< Earlier Kibitzing · PAGE 4 OF 4 ·
|Sep-17-08|| ||bunkerputt: <Once> I had exactly the same experience and chose Bg6. I'm really impressed with the game continuation. It really highlights a deficiency in my thought process.|
|Sep-17-08|| ||zooter: <ed gantro: I losted yesterday puzzle....is there anyone who remember it? tnx>|
Leko vs Radjabov, 2006
45.White to play
|Sep-17-08|| ||playground player: Not if my life depended on it would I have found this OTB!|
|Sep-17-08|| ||TrueBlue: playground, it's easy once you have seen enough puzzles with the same pattern: get the king running and trap it, do a sacrifice at the beginning if necessary|
|Sep-17-08|| ||kevin86: White's domination of the light squares leads to quick checkmate.|
40 f8+ xf8 (xf8 41 h7+ h8 42 g6+ g8 43 h7#) 41 h8+ f7 42 g6+ (or xg6 43h5#) e6 44 c8+ d7 45 f5+ e7 46 xd7+ f8 47 g6 and mate follows a few spite checks by black
|Sep-17-08|| ||zb2cr: <playground player>, |
It was at the very limit of my board vision, too, as my initial post indicated.
|Sep-17-08|| ||skemup: Easy :)
2 forced lines - after Kxf8 or Qxf8 only thing You have to do is check,check,check and so on..
|Sep-17-08|| ||TheaN: I would like to refer to my post above, where I changed my own game from yesterday that went 1.Qe2 b5, but now 1.Qe2 Bd7:|
click for larger view
White to play and win.
|Sep-17-08|| ||DarthStapler: I got the first two moves|
|Sep-17-08|| ||Kasputin: Just saw what white played on move 40 in the game. Here is my analysis however (prior to seeing the solution):|
In terms of material black is ahead a knight for a pawn.
There are lots of candidate moves that suggest themselves (e.g., Rxf8+, Bg6, Bh7+, Rh3) but part of the problem is to find moves that really strengthen white's position. This isn't so easy (to me at least) because a lot of forceful looking moves may have the opposite effect, namely to let the black king escape the mating net in one way or another.
One of the "quieter" moves (i.e., in the sense that it is not an immediate sacrifice) is 40. Rf7. It threatens the queen and the bishop, but it also puts pressure on the g7 square and makes the e-pawn's advance a little easier.
40. Rf7 Qd8
Black's move looks more-or-less forced. Moving ...Qe8 instead allows 41. Rxg7+ and the black queen is captured next move. Moving ...Qe6 and white can either take bishop with the rook or move 41. Bf5 - a move that looks stronger to me. Then it looks like 41 ...Qh6 is the only move for black, e.g., 40 ...Qe6; 41. Bf5 Qh6; 42. Qxh6 gxh6; 43. Rxc7. Now white's e-pawn is ready to march, e.g., 43 ...Rxd4 e6 and it looks like white will win.
If black take with ...Nxe6, then white will play 42. Bh7+ Kh8; 43. Bg6+ Kg8; 44. Qh7#. White has to be careful though because advancing the pawn also opens the b8-h2 diagonal to the black bishop.
(black hopes perhaps to play ...Rxd3 next with the threat of mate with ...Rd1#)
42. Rxf8+ Qxf8 (or ...Kxf8 then 43. Qf7#)
It really makes no difference if black plays something other than 41 ...Rxd4 (e.g., ...Rb3, ...Qe8, ...Bh2+, etc...) because black cannot really stop the mate. As mentioned above moving the knight or taking the e6 pawn with the knight leads to mate as well. It should also be noted that if black plays (at any time) ...Rb1+, then this is simply a spite check. Capturing the rook with the bishop does not alter anything important in the position (black is simply down a rook on top of everything else).
I do have to admit, however, that before I saw 42. Rxf8+, etc..., I looked at:
42. e7 Rxd3
(now black threatens ...Rd1# next move).
43. exf8+ Qxf8
44. Rxf8+ Kxf8
and I think perhaps white will come out with a win with this line. But having gone back and seeing the forced mate, then this is line is not even a consideration.
