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Joaquim Durao vs Henry H Catozzi
Dublin Zonal (1957), Dublin zt, rd 3
Spanish Game: Closed Variations. Delayed Exchange (C85)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jul-17-08
Premium Chessgames Member
  kevin86: This one was a large piece of chessboard magic.Here is a bolt from the blue executed by a sacrificial rook,and a few pawns.

The first move forces black's reply as the pawn is pinned.

The second is just the reverse. Here,the rook must be taken.

The lethal move is made possible by the black pawns blocking the king's escape- Sort of a jubior version of an epaulette mate.

The puzzle is very simple,once the solver realizes how easy it is.

Jul-17-08  iscu two: Daily Puzzle F.A.Q.:

"I'm solving the puzzles faster each week. Are they getting easier?

No, you're becoming stronger! Congratulations."

Yes! Under 10 seconds for a Thursday puzzle - I am freaking AWESOME at chess now. See you in Dallas, patzers.

Jul-17-08  YouRang: Got it. I think it helped that I've seen puzzles before where mate happened in similar fashion (the king surrounded by his own pawns on a rook-file, and being mated by a pawn).

But 43.Rf4+ was an obvious forcing move, and 44.Rh4+ was simply a move that you've GOT to consider, even if you don't see the mate right away. It forces 44...gxh4, and then it can't take more than a few seconds to notice that 45.g4 is mate.

Jul-17-08  Geronimo: The real "master move" here is 41. Rg7, which I most probably would not have considered otb. Black's response, oblivious to the mating combination, should count as a serious blunder. Otherwise, the puzzle would start with 41. white to play and be much more challenging.
Jul-17-08  Zorts: Got it only because I seen the theme in a Ken Howard problem book. <The real master move is 41.Rg7> touche', Geronimo, what kind of work are you in?
Jul-17-08  Shams: my favorite mating pattern. tuesday puzzle at best.
Jul-17-08  MiCrooks: For a Thursday, this really should have been backed up one move. Black's blunder was b5?? where Rf8 or even Rf6 would have prevented the whole line and made White's job pretty difficult.

Then we could have been left to find Raf7! which forces mate in all variations. A much worthier puzzle and since it is still a forced mate, you don't have to rely on further black blunders to make it work.

Jul-17-08  MiCrooks: We then could have ended discussing how inferior replies like Ra1 were also solutions because they too lead to a White win, and on silly moves like bxc4 a quick mate as well with Rh1 => Rh4++ :)!
Jul-17-08  Kings Indian: I got it in a matter of seconds but I got 44.Kh3. Not as pretty as the solution played in the game.
Jul-17-08  sfm: I love the move 41.Rg7(!!)
It does not make much sense, does it? What is the rook hoping to accomplish there?

Unless White had seen it all! Black could now get a very good game with 41.-,Rf8
42.Raf7,Rf6
43.Rxf8,Rxf8
44.Rg6,h5
I don't know how that would end but doesn't it look good for black?

Some think chess is a game where you sit and move pieces around. Passing time. Like playing domino, or monopoly. Oh, no.

Dammit! He will play 41.-,Rf8. Of course he will.

He might even look up with a little smile saying 'Now, you didn't think I'd overlook that, did you really?'. I sit there, hoping for the miracle. Faking relaxedness, even trying to look a bit disinterested.

I look at the queenside of the board. Definitely not at the kingside, as if something could happen there. No poker player ever did a better job.

Maybe it worked.

My heart skips a beat when his right hand start moving. With disbelief I see his hand passing by the rook on b8. He grabs the the b-pawn!!! While still in triumphant chock I see his hand move it to b5 and press the clock.

Now I can feel my face heating up. I look it all over. Again. 10 times at least. All variations. There are so few. I spend a full minute, though I was deadly certain before I even started.

My heart sings with extreme joy. I know how the football player feel when scoring a goal.

But still nobody could tell. I do my move, now maybe even shaking a bit. But it doesn't matter.

42.Raf7

It's over mate. Over!! Can't you see it? What will you do? Resign grandmasterly, to save a bit of your honour? Or go for 42.-,Kh5
43.Kh3, g4+
44.Rxg4
and mate in 2 more moves?

42.-,bxc4

Hah! Fool! You have seen nothing!

Or - maybe you have seen it but hope that my last 2 moves were random luck and _I_ might not see your end?

