Author: Jeroen van Dorp
Date: 15:27:49 08/05/01
Go up one level in this thread
My compliments with the draw, although I think you're likely not very satisfied
with the lack of a fight CT14 put you up with. I have drawn chess programs quite
some times, and mostly because of draw by threefold repetition or a single
instance perpetual check. It's not that satisfying - for me at least; but - a
draw is a draw.
I copied your game and let my CT14 copy assess the situation after say 21...Nd7.
Indeed it comes up with only this move. It doesn't change it's mind. I let it
analyse somewhat longer than the 108 seconds your movelist indicated (I have a
PIII@840MHz) and I used the ChessPartner version of CT14, not the ChessBase
engine.
[D]2krr3/pp1nqpp1/1bp1p2p/4N2P/2PP4/2B3P1/PP2QP2/2KR3R w - - 0 22
00:00:00.5 -0,15 9 63818 Nf3
00:00:01.4 -0,15 10 148875 Nf3
00:00:02.5 -0,15 11 310571 Nf3
00:00:05.2 -0,15 12 745163 Nf3
00:00:13.9 -0,15 13 1967701 Nf3
00:00:30.2 -0,15 14 3123585 Nf3
00:01:02.6 -0,15 15 7455719 Nf3
00:02:18.2 -0,15 16 20537908 Nf3
00:04:38.9 -0,15 17 44850656 Nf3
However I wonder why there's no analysis of a variation; it only shows Nf3.
There are other possibilites,like 22.f4 or 22.Rhe1, with equal play as well.
Might it be a CT14 glitch of some kind?
Well, whatever, if so, a glitch in a program is like a weak spot in a GM and so
the draw was well deserved.
I played CT14 myself today and I found it an exciting game.
I lost it IMO because of a (in my eyes:)) small tactical mistake:
[D]3r2k1/pp4pp/4p3/4bp2/8/3rP2P/PPRB1PP1/3R3K w - f6 0 26
Here I played 26.g3? to make space for my king to support the odd couple around
d1. However -as chess programs are really grandmasters in this - it found out
how to exploit the situation and win the pawn at b2.
It took me quite some time and additional analysis from CT brother in arms
Shredder 5.32 to find out it should have been 26.g4 with the intention to get
the black bishop off the diagonal a1-h8 through f4 and g5.
After the deceased pawn I decided CT14 has to show how to win.
Sadly -and of course- it did.
Here's the somewhat lengthy PGN, with first my own thoughts inserted -before
analysis- and between brackets some after game analysis.
(For the desperate with nothing to do: through the "How does the patzer think"
link on my chess site at http://zip.to/jeroen people can replay the game online
if they want)
[Event "level 60' each"]
[Site "Utrecht"]
[Date "2001.08.05"]
[Round "-"]
[White "Jeroen van Dorp"]
[Black "Chess Tiger 14.0"]
[Result "0-1"]
[ECO "E51"]
[Annotator "Dorp,van,Jeroen"]
[PlyCount "84"]
[EventDate "2001.08.05"]
{Nimzo Indian, Rubinstein. Notice that the variations and annotations between
brackets contain analysis *after*the game.} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3
O-O 5. Nf3 d5 6. Be2 c5 7. O-O Nbd7 {Now in the Nimzo black wants to control
the center with it's pieces rather than with it's pawns. By taking my knight I
will have a double pawn on the c-line, but swapping on d5 and next black
taking on d4 with me taking back won't give that problem anymore. Now let's
play Qc2 and see that he needs to start exchanging.} 8. Qc2 cxd4 9. Nxd4 {
as exd4 will leave me with an isolated pawn on d after dxc4.} 9... dxc4 10.
Bxc4 Ne5 11. Be2 Bd7 {It is going for Rc8 and Qc7 pushing on my knight at c3.
I have had these situations before, I must give more attention to guarding
that field.} 12. Nf3 {Now first it has to woory about it's knight on e5, and
exchanging on f3 will leave my white bishop pointing at b7. That will keep him
busy.} 12... Qc7 {
Oh well,I'm gonna exchange anyhow, as that