Anyway, here is the best sequence (in my view), once again:
40. Rf7 Qd8
41. e6 Rxd4 (or ...Nxe6; Bh7+, etc...)
42. Rxf8+ Qxf8
|Sep-17-08|| ||Kasputin: Clearly, I have really lost it today. I was thinking that 40. Rf7 was safe because the queen protects it. Of course if 40...Qxf7; 41. Qxf7 then black just plays 41 ...Kxf7|
|Sep-17-08|| ||Kasputin: I think I need another hobby. Any suggestions?|
|Sep-17-08|| ||dzechiel: <Kasputin: I think I need another hobby. Any suggestions?>|
Stick with chess. Today's responders can seemingly be grouped into two categories:
1) Those who got it very quickly
2) Those who didn't get it at all
If I switched hobbies every time I came up short, I would have run out of possible hobbies decades ago.
|Sep-17-08|| ||Pawn and Two: Going into the final round of the 19th Soviet Championship Keres led the field with 11 points, followed by Geller, Petrosian and Smyslov with 10.5 points.|
Keres was to play Taimanov, who had 9.5 points, Keres vs Taimanov, 1951.
Petrosian was to play the last placed Terpugov, E Terpugov vs Petrosian, 1951.
Geller would play Novotelnov, would was only one place ahead of Terpugov, while Smyslov would meet Aronin who had 8.5 points, Aronin vs Smyslov, 1951.
Obviously Geller, Petrosian and Smyslov would be playing for a win, and hoping that Taimanov could hold Keres to at least a draw.
Each of these games were interesting and provided for a very exciting conclusion to this championship.
|Sep-17-08|| ||Shams: <Pawn and Two> thanks for the background info|
|Sep-17-08|| ||VooDooMoves: <TheaN> Nice puzzle! Fits in very well with today's. |
1) 1. Rxf8+ and now
1a)1...Rxf8 2. Bg6+ Kg8 (Kxg6 3. Qh5#) 3. Rh8+! Kxh8 4. Qh5+ Kg8 5. Qh7# and
1b)1...Kxf8 2. Rh8+ Kf7 3. Bg6+ Kxg6 (now forced) 4. Qh5#
|Sep-17-08|| ||penguin496: Very good puzzles this week so far, and difficulty ratings are right on.|
|Sep-17-08|| ||outplayer: That bishop on c7 is the real problem for black. If it weren't there as wrongly shown in a diagram of the Lev Alburt's Chess Strategy for the Tournament Player Black king could escape the mating net.|
|Sep-17-08|| ||TheaN: <VooDooMoves> completely correct, obviously as it both leads to forced mate. Indeed, it would have been very weird had my opponent played Bd7, finishing the game like this, and the next day seeing this puzzle. After the weak b5?? whatsoever, both Rxf8† or Bg6† were not hard to spot, seeing that the a8-Rook is completely useless.|
|Sep-17-08|| ||Pawn and Two: After 33...h6? (much better was 33...Bd8!) Geller could have won this game, as has been noted by <Honza Cervenka>, by 34.Qa3!.|
Fritz shows that (1.67) (20 ply) 34.Qa3 c5 35.dxc5 Qa5 36.Qxa5 Bxa5 37.Ra7 Bb4 38.c6 Rc8 39.Rb7 hxg5 40.Rxb4, will win for White.
34.Qd1? gave the advantage to Black. After 34...hxg5, White's best reply was: (-.79) (21 ply) 35.Qf3 Bd6 36.Qf5 Rb7 37.Rxf8+ Bxf8 38.Qe6+ Rf7 39.Bg6 Qb7 40.Bxf7+ Qxf7 41.Qxc6, which may still draw. However, based on his tournament position, Geller needed a win, and this may be why he tried 35.Qh5?.
However, after 35.Qh5?, the position was definitely in favor of Black: (-1.33) (21 ply) 35.Qh5? Bd8! 36.Bf5 c5 37.dxc5 Qxc5 38.Rd7 Be7 39.Bg6 Nxg6 40.Qxg6 Rb6 41.Qe8+ Kh7 42.Qh5+ Rh6 43.Qd1 Bd6.
