Tags: chess, chess, play chess, play chess, chess online, online chess, backgammon online
Chess Forum intochess.com << online chess - < chess - chess > - chess online >>
| From | Message | Posted by aixrad intochess.com
9/05/2008 05:18:31 Play online chess | Subject: Checkmate or not
Message: Hello,
I recently played with black this game game with pianofred.
In this Position
I generated the conditional move 20 Rf2 Re1+ ... with threefold repetition to save the draw because I had less material.
pianofred mean I maybe could checkmate him forces but we both don't know how.
Is this a forced checkmate position?
Was it right to save the draw with threefold repetition?
Greetings
Ralf
| Posted by beefturnmail intochess.com
9/05/2008 05:49:19 Play online chess |
Message: Yes, it is forced checkmate as follows: 20. Rf2 Re1+ 21 Rf1 Qxf1#
| Posted by aixrad intochess.com
9/05/2008 06:36:33 Play online chess |
Message: Oh, now I see it.
Then I wa very stupd and blind at that moment ——— A Chess Player’s Attacks Pay Off, Even When They Shouldn’t — Computer chess programs are so popular, and so good, that almost anybody can use one to figure out where a chess player went wrong — when the game is over. But at the chess board, competitors can rely only on their brains and wits (unless they are cheating) and are bound to make mistakes, especially when they are under pressure. One reason why Veselin Topalov of Bulgaria is so good is that he forces opponents to make mistakes. Ranked No. 2 in the world, he is an aggressive chess player who is always trying to attack. There are problems with this approach, when being aggressive is not justified. But the constant pressure that he places on his opponents often ...
Posted by chessnovice intochess.com
9/05/2008 21:39:08 Play online chess | put a positive spin on it
Message: You're just more generous than you thought. :] ——— Vishy Anand saves his strength before world match with Veselin Topalov — Vishy Anand, who defends his world title against Veselin Topalov at Sofia in April, kept his powder dry in his warm-up chess event at Corus Wijk where the Indian, 40, played at full force in only a few games. In contrast Topalov, 34, has played hard in almost every game this week at the Linares elite chess tournament in Andalusia, where he won first prize with 6.5/10, half a point ahead of Russia's Alex Grischuk. The Bulgarian squeezed points from tiny advantages and by round six had regained the world No1 spot on the live chess ratings from Magnus Carlsen. These daily updated rankings have a huge following and their prestige is now not far short of ...
Posted by ionadowman intochess.com
9/07/2008 13:55:23 Play online chess | Incidentally...
Message: ...there is a second, closely related, checkmate: 21.Re1+ Rf1 22.Rxf1#. I think we all get afflicted by chess hallucinations and mirages from time to time. Clearly the material deficit was preying on your mind when White stopped your threatened mate on h2. Suddenly the BQ was shorn of its power to move diagonally!
Bad luck,
Ion ——— A Match All About the Sicilian — An unusual chess match is being held in South Carolina. It pits Judit Polgar of Hungary, the strongest woman chess payer in history, who is now ranked No. 46 in the world, but once was in the top 10, against Gregory Kaidanov, a Ukrainian-born American grandmaster, who is ranked No. 261. The match is four games and has an interesting twist: Each game begins with a different variation of the Sicilian Defense. The first game was on Monday and was won by Kaidanov, who had White, and featured the Sveshnikov. The second, which was won by Polgar, was on Tuesday and was a Dragon. The third chess game, which is being played on Wednesday, and can ...
Posted by wuzzie intochess.com
9/11/2008 04:13:47 Play online chess | not checkmate
Message: after 20.Rf2 it is mate, but if white plays 20.Qg4+ it forces trade of Queens and black is a piece behind but still has a free pawn but I think white could defend thatone ——— The f-pawn, part 2: is f5 the answer here? — Does White have a better option than moving the f-pawn? Continuing our look at the chess equivalent of route one football – the f-pawn advance... RB Well, let's see what happens when we push – 1 f5. The answer comes back faster than Manchester United on the break, not much. Black is under no compulsion to take the pawn and can instead centralise with 1…Nd4 or even 1…Qd4, or start getting the queen's rook into play with 1…Rac8, and 1…Nb4, hitting the d-pawn, would be irritating. All right, let's try to be logical. What's wrong here is that even if we could swap off pawns on the f-file, the f1-rook would remain blocked by the bishop. Let's ...
Posted by lighttotheright intochess.com
9/11/2008 11:59:11 Play online chess |
Message: I agree that it is not checkmate.
Aixrad, you did well to accept a draw in this position.
After wuzzie's 20. Qg4+ Qxg4 21. fxg4...Rxb2 22. Nd2 would have left White with a possible decisive advantage. Although Black would have 2 passed pawns, the vertical isolation would have been difficult to defend. White would have opportunities to open his own passed pawns along the King-side once the black h pawn fell. And don't forget that White would still have an extra piece to fight in this position. Black cannot defend everything under best play. ——— Big Surprises in Europe — Europe has been a center of chess activity over the last month with a series of major open tournaments. The first was the Gibtelecom Chess Festival in Gibraltar, which ran from Jan. 26 through Feb. 4. Among the world-class chess players who competed were Etienne Bacrot of France, Sergei Movsesian of Slovakia, Francisco Vallejo Pons of Spain, Michael Adams of England, and Gata Kamsky of the United States. The chess tournament ended in a nine-way tie for first, with Adams winning a four-person playoff to take the title. The Moscow Open, which overlapped with Gibtelecom and ended on Feb. 7, was divided into four sections — A, B, C and D — with ...
