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Robby Adamson vs Jon Burgess
United States Chess League (2008), Internet Chess Club, rd 1, Aug-25
Sicilian Defense: Kan. Modern Variation (B42)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-26-11  Nilsson: Because White is a piece up,
24.gxf7+ Kh8 25.fxe8Q Rxe8 26.Bc2 Bxe4 27.Qxe4 Qxd2 28.Qh7+ mate. /JN
Sep-26-11  stacase: So many possible moves for White to make, it took a while to find the correct one.
Sep-26-11  Artsemthon: 26.Rxg7+ Kxg7 (26...Kh8 27.Qxh6#) 27.Qxh6+ Kg8 28.Qh7#.
Sep-26-11  sevenseaman: A very clever POTD. Too many options confound the solver but not everyone will realise that the N on e4 is pinned.

The most direct <26. Rxg7+> gives Black a lockjaw. A wise one will resign as soon as White extends his hand towards the R, even if to shoo away a fly.

Sep-26-11  Patriot: 26.Rxg7+ Kxg7 27.Qxh6+ Kg8 28.Qh7#

Very easy indeed.

Sep-26-11  zb2cr: A Rook sacrifice on Monday to begin the week, great fun! 27. Rxg7+, and mate in 2 more moves.
Sep-26-11
Premium Chessgames Member
  agb2002: The material is even.

Black threatens 26... Nxf7.

The dark squares around the black king are not properly defended, in particular g7 and h6. Therefore, 26.Rxg7+ Kxg7 (26... Kh8 27.Qxh6#) 27.Qxh6+ Kg8 28.Qh7#.

Sep-26-11  abuzic: 26.Rg7+ Kxg7 27.Qxh6+ Kg8 28.Qh7#
this is the theme of today's 26.? mate in 3 puzzle.

If we go back to move 23.
White captured 23.Nxe4, pinning own N+Q+K and retreating from strong position. Black instead of 23...Qe6? could simply answer 23...Qxg6! and equalize:

So 23.Nxe4?! Qxg6! now if 24.Nf6+? gxf6 25. Rxb7 e4 <(25.Qxb7 Qxf7 26.Rg1+ Kh8 27.Qxa8 Nb7; 25.Bxg6 Bxf3+ 26.Kg1 Bc5+ 27.Kf1 Nxf7; 25.Rxf8+ Kxf8 26.Qxb7 <[26.Bxg6 Bxf3+ 27.Nf7]> Nxb7 27.Bxg6 Red8)>

White should have captured 23.Bxe4! with good advantage:

23.Bxe4 Qxd2 24.Rf1 is very strong threatening mate, if 24...Bd6 Rxb7 25.Qxg5 Rd7 with better position for white; (if black takes 25...Nxb7 leads to nice mate: 26.Bd5+ Kh8 27.Nf7+ Kh8 28.Nxh6+ Kh8 29.Nf7+ Kg8 30.Nd8+ Kh8 31.Qh5+ Qh6 32.Nf7+ Kg8 33.Nxh6+ Kh8 34.Ng8#)

or 23.Bxe4 Bc6 24.Nxc6 Qxg6 25.Rf5 and white has strong position.

On 23.Nxe4 Qe6 24.Rf1 Be7 25.Qh5:
25...Rf8? already black is under attack, could simply defend with 25...Bf8 but will still be inferior but no direct mate threats.

if 25...Nxf7 26.gxf7+ Kh7 27.fxe8Q Rxe8 28.Kg1!! threatenig Nc5+, Ng5+, Nf6+, Bxh6 and of course Qxe8, while <(28.Qxe8 Qh3! 29.Rf7 Qxd3 30.Rxg7+ Kxg7 and white has been freezed)> Qb6+ 29.Rf2 Rf8 30.Qxe5 and wins.

Sep-26-11  gofer: <abuzic> <If we go back to move 23.>

<White captured 23.Nxe4, pinning own N+Q+K and retreating from strong position. Black instead of 23...Qe6? could simply answer 23...Qxg6! and equalize:>

Okay, so we start with...

<23 Nxe4 Qxg6>

But after...

<24 Rxb7 ...>


click for larger view

Where does your plan go from here? I would suggest that black has little alternative but the following...

<24 ... Nxb7>
<25 Rg1 Qf7>
<26 Nf6+ Kh8>
<27 Qf5 g6>
<28 Rxg6 ...>


click for larger view

I don't see equality in this. I see problems for black! Perhaps we might get...

<28 ... Bg7>
<29 Bxh6 ...>

29 ... Rg8 30 Bxg7+ Rxg7 31 Rh6+ mating!

