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John N Sugden vs Raymond Keene
Thematic Match (1963), Dulwich (ENG), rd 2
Mexican Defense: General (A50)  ·  1-0
ANALYSIS [x]

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Annotations by Raymond Keene.      [407 more games annotated by Keene]

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Kibitzer's Corner
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Oct-05-13  Caissas Clown: Re"Not many people get to commentate at their own funeral." Ha ha !
It's a British thing , radtop - as Ray Keene demonstrates , we pride ourselves on our magnanimity.

After recognising the theme of cutting off the Black Q ,I considered ,but quickly dismissed,the incorrect 23 e6 ? I then found 23 Rf6 !! fairly easily, though must confess,I carelessly failed even to consider 23 d6.

You have to feel sorry for John :
23 Rf6!! is a terrific move , but will probably never get the same admiration as 19 Rf6 !! here:

Fischer vs Benko, 1963

Oct-05-13
Premium Chessgames Member
  offramp: I now realise that GM Keene lost this game. I repent in dust and ashes.
Oct-05-13
Premium Chessgames Member
  patzer2: Got the first two moves 23. Rf6!! exf6 24. Bh6, but had difficulty visualizing the follow-up to this Saturday's puzzle.

Black resigns in lieu of 32...Kd8 33. Qd7#. If 29...Qxe6, to prolong the game, the quickest way to mate appears to be 30. Qg7+! Ke8 31. dxe6 .

Oct-05-13  Sho: "Thematic Match" What does that mean? Thanks.
Oct-05-13
Premium Chessgames Member
  keypusher: <Sho> A match that features a particular opening or sometimes even a particular starting position. I think they were more common a hundred years ago, partly as a way to preserve the gambit openings that were then passing out of fashion. See Benzol's comments on this page:

Lasker vs Chigorin, 1903

There were also thematic tournaments.

Abbazia (1912)

Oct-05-13
Premium Chessgames Member
  chrisowen: Not one for give rook affable scope on you have i cuff f1 free flows f6 rug leap in block lines of communicado it eddy a wave in blew again efface be a 21...Nxe5 goes couple pawns up should hold black decides on back you go a week offering b2 allows maps alma glad queg3 in ar good jangle it her bind in he rack a cycle b6 aim in no time like for rook f6 our a fog over sense b6 clams up pawn ha shin e7xf6 cream drives away in light it trouble in makes b6 inaccessible for rook give que sera sera in pour cross fade lines b6 for success pace a f6 ogle b6 winning her monarch unless e7 free success re dip in rook badge of honour piece up lie of land g7 bishop expose c1 on demand h6 and clop pawn down in pyre seek on c4 glimmer of hope a king's side hankie spin h1 web encircles!
Oct-05-13
Premium Chessgames Member
  chrisowen: Side on g7 marmalise bishop knack in f8 cross be rook c8 a meld a kind mission safe in baggage rook que beefs alonger g8 in knowing when blood pawns and horse felds ha pen in couples g7 once g4 swipe off bind rook over ok be cinch g8+ kind sense knight feels it on too kind giving b2 good room over g3 be debonair couple g3 and b6 allow f6 comb in wave e7 offer bishop mould h6 evermore see bade g8 influx and c4 inceed it hopeless cause e6 in horse pawn queen's enough gambled g8+ bad see a blip in wades e5 e6 key safe good horse in fell f5 arise d8 in faces off crab senseweaved it tank in que up g8+ a den around king's ledge a cubby c7 it edgy f7+ bonafide in bid again carefree d8 when engage d7+ crow in f1 hoof f6 family bishop came good a h6 plough g7 sander d7 good finish.
Oct-05-13  Ratt Boy: I commend chrisowen on programming his computer with a random-word generator.
Oct-05-13  diagonalley: <Ratt Boy> commend!?! ... hardly an appropriate accolade for someone who should patently be sectioned!
Oct-05-13
Premium Chessgames Member
  Penguincw: I was thinking of 26.Bh6, but not sure what to do after Qxh6.
Oct-05-13  mistreaver: Saturday. White to play. Very Difficult. 23.?
The move i instantly wanted to play is:
23 e6
The virtue of the move is that suddenly white threatens Nf5 because the bishop is cut off, and Bh6 because queen is cut off. The negative sides are that it maybe doesn't work.
Black has various options:
A) 23... fxe6
and now comes the tricky part. I am not sure what happens after: 24 Bh6 c4+
25 Re3 Rxf1+
26 Kxf1
But it would appear that white wins.
B) 23... Kh8
24 exd7
and white is a piece up it would seem.
I will stop here, time to check and see.
---
Ahhhh, Rf6 is much more effective, my proposal meets the following refutation: 23 e6 fxe6
24 Bh6 Rxf1+
25 Kxf1 Rf8+
26 Nf3 Rf7
and there is no mate. Here white probably maintans the balance in some way, but it makes no sense when he had clear winning contuination 4 moves ago.
Oct-05-13
Premium Chessgames Member
  kevin86: No way in a month of Sunday that I could find that brilliant move! 23 Rf6!!
Oct-05-13
Premium Chessgames Member
  Once: <kevin86: No way in a month of Sunday that I could find that brilliant move! 23 Rf6!!>

Might I, ever so politely, beg to differ?

23. Rf6 is a great move, a well deserved Saturday "difficult" puzzle and I have to admit that I didn't spot it. But I don't think it is really so hard to spot, if we put enough time into it.

