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|Sep-18-09|| ||kevin86: A great puzzle-just think: a queen sac on FRIDAY?|
|Sep-18-09|| ||njchess: Although there is a lot of wood on the board which can make things complicated, it's pretty obvious that Black is set to attack White's king. And, despite the pieces on the board, White has few useful defenders.|
Black is directly attacking along the the g-file and the b8-h2 diagonal, and indirectly along the h-file. White's king guards the h2 pawn and shares guard duty of the g2 pawn with his queen. Since White's f-pawn has been advanced, g3 is only guarded by the h-pawn.
It is this last fact, coupled with the idea of opening the h-file that Black will base his attack. If Black can induce a capture on g3 with his h-pawn, he will have a standard mating position with mate in three. Given the position, White cannot directly prevent Black's attack so his king must flee.
However, since f2 is controlled by Black's pawn on g3, White's king must reach e2 to be safe. His king will need three moves to reach e2, but he must also move his queen and rook to accomplish this, for a total of five moves.
By move count alone, White will lose unless he can divert Black's attack with more immediate threats (threats requiring no more than two moves since Black will have already started his mating sequence with 22. ... Rh4).
20. ... Qg3! 21. hxg3 (21. Kg1? Qxh2+ 22. Kf2 Qg3+ 23. Kg1 h3 and White can only delay checkmate) hxg3+ 22. Kg1 Rh4! (Initially, I tried the more natural 22. ... Rh2 but I found that White can play 25. Nf1! which complicates Black's attack. It's still losing, but it takes longer for Black to win.)
After move 22, Black is two moves from checkmate (Rah8 and Rh1++). White must make four moves: one with his queen to vacate e2, one with his rook to vacate f1 and two king moves to reach e2.
He can sacrifice his queen by playing 23. Qc4 with the idea of attacking e6 with check or c7 with check and thereby force Black to give tempo to play 23. ... Nxc4 to eliminate the threat and keep his attack going. Given that Black has already sacrificed his queen, this material loss is acceptable should White survive the attack.
Now, White just needs three moves to escape, and Black still needs two to mate, but it's White's move so it looks like he will make it. Although White's rook on f1 cannot generate any similar threat, he could simply sacrifice it with Rf2. (Note: White's queen and rook moves cannot be transposed due to the gain in tempo.)
23. Qc4! ( Qxe6+ or Qxc7+) Nxc4 24. Rf2 Ne3! (and the mate is on again!) 25. Nf1 (only delays) Rah8 and White can only delay the inevitable checkmate. Time to check.
Well, it looks like Black made his life difficult by playing Rh2 instead of Rh4. Obviously he did not see Nf1, since Rh2 simply gives it a target, but it still worked out in the end. It took me about two minutes to find Qc4 and Ne3, and about five minutes to find Nf1 which lead me to rethink 22. ... Rh2. And another five minutes to work out that Rh4 was better.
As for the game, 5. Bg5? is a really poor move that only loses the initiative. Better would have been 5. Nxc6 with equality. After 6. Bxf6, White's game is all downhill.
|Sep-18-09|| ||LIFE Master AJ: <YouRang>
GM Lev Alburt taught me that - when you see an idea - you should use as many different move orders as possible.
Once I saw the ...Qg3 idea, I wanted to prepare it as much as possible.
One of the first things I looked at was 20...Rh5; then doubling the Rooks. That way, when I play the BQ to the g3-square, if he plays PxQ/g3; I answer with ...hxg3+; and (next) ...Rh1#.
Alll this would be great - if White did nothing at all. (TIME!!!) However, if 20...Rh5; then 21.Rf2, ot even 20.Rfb1. Then if (ever) ...Qg3; White simply answers with Nf1. (And maybe Kg1 next.) Then its not so easy for Black to break through.
Does this help?
|Sep-18-09|| ||zaxcvd: I didnt get it unfortunately. I guess I automatically rejected what looks like just dropping the queen. After seeing the solution, however, I plugged it into SCID using toga and it found it instantly. I was wondering though if older software can find such moves easily and so I put the game into
Rebel Decade 3.0 which runs in DOS mode and needs Dosbox run in xp/vista.
It could NOT FIND IT! instead it suggests c7-c5. No matter how long i run it -- up to 5 minutes!