<29 ... Bxh6>
<30 Rxh6+ Kg7>
<31 Rh7+ Kf8>
<32 Nxd7+!>

Sep-26-11  LIFE Master AJ: 26.RxP/g7+ and mate in two. (QxP/h6+ and Qh7#)
Sep-26-11  LIFE Master AJ: And when I first looked at it, my initial instinct was to play BxP/h6 ... only after this did not pan out did I begin to look for something else.
Sep-26-11
Premium Chessgames Member
  kevin86: Harder than usual 4 a Monday;After the rook sac at g7,the queen will come to h6 and mate follows,either in one move or two,depending on whether black takes the rook or not.
Sep-26-11  Akavall: If I didn't know it was a Monday's puzzle, I might've missed it.
Sep-26-11  monopole2313: Nice "remove the defender." Go Scorpions!
Sep-26-11
Premium Chessgames Member
  Domdaniel: Simple, yes, 27.Rxg7+ is mate in 3. I'm sure many people saw it at once - as soon as you look at the Rook sac, it's obvious. There's only one subvariation, 27.Rxg7+ Kh8 28.Qxg6#

And yet this took me over a minute, which is forever on a Monday. Why? Too much time pondering other factors -- the pin on the Ne4, and whether it might be worth breaking it with a *King* move; the concentration of Black forces on f7; the possibility of Bxh6 or Qxh6; even the fact that the Black King and Queen are on the same diagonal ...

All of which is nonsense, of course. But as I've said many times before, paying too much attention to the day of the week - using it as a predictor for the type of winning move likely - is a double-edged skill. You may sharpen your tactics, but there are no Mondays in chess tournaments.

Well, yes, of course there are *Mondays*. Not in weekenders, though. Unless it's a holiday Monday. Um ...

Oh, you know what I mean. Beware of extradiegetic clues.

Sep-26-11  Strongest Force: I remember a young master who died as a teen by the same name as white. It was around 1978.
Sep-26-11
Premium Chessgames Member
  chrisowen: Rxp jar-head! Qxh6s chaffer it mightier than wafer.

Thin Kan the rook gosamer!

Inch air today gone split read h5 or dead slide fashion good game.

Sep-26-11  sevenseaman: <Dom> <extradiegetic clues>! Hmm...difficult to encompass! Which clues are extradiegetic? My browser doesn't even pick up the word.
Sep-26-11  abuzic: <gofer:.....

Okay, so we start with...

<23 Nxe4 Qxg6>
But after...
<24 Rxb7 ...>
Where does your plan go from here? I would suggest that black has little alternative but the following... <24 ... Nxb7> <25 Rg1 Qf7>
<26 Nf6+ Kh8>
<27 Qf5 g6>
I don't see equality in this. I see problems for black! Perhaps we might get...>

This is valuable analysis of the position;
My idea was that taking with the N 23.Nxe4 is inferior to 23.Bxe4.

I was considering 23.Nxe4 Be7; 23.Nxe4 Be6 or the unfortunate afterall 23.Nxe4 Qxg6 and settled for the last...

I followed the same line as yours. I looked into 27.Qe4+ but didn't consider 27.Qf5 at all which gives white a winning continuation, where black with best chances will remain with 2R+B for Q+B (after 27...gxf6) with a lot of work to analyze.

You already have nicely shown 27...g6 to lose immediately (even 28...Re6 does not save black).

Note that after 28...Bg7 it is mate in 7 after 29.Qh5.

So I resign the 23...Qxg6 option. Perhaps the other mentioned alternatives can do the job?

As I explained (to the best of what I can) that 23.Bxe4 wins but couldn't refute 23.Nxe4 in my post.

Sep-26-11
Premium Chessgames Member
  Domdaniel: <sevenseaman> 'Extradiegetic' is a lit-crit word that Jessica and I used to throw at one another. It means, roughly, 'outside the text/ story/ narrative'.

What I meant was simply that the day of the week is not part of what confronts you on the chessboard. It may be useful data, but it doesn't exist on the same level as the position.

Sep-26-11  BOSTER: <abuzic> <White captured 23.Nxe4, pinning own N+Q+K... Black could simply answer 23...Qxg6 and equalize> I guess that idea to equalize after Nxe4 is not wrong,but execution is not correct.

After 23.Nxe4 black should sacr. his queen and play 23...Bd5 attacking the rook f7.

Now if 24.Nxd6 Bxf3+ 25.Rxf3 Bxd6 26.Be4 Rb8
if 24.Nf6+ Qxf6 25.Be4 Bxe4 26.Qxe4 Nxf7
if 24.c4 Qxg6 25.Nf6+ Qxf6 26.Qxd5 Nxf7.

Sep-26-11  waustad: Looking up "extradiegetic" I ran into a lot of stuff about the narrator's level as opposed to the level of the action in a piece of fiction. I suppose that makes sense, since it is the cg level, not the game level.
Sep-26-11
Premium Chessgames Member
  al wazir: <Nilsson>: Thanks.
Sep-26-11  stst: Easy if one's on right track:
26.Rxg7+ (not Rxf8+) Kxg7
(IF Kh8, 27.Qxh6#)
27.Qxh6 Kg8
28.Qh7#
Sep-27-11  Nullifidian: I'm getting more and more absentminded about doing these puzzles. Now I've even missed doing one on a Monday.

Still, it's easy to see:

26. ♖xg7+ ♔xg7 (♔h8 27. ♕xh6#) 27. ♕xh6+ ♔g8 28. ♕h7#

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