From the opening position, the move we really want to play is 23. Bh6 threatening an unstoppable mate on g7. We don't need to be afraid of Bg4, as we can capture twice on that square with rook and queen.

But we can't play 23. Bh6 immediately because of 23...Qxh6. So that gives us a plan to think about - can we jam something on the sixth rank to block the black queen from the h6 square?

There are four moves to consider. 23. Ng6 is clearly not going to win any beauty contests. 23. e6 doesn't work because it gives the Rf8 the f7 square from which to guard g7. My idea of 23. d6 does work, but not as well as the fourth option which is 23 Rf6.

All in all, it's a great move, but not one which is impossible to find, IMHO.

Oct-05-13  peristilo: I think that calculating up to move 27.Rxg7 is enough to solve the problem cause it's clear that white is winning even if a mate doesn't come soon.
Oct-05-13  peristilo: I am surprised some guys find this puzzle very difficult. I am not a strong player, but I think that finding a mate idea is easy in positions like this one.

All white pieces are well placed for an attack. We only need a Bishop on h6, right? But there's an annoying black queen protecting that square.

What to do? Well, 23.e6 is easy to spot, but it doesn't seem forcing enough. We know we should try to find a better move after finding a good one.

So, let's not be too happy with 23.e6 and let's work a bit more. Hum...Aha!!! 23.Rf6!! Logical! And brutal!

Is there a defense? NOPE! The follow up is easy, you guys must agree. So, the the hardest part is to find the first move. Is it really so hard to choose 23.Rf6 as a candidate move?

One thing I've learn about tactics is that you should never go too deep in calculation before a brief consideration of all forcing moves, especially the craziest ones.

Oct-05-13  devere: 23.Rf2 wins. 23.d6 wins. 23.Nf5 wins. 23.Rf6!! is best. Nice move!
Oct-05-13
Premium Chessgames Member
  Jimfromprovidence: I got 23 d6 as did some others. It wins material after, for example, 23...Kh8 24 dxe7 Rg8 25 Bxb2 Qxb2 26 Rb1!


click for larger view

Black has to lose his queen for rook and knight because if he moves his queen with say 27 Qa3, he loses after 28 Rxb8 Rxb8 29 e6!


click for larger view

Oct-05-13  King Sacrificer: I found <Rf6> but missed that simple <Rxg4> idea and delayed <Bh6>. Hopelessly thinking for an hour to prevent <Bg4> and <Kh8>.
Oct-05-13  paramount: very nice very tricky. Although its not extraordinary.

First i thought about 23.e6 to block the queen but after calculating long enough after 23...fxe6 24.Bh6 Rxf1+ 25.Kxf1 Rf8+....now i took very long time here

26.Nf3 Rf7...and this is actually my first choice. i thought after 27.dxe6 Bxe6 28.Bxg7 Rxg7 29.Rxe6 Qxe6 30.Qb8+ Kf7 31.Qxb2....white has an advantage with 2 knights against a rook but apparently NOT. Apparently its almost equal....so i made a mistake here.

26.Rf4 Rxf4 27.Bxf4 Qb4 28.Be5 Qg4 29.Qxg4 hxg4 30.dxe6 Bxe5...two pawns advantage for black is overwhelming.

26.Ke2 Rf7 27.Bxg7 Rxg7 28.Qf3...im afraid of 28...Qa5 29.dxe6 and white king in the exposed position...so i think its bad.

26.Ke1 clearly bad 26...Nd3+ 27.Qxd3 Bxh6 28.Qg3+ (28.Nf3 Qb2 29.Re2 Qc1+ 30.Nd1 Bb5...black is much better than white) Bg7 29.Nf3 Qa5 30.Re3 exd5...now centre connected passed pawns just too much for white.

Took me more than one hour and a half to calculate and eliminate all those lines and found the first line (26.Nf3 Rf7) to be my answer just knowing its all wrong. Of course to confirm this i used assists but after i calculated all those lines.

So all this calculating sections are plausible if you supposing in the match and find mistakenly 23.e6 move is promising regardless its the best move or not but of course it would be at odds if you found the right move 23.Rf6!

That i failed this day...by no means that i have done the best effort because its a puzzle, there are other purposes that just finding the best move but also training your ability to calculate, but i am no doubt at all would find 23.Rf6 if i was in the real match.

And not to mention that i also missed the move 26.Kg1 and subsequent moves. If only i know how simple the answer is Rf6.

Oct-05-13  mdz: There are at least 2 more ways to win (after 23. Rf6). Instead of 28. Rf7, W also wins with 28.d6 Ke8 29. e6 fe 30. Re7+ Kd8 31.Qg8x Instead of 29. e6, W also wins with 29. Qg7+ Ke8 30. Qf8+ Kd7 31.e6+ Kc7 32.Qe7x
Oct-05-13  GrandMaesterPycelle: I got 23.d6, which may be good enough, but is arguably less spectacular
Oct-05-13  Patriot: <<morfishine>: I didn't consider 23.Rf6. What I did see was <23.e6> failing to see that Black holds after 23.e6 fxe6 24.Bh6 Rf7> I made the same mistake. Houdini suggests 24...Rxf1+ 25.Kxf1 Rf8+ 26.Nf3 Rf7.
Oct-06-13  LIFE Master AJ: Wasn't Abbaz on the KG?
Oct-06-13
Premium Chessgames Member
  Benzol: <AJ> Do you mean Abbazia (1912) ?
Oct-06-13  LIFE Master AJ: yes .................
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