Rebel website: http://www.rebel.nl/edsoft.htm
The estimated ELO of Rebel is about 2300!
|Sep-18-09|| ||waustad: <aj>I tried Bxh2 and it worked against me, but somebody could probably find a much nicer continuation that refutes my attack.|
|Sep-18-09|| ||chrisowen: <Patriot> Looks like 20..Qg3 and white starts the party. 21.Kg1 serves only to forestall the inevitable. If i punch it in Fruit the good h3 spike spilling forwards still mops up eventually winning the knight on d2. Perhaps a better trye is 20.Ne2 Be3 21.Nb3 h3 22.g3 Raf8 23.Ned4 Qh5 24.Qe2 Bxd4 25.g4 Qg5 and the hunter soon becomes the hunted.|
click for larger view
|Sep-18-09|| ||playground player: I don't see the point of White's 23.Qc4 at all.|
|Sep-18-09|| ||DrCurmudgeon: It's in some of the earlier kibitzes. White can only stop mate by moving his queen and rook so his king can flee, but he doesn't have the time. 23.Qc4 threatens 24.Qxe6+, so Black has to waste a move capturing the queen.|
Not that it helped.
|Sep-18-09|| ||arnaud1959: Any other rook move along de h-file instead of 22.-Rh2 would be more accurate. White could have played then 25.-Rah8 as his rook on h2 would not be threatened by Nf1 any more.|
|Sep-18-09|| ||Patriot: <chrisowen> Thanks, I'll see what my buddy Fritz says about the h3 line later this evening. But it's clear to me the Qg3+ line is much better.|
I haven't thought about white's best defense on move 20, but Ne2 definitely looks like a good candidate. And 20.Qe1 looks really bad: 20...Nd3 21.Qe2 Qg3 22.hxg3 hxg3+ 23.Kg1 Rh2 24.Nf5+ Kd7 25.Qxd3 Rah8 and mate is unstoppable.
|Sep-18-09|| ||Parriotblue: Well, I saw Qg3 as the best move but I'd like to know if 22...Rh2 is really necessary, I mean 22...Rh7, h6, h5 or h4 is winning too, right?|
|Sep-18-09|| ||Marmot PFL: Not so much calculation needed here for a friday - 20 Qg3 21 hg hg+ 22 Kg1 Rh2 threatening Rh8 etc. and white might as well resign instead of throwing away material just to delay mate.|
|Sep-18-09|| ||jsheedy: 20...Qg3, 21. hxg3 (forced), hxg3+, 22. Kg1, Rh2! leaves white with no defense against Rah8 and Rh1#. White simply can't clear his pieces out of the way of his king in time for it to escape. Any checks by white simply lose the queen and gain a move before the inevitable. Time to check...|
|Sep-18-09|| ||cyclon: Beautiful.|
|Sep-18-09|| ||TheSlid: <GM Lev Alburt taught me that - when you see an idea - you should use as many different move orders as possible. >|
And I, of course, have this as a major failing. I would have played Qg3 in the 2 seconds it took for me see it. Then I'd have left the board theatrically and waltzed around the other boards for while, leaving the opponent to work out any refutation.
Probably just one reason I'm a fan rather than a player!
|Sep-18-09|| ||chrisowen: <Patriot> It was when checking this line I think you mean 24..Kf7 not Kd7. 20..Nd3 symbolises the lost cause unless 24..Kd7, then 27.Qb5+ keeps white alive. The almost out of book 5.Bg5 is the start of white's trouble. 22.hxg3 seems to result in mate in 8. White goes sideways to infinity and beyond with the hypothetical not so good Qe1 in the end.|
|Sep-18-09|| ||felixd: Yeah I found it really easily!
I would so much like to find a such move on the board...
|Sep-18-09|| ||WhiteRook48: I did not find it|
|Sep-18-09|| ||Patriot: <chrisowen> Nice catch. After 20.Qe1 in my line, "20...Nd3 21.Qe2 Qg3 22.hxg3 hxg3+ 23.Kg1 Rh2 24.Nf5+ Kd7 25.Qxd3 Rah8 and mate is unstoppable.", 24...Kf7 is much better. After 24...Kd7 25.Qxd3 Rah8 26.Qb5+ gives white a little more counterplay than I would like. For example, 26...Kd8? 27.Nxg3 Bxg3 28.Qg5+ and white is winning.|
|Sep-18-09|| ||wals: 20.Ne2 would have kept White in the game. Qe2 Indicated -#14.|
Rybka 3 1cpu ply 15 time 2 min 45
|Sep-18-09|| ||wals: <TheSlid> good on you mate. I'm with you.|
|Sep-18-09|| ||FlashinthePan: 21...Qg3, with a threat of mate by doubling the rooks on the open h-file, begs to be played, and it took me a couple of seconds to spot it. The rest is technicalities, and, without finding the sharpest line, Black easily wins a rook at least in many variations. Altogether, I don't think this puzzle is worthy of a Friday, although I did enjoy the finesse of 25...Rh1+ leading to mate instead of the more obvious 25...Nxf1 26.Kxf1 (forced) Rh1 winning a rook.|
|Sep-19-09|| ||steveoho: Maybe a better challenge would be for white to prolong the game as long as he can. And I think he did fairly well without outright just throwing away pieces.|
|Nov-02-10|| ||sevenseaman: Despite White sacrificing his Q just to make space for his K, Black keeps the White K glued to h8. This is an attractive feature of this clever game by Carls.|
Carls totally outwits Schultz.
A great job by <YouRang> in collecting some rare and exceptionally beautiful games; else some of them may have remained unknown.
|Mar-01-13|| ||vinidivici: GOTD!|
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