Black then erred by playing 35...Bd6?, after which the position was equal: (.00) (23 ply) 36.Rxf8+ Kxf8 37.Qh8+ Ke7 38.Qxg7+ Kd8 39.Qg8+ Kc7 40.Qg7+ Kd8.
Geller probably saw the drawing line beginning with 36.Rxf8+, but his tournament position may have encouraged him to try 36.Rf3?. Fritz indicates the position after 36.Rf3? is in favor of Black:(-.78) (23 ply) 36.Rf3? Qa7 37.Qxg5 Rb3 38.Bf5 Qe7 39.Qg4 Rb4 40.Kh2 Bc7 41.Bc2 Rb2 42.Ba4.
Black could keep some advantage after either 36...Qa7, or (-.79) (21 ply) 36...Qb7 37.e4 g6.
At move 37, Black erred with: (.00) (21 ply) 37...Qe7? 38.e5 Bc7, after which the position was again equal.
Geller could now take the draw by playing: (.00) (22 ply) 39.Rxf8+ Kxf8 40.Qh8+ Kf7 41.Qh5+ g6 42.Qh7+ Kf8 43.Qh8+ Kf7 44.Qh7+.
Instead, Geller took a big risk and played 39.g4?. Fritz indicates after 39.g4?, Black has a strong advantage: (-1.20) (22 ply) 39.g4? Qe6! 40.Rh3 Qh6 41.Qxh6 gxh6 42.Rxh6, (-2.13) (24 ply) 42...Rb6 43.Bf5 Kg7 44.Rh5 Bd8 (-2.24) (26 ply) 45.Rh3 Rb2 46.Rd3 Bb6 47.g3 Kf7 48.Kf1 Ne6 49.Bxe6+ Kxe6 50.f4 Rb4 51.f5+ Ke7 52.Rc3 Rc4.
At this point, after either (-2.59) (21 ply) 53.f6+ Kf7, or (-2.58) (21 ply) 53.Rb3 Bxd4, Fritz shows Black's advantage continuing to increase, with good winning chances for Black.
Instead of playing the strong 39...Qe6!, with winning chances, Novotelnov blundered with 39...Rb4??, allowing a forced mate.
Geller's playing for a win at all costs finally paid off, but he still had to be content with a share of 2nd place with Petrosian, 1/2 point behind the tournament winner Keres, and 1/2 point ahead of the 4th place Smyslov.
|Sep-17-08|| ||DeepThought: Wednesday: 40.Rxf8+ mate in 7! Are you crazy?
What will you ask for on Saturday? Mate in 11?
|Sep-17-08|| ||EXIDE: Good puzzle. The order of moves are very important. I.e. 40. Rxf8:QxR 41 Requires first a B check at h7 followed by Bg6+ and Q+ at h7 to mate. Very nice. I got half of it only. I wonder how many moves earlier did Geller plan this, or is this something that Grandmasters think thru on each and every position.|
|Sep-18-08|| ||brankat: <Kasputin> <I think I need another hobby. Any suggestions?>|
I suggest You stick it out with Chess.
I got this one right in a matter of seconds this time. Probably because I went through a similar positional set-up only a few days ago. This happens to me, on the average, once in some 20 tries :-)
Pattern recognition! The most important aspect of the process of learning the game.
Btw, I also live in Vancouver :-)
Visit my forum sometime, when You fell like it.
|Sep-18-08|| ||Kasputin: Hi <dzechiel> and <brankat>. Thanks for the encourage. Although frustrated, I wasn't being entirely serious in my plea to others to suggest a new hobby. Still, it is nice to have positive replies like those from both of you.|
<brankat> - I did look briefly at your chess forum and will visit it again. Also, I noticed your Nimzo poem (not in the forum but in your bio). I have a book at home of chess poetry by David Solway. Anyway, I will add 2 of those poems to your forum.
|Apr-15-09|| ||M.D. Wilson: 25 Rb7 is a real Geller move.|
< Earlier Kibitzing · PAGE 4 OF 4 ·