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Craig van Tilbury vs Darryl K Johansen
"Darryliction of Duty" (game of the day Nov-23-2005)
Bled Olympiad (2002), Bled SLO, rd 1, Oct-26
Old Indian Defense: Two Knights Variation (A54)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Aug-19-10  Patriot: I decided on 15.d6 but also liked 15.Ne6. I never considered 15.Nf3, or even the possibility that black has the option of castling!
Aug-19-10  BwanaVa: Craig heart attack last week? I had no idea. I played in tournaments with him back in the 1970's...
Aug-19-10
Premium Chessgames Member
  kevin86: The key:white advances by retreating.
Aug-19-10  perhaps: Why:26- 0_0_0 and not Qd6+ ??? As "al wazir" and "An Englishman" also asked? Could some one give us a clue? It seems this move has many advantages. Thanks
Aug-19-10  scormus: Quite a complicated position, but no more so than I feared after yesterday. I fancied 15 Ne6, slightly preferring it to the immediate d6, though that would be soon on the cards. I wont try to match <agb2002> analysis

15 Nf3, didnt occur to me. Looked like W made a bit of a meal of it at the end

Aug-19-10  Patriot: <<perhaps>: Why:26- 0_0_0 and not Qd6+ ??? As "al wazir" and "An Englishman" also asked? Could some one give us a clue? It seems this move has many advantages.>

26.Qd6+ is also winning. 26...Kb7 27.Qxd7+ . White needs to be careful not to play 27.Qxf8? Ba5+ 28.K (moves) Rxf8. But white decides to use his time developing while getting another piece in the attack. 26.O-O-O works really well since the light-square bishop has no good squares. For example, 26...Bc8/Be8 27.Qd6+ safely picks up the rook. After 26...Rf6 27.Qxf6 Bxf6 28.Rxd7, white is a clear piece ahead while managing to trade down.

Aug-19-10  Marmot PFL: Just didn't look long enough at 15 Nf3, and would have played 15 d6 then backed it up with 0-0-0.
Aug-19-10
Premium Chessgames Member
  chrisowen: Aahed alas black scar let straw slip through his finger. Black bury this game with Nxg4. No good is f5 faith does dessert him. 10..Qd7 trap the queen blowing d5 mind you Ng5 sets the tone. Pawn leg it thinking he want to be free. Base balance out Qa4 sets up quiet move Nf3 difficult pawn reticence. E4 tenant looses on the spot press in knight and white steam ahead. Mop up launch pad steed mets justice. Pack of horses drop Nd4+s a line caught out priveliged sac nearest.
Aug-19-10  lost in space: <Wow. I never even considered the key move. Shame on me.>

Me too, sigh. Often I am not able to see excellent/winning backword-moves. Very big SIGH.

Aug-19-10
Premium Chessgames Member
  benveniste: I _did_ look at:
15. Nf3 O-O-O
16. Nxe5 Qe8
I then proceeded to totally miss 17. Nxa7.
Aug-19-10
Premium Chessgames Member
  DarthStapler: I picked d6 instead
Aug-19-10
Premium Chessgames Member
  Jimfromprovidence: <benveniste> <I _did_ look at: 15. Nf3 O-O-O
16. Nxe5 Qe8
I then proceeded to totally miss 17. Nxa7.>

I looked at this line too. At move 15, black's queen has to stay rooted at d7 in order to protect against the double check, Nc7++. But the tempo it takes black to castle allows 16 Nxe5,below.


click for larger view

Now the queen is in jeopardy and has only 1 safe square, at d8.

Next, white has 17 Nxa7+ or 17 Nc6!


click for larger view

The knight is untouchable beacuse of 17...Bxc6?? 18 Qxa6, with forced mate. Now white should be able to win the a pawn plus the exchange.

Aug-19-10  ZUGZWANG67: I missed it and won't reproduce what I considered, though it is similar to many of "regular moves" beginning with 15.d6 Rb8 (because the BQ can't take a WB at b7) 16.Nc7+ Nxc7 17.dxc7 Rc8 18? and from here I'm lost in deep fog.

In most of my lines there was many Black's replies that were not forced. But I'm wondering whether 15...e4 was really forced in the actual game. I think that Black could simply sacrifice the pawn with 15...0-0-0. The immediate consequence of that statement (if it is flawless) is that today's puzzle was a "simply-win-a-pawn-puzzle".