Now I look up, look at your face. Will our eyes meet in a microsecond, saying everything, before you instantly look down, pretending to study the position?

No. Your eyes are on the board already, your face calm, satisfied. You believe you may win.

I think it over one more time. It doesn't take one second. The next move is a little faster than usual.

43.Rf4+

I instantly look up at you again. No more poker needed. Two seconds pass by, then your face changes expression. Pain and terror. You consider resigning, but instead we play the last couple of moves. With some degree of sportmanship you say 'Cute mate!' We shake hands, sign scoresheets.

The threat of defeat, humiliation and depression is all over and I leave the tournament room flying on a pink cloud. The world is beautiful and there is no sorrow anywhere, only joy, surplus, friends and blue skies. No shot of any drug could have made me happier.

Then, of course, there were the times where you lost.

Jul-17-08  lonepsycho: Whoo hoo! I got a Thursday! I feel special.

First try: 43.Rf4+ (g-pawn is pinned) Kh5 (only move) 44.g4+ (protected by the f-Rook) Kh4 (only move) --- a nice mating net is started; but in this line, no coup de grace is possible.

Then I realized that the rook had to be sacrificed in order to force the King to trap itself. Check and mate!

Jul-17-08  capybara: I got today's puzzle. I saw Rf4+ straight away, but it took longer to see the Rook sacrifice.
Jul-17-08
Premium Chessgames Member
  fm avari viraf: Many decades ago, I happened to solve this puzzle but what pleases me is that my memory is still not in oblivion. The Black King is caught in a mating net & White uses the Pin Tactics 43.Rf4+ Kh5 44.Rh4+ gxh4 45.g4#
Jul-17-08  Geronimo: <zorts> I work for an international humanitarian agency as a specialist in the law of armed conflict (Geneva Conventions, etc).

And I'm a patzer.

Jul-17-08  Kasputin: Material is even. White has rooks doubled on the 7th rank and black's king looks like it has very little room. If black gets a chance, something might happen with the c4 pawn capturing the d3 pawn - also something could happen with the b8 rook moving to b2 or b1. But it is white's turn.

43. Rf4+ looks like an obvious candidate move to examine first. Black's reply is forced:

43 ...Kh5
44. Kh3
Regardless of whether black takes the f4 rook with the g5 pawn, mate is threatened with 45. g4#. There is no black rook move that can stop this. Black only has...

44 ...g4+
45. R(f4)xg4
Now mate is threatened next move with 46. Rh4#

To me, it looks like black has only 2 moves to stop an immediate mate. 45 ...Rxe4 and white can simply play 46. Rxe4 and then 47. Rh4# cannot be stopped.

Alternatively, black can try 45 ...Rg6. This might be tricky. I think the correct response is 46. R(4)xg6. Nothing that black does can stop the next move: 47. g4#

Black could probably still win with 46. R(7)xg6. But this looks inaccurate and messy to me as black can play 46 ...Rb1 in order to try and swing the rook over to h1. White simply prevents this possibility and delivers mate immediately with 46. R(4)xg6 followed by 47. g4#

Jul-17-08  Kasputin: Well I found a forced mate in 5 instead of a forced mate in 3. Oh well.
Jul-17-08  YouRang: Here is the 'similar puzzle' that I referred to before:


click for larger view

White to move and mate in 3

Jul-17-08  SpoiltVictorianChild: I thought this was way easier than yesterday's...
Jul-17-08  Lightboxes: <YouRang: >

Rh3+, Pxh3
Kf3, Pg4+
Kg4, Pg3
Pxg3#

Jul-17-08  Artar1: I nailed this one right away with my eyes only. I guess I'm about a medium-level solver. Now if I could only do the advanced ones as well! Overall, a really sweet mate.
Jul-17-08  YouRang: <Lightboxes> Right (I guess it was mate-in-4, sorry).

Once you find 1.Rh3+, the rest falls into place as black's moves are all absolutely forced, ending with:


click for larger view

Jul-17-08  jacklovecaissa: usually, this is the time i'll sarcastically questioning some of the claims here but...

for thursday... this is easy!!!

Jul-17-08
Premium Chessgames Member
  butcher 4: It was clear.
Jul-19-08  patzer2: White pulls off a mate-in-three for the Thursday, July 17, 2008 puzzle solution with 43. Rf4+!
Oct-31-11  syracrophy: A more recent example of this matting pattern from the game E Can vs J Baules, 2008:


click for larger view

<32...?>

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