Posted by heinzkat intochess.com
9/11/2008 12:04:46 Play online chess |
Message: We are talking about this position after White's 23rd move:
Should Black play 23. ... Re2, taking the draw because of threefold repetition, or should Black play 23. ... Qxf1#/Rxf1#, taking the win because of checkmate. You cannot say that Black did well to take the draw in this position !?!?!???
| Posted by lighttotheright intochess.com
9/11/2008 12:18:58 Play online chess |
Message: I agreed with wuzzie that after 20. Re2 it was mate; but not in the position shown with white to move in the first post.
It depends upon what position you are talking about.
That is the danger of talking about this game or any like it. If you analyse a different position, you can get entirely different conclusions.
| Posted by tugger intochess.com
9/11/2008 15:27:10 Play online chess |
Message: I agree with heinzkat. I don't intend to critisise anybody's game, but Black has a forced win in 1 at one stage, to then suggest he did well to draw is, quite frankly, ludicrous. There may well have been a stage of the game earlier, perhaps even just a couple of moves previous, where a draw for Black could be considered a good result, but after 20. Rf2?? it's a different matter entirely, as Black has a forced mate in two from that position, and even makes the correct first move to give him the win in one more.
For reference, White should have played 20. Qg4+ and he probably wins, forcing the Queens off the board with a pawn advantage (just the one pawn, as b2 is vulnerable to capture from the Rook). Better still would be to develop the Knight as opposed greedily snatching the pawn on move 19.
| Posted by tugger intochess.com
9/11/2008 15:33:07 Play online chess |
Message: Having re-read the thread, I can see where lighttotheright is coming from...
The position in the first post is not a win for Black, as it is White to move, and he can save with Qg4+. It is only after White plays Rf2 that it becomes a win for Black.
But I would still say that a draw for Black after missing a mate in one can not be considered a good result.
| Posted by lighttotheright intochess.com
9/11/2008 22:11:00 Play online chess |
Message: Wait a minute. He made a decision to draw on move 20.
Then White made a mistake and Black did not take advantage of it. That's compounding mistakes. Both sides clearly intended the draw by repeating the position shown by aixrad on move 20. It did not matter that the repeating sequence was flawed. Neither player could see that flaw. Aixrad asked about the exact position he displayed in the first post. I merely confirmed wuzzie's analysis of that exact position.
This game was a draw by repetition not by an accepted draw on move 20. It lasted longer than that (I knew that all along). The presumptive acceptance of a draw on move 20 was what I commented on...not the mistakes made later. The line of play I gave as example proves what I was talking about.
To later criticize me for stating something I didn't is ludicrous. No where did I refute any of the previous analysis given by others that show the forced mates. But those forced mates do not materialize until after White's Rf2.
| Posted by tugger intochess.com
9/12/2008 08:20:12 Play online chess |
Message: i'm not intending to antagonise anyone, but this comment...
"Aixrad, you did well to accept a draw in this position."
is what i consider ludicrous. it's my opinion that aixrad should be disappointed, not pleased. i don't mean to pan him down, it's intended as constructive critisism. one should never be pleased about missing an easy win. aixrad should be looking to improve his game to the point where he can spot mate in one positions, and that means he should be disappointed when he misses them. this will hopefully drive him forward, trying to ensure he does not feel this disappointment again.
i do know what lighttotheright is saying, though. in the position at the very top of this thread, aixrad is worse off positionally and materially. so i understand why he is saying a draw was not bad.
perhaps a better way of approaching this problem is to directly answer the questions aixrad asks...
"Is this a forced checkmate position?" - Not in this position.
"Was it right to save the draw with threefold repetition?" - No, you should've waited to see what White's reply to Re2 was, then analysed the position, instead of putting up conditional moves. Perhaps then you might have found the win.
| Posted by lighttotheright intochess.com
9/12/2008 11:15:05 Play online chess |
Message: I've explained the comment extensively. I'm not going to argue about it. It is not worth it.
But I would like to point out that aizrad is only a 1300 level player. We shouldn't expect a 1600 to 1700 level or greater performance out of him.
Is a draw the best result? Of course not. But don't forget that a draw is still a good result regardless. Certainly, it is a lot better than a loss.
| Posted by tugger intochess.com
9/13/2008 07:41:06 Play online chess |
Message: i kind of want to stop arguing about this too! but i have to put my opinion up about this comment...
"But I would like to point out that aizrad is only a 1300 level player. We shouldn't expect a 1600 to 1700 level or greater performance out of him. "
before i go on, i stress again it's just my opinion, but i really don't think that spotting that mate is 1600+ standard, in fact i would expect a 1300 player to have no trouble winning after Rf2. this is precisely the reason aixrad should be disappointed. if he's not disappointed, then how can he drive himself on to improve? if instead he shrugs his shoulders and says "well, a draw is a good result here", then i don't see him breaking into the 1600+ class. but maybe that's just the way i approach things. i guess he may see things differently. he may be boosted by the fact he didn't lose, and as such have more confidence. but i know i would be disappointed if i missed that.
it's ironic really, as during the threefold repetition, both players took it in turns to blunder away a win!
|
| | | | |
|