Aug-19-10  scormus: W's continuation from 15 Nf3 is rather convincing, but is there anything wrong with 25 Ra3? Its the move Foreman would have played (and almost always won)
Aug-19-10  YouRang: Had trouble with this puzzle, and never even looked at 15.Nf3 (which seems so simple and logical now) :-\

I went with 15.O-O-O, realizing that it almost certainly wasn't *the* solution, but it qualified as a decent move to support my passed d-pawn and connect my rooks. I even threaten d6 with Rd5 to follow, which looks like a headache for black.

Aug-19-10
Premium Chessgames Member
  ajk68: I didn't particularly care for the move a4. It trapped in the queen. With how poorly coordinated black's pieces are at that point, it makes more sense to keep the queen on the board for all its forking and double-attack possibilities.
Aug-19-10  ZUGZWANG67: I have suddenly realized that 15.Nf3 0-0-0? is good for 2 pawns instead of only one: 16.Nxe5 Qe7(e8) 17.Nxg6 hxg6 18.Nxa7+. Of course in case of 16...Qe8 W must play 17.Qxe8 before intending anything else. So instead of merely being a "one-pawn-puzzle", it is a "two-pawns-puzzle".
Aug-19-10  Cibator: I know it's irrelevant, but shouldn't we have been told whether or not White is able to capture the Pc5 en passant?
Aug-19-10  felixd: Wow!!! Nf3! Who would have considered this move? It is one of the best puzzles I've seen here on Chessgames, and it's probably one of the first times that I don't even consider the winning move...

:)

Aug-19-10  wals: 4...e4. weakens Black's position.+0.51. better, exd4, Nbd7.

7...Nxg4.intent on picking off a pawn but fails to bring pieces out. +0.99.

8...f5.pawn move.,no piece move,(eg Nc6,Nd7). +1.37.

9...c6.amazingly this move is the least damaging,others incur stiffer penalties. +1.59. (Qc8 is +1.66).

11...c5.+2.32.
Better, Bf7 +1.64 or h6 +1.67.

13...Ne5.+3.73.
Alternatives, none hopeful,

Analysis by Rybka 3 1-cpu: depth 15:

1. (2.31): 13...Rd8 14.h3

2. (2.54): 13...Rc8 14.Bxd6

3. (2.56): 13...Rb8 14.h3 Nf6

4. (2.60): 13...Nf6 14.Ne6 Kf7 15.Nxd6+ Bxd6 16.Qxd7+[] Nxd7 17.Bxd6[] Kf6 18.0-0-0 Rae8 19.Bg3 Bh5 20.f3 Bf7

5. (2.66): 13...h6 14.Ne6[] Ke7 15.Bxd6+ Kf7 16.Bf4 Kg8 17.a3 Be7 18.Qc2 Bf6 19.Bh3 Kh7 20.Nd6 Bg5

15...e4.+8.00. deeper into the mire.

Black's position worsened but had some relief when White blundered, 27.Qxf6.+6.63.(better Rd6 +11.64)but with no hope of improvement resigned on move 28, a Rook down.

Aug-19-10  M.Hassan: I was concentrating so much on Nc7+ and Nd6+ and getting to no marked victory that I did not see any other move. Plain and simple: Could not solve it
Aug-20-10  LIFE Master AJ: < Aug-19-10 agb2002: <LIFE Master AJ: ...

15.Nf3!,

A move that contains a strange chess paradox - White retreats ... in order to attack! >

A recurrent problem of mine. I wonder whether I should analyze the position sideways...>

Sometimes, I think the only thing that works for me ... is to stand on my head! (And even that does not always do the trick.)

Aug-20-10  LIFE Master AJ: <Aug-19-10 <<Cibator:> I know it's irrelevant,> but shouldn't we have been told <whether or not White is able to capture the Pc5 en passant?> >

That's a good question ... and one I have often wondered about myself. (If you are good at retrograde analysis - and I am NOT - then you maybe can figure it out.)

Aug-20-10  LIFE Master AJ: <Aug-19-10
<<Robin01:> <LIFE Master AJ>> Thanks for the analysis.>

OF COURSE - you are VERY welcome. (Thanks for the positive input.)

Aug-20-10  CHESSTTCAMPS: I came to the puzzle late and also chose 15.Ne6 without even considering the text.
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