder than yesterday. I thought this was a puzzle they used before and I vaguely remembered the solution, but even with that it was much harder, and I wasted time looking at Rc6. Evidently it wasn't used before, but it still looks very familiar. I recall same theme of attacking with Q+R on the 7th was used fairly recently. |
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| Jun-05-08 | | jadedpawn: One way to find Rxf2 is by realizing that in the position the f2 pawn is the only thing preventing Qg2#, the second thing to note is that black has two rooks on the same file so a "reloader" theme is possible. So 33... Rxf2 34 Rxf2 removing the pawn and then 34... Rc1+ 35 Rf1 Rc2 and black's attack is too strong. |
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| Jun-05-08 | | Magic Castle: Rxf2 is almost instinctive to me. I mean I will grab the pawn without much ado and analyze later. The trigger of my mind set, is the open line for the other rook to the back rank, black queen on nearby to generate checks and threats, with the black king momentarily safe. I have experienced the same positions several times in friendly games and at times without the luxury of a safe king position. So I ended up thinking of continuous checks so as not to give white the tempo until the game is won. |
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| Jun-05-08 | | YouRang: <Once><Incidentally, my criteria for "solving" a position is whether or not I would have won from the puzzle position (or drawn if that is the most that could be achieved). So I don't mark myself down for not spotting the fastest continuation, as long as my continuation also works. But I do count it as a failure if I don't spot enough of the crucial line to win.> Yes, I've come to the same conclusion with regard to defining what it means to 'solve' a puzzle. I found that other attempts at definitions suffer from being too vague or too arbitrary to be generally useful. :-) |
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| Jun-05-08 | | zenpharaohs: <zenpharaohs>. "As I mentioned yesterday, "solution" legitimately means different things to different people. For me, your definition is too restrictive: for me, *one* path to a best outcome suffices." If you always put yourself in the position of the player who gains by the problem, then this can make sense. But if you consider how you might use the knowledge you get from the problem, perhaps you will be on the wrong side - that you will have to defend. And defense normally requires you to handle all the successful attacking lines. There are different points of view, but to some extent, if you are going to look into a position seriously, then you might as well do the whole thing. I agree though in this case, an explicit enumeration of all the lines would take up more space than it might be worth. There are a few motifs that contribute to create many variations but the understanding of the motifs is enough to get the whole picture. |
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| Jun-05-08 | | johnlspouge: <<zenpharaohs> wrote: [snip] If you always put yourself in the position of the player who gains by the problem, then this can make sense. But if you consider how you might use the knowledge you get from the problem, perhaps you will be on the wrong side - that you will have to defend. And defense normally requires you to handle all the successful attacking lines.> Occasionally, the puzzles involve trying to draw, so sometimes explicitly "I" am the defender. Even when "I" am to win, my "solution" must win against all defenses, so implicitly "I" am the defender, too. "You know these things as thoughts, but your thoughts are not your experiences, they are an echo and after-effect of your experiences: as when your room trembles when a carriage goes past. I however, am sitting in the carriage and often I am the carriage itself." Friedrich Nietzsche
Chess imitates Life. Perhaps one needs to be both White and Black at once :) In general, I enjoy your comments greatly. Thanks for responding. |
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| Feb-13-09 | | notyetagm: 33 ... ?
click for larger view33 ... ♖c2xf2!
click for larger view<patzer2: For today's Thursday puzzle solution, <<<the
demolition 33...Rxf2! generates a mating attack.>>>> |
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Jun-20-17
 | | FSR: Simon Says. |
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| Jun-20-17 | | Everyone: Simon's Dutch courage is not for <Everyone> |
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| May-01-20 | | stacase: A Rook sacrifice 33...Rxf2 looks like the ticket as it threatens mate essentially forcing 34.Rxf2 and then 34...Rc1+ naturally follows forcing 35.Rf1 Then it's a choice, between 35...Qe3+ or 35...Rc2 threatening mate again. The Queen check allows White's King to escape to h3 and a King hunt from there. The former is better. Besides that:
Hooray hooray, the first of May
Out door <fun> starts today! |
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May-01-20
 | | OhioChessFan: I tried 35...Qe3+, which isn't as clean as 35...Rc2. |
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| May-01-20 | | newzild: From the starting position, my main line followed the game as far as 37. Qh1 and now, instead of 37...Qe3+ as in the game, the first winning move I saw was 37...Qxb5, with the horrible threat 38...Bd4+. |
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| May-01-20 | | agb2002: Black has a rook and a bishop for both knights and four pawns. White threatens Nxc8.
The white castle looks weak. This suggests 33... Rxf2: A) 34.Kxf2 Rc2+ and mate in two.
B) 34.Rxf2 Rc1+ 35.Rf1 Rc2
B.1) 36.Rf2 Qe1+
B.1.a) 37.Rf1 Qe3+ 38.Kh1 Qe2 wins.
B.1.b) 37.Kg2 Rxf2+ 38.Kh3 Qf1+ 39.Kg4 Qe2+ 40.Kf5 (40.Kh3 Qh5#) 40... Qc2+ 41.Kg4 Qg6+ 42.Kh3 Qh5#. B.2) 36.Qd5 Qe3+ 37.Kh1 Qe2 wins.
C) 34.Qd5 Rxf1+ 35.Kxf1 Rc1+ 36.Kf2 Rc2+ and mate in three. |
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| May-01-20 | | Brenin: Great finish, but 30 ... f4, allowing a better defence with 31 Qxf4, was unnecessary: even stronger would have been an immediate 30 ... Qe2, leaving the P on f5 to prevent Kg4 or Ke4 in the event of a King hunt, e.g. 31 Rf1 Rc1 32 Rxc1 Rxc1 33 e7 Qf1+ 34 Kf3 Rc2. |
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| May-01-20 | | morfishine: <33...Rxf2> |
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| May-01-20 | | SpamIAm: <newzild>, in your line with 37...Qxb5 what about 38.Qa8+ Kh7 39. Qe4+ winning the rook? |
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May-01-20
 | | chrisowen: Tabmicks brigjovi rf2crash fonejovi jobsbruv brigjovi diestuff veschoor fonejovi jobsbruv brigjovi 9 it lowumump lividjoe brigjovi tabmicks brigjovi djexibit vasejovi reclashi joeywits brigjovi titbiton frumpyja it's vasejovi bindruff rf2crash fonejovi jobsbruv brigjovi umsumums duffones jivejovi goclucky viescoin ihascoin; veschoor
brigjovi rf2crash fonejovi? |
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| May-01-20 | | Louben: 33...Rxf2 is quite obvious (especially when you know that this is a puzzle!) but it is more difficult to see that 35...Rc2 is better than the tempting 35...Qe3+ after which the win is less straightforward. |
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May-01-20
| | chrisowen: Ok fog no accident? |
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May-01-20
| | chrisowen: Can you hear it no? |
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May-01-20
| | chrisowen: People f2 in nine no? |
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Kibitzing
sac: 33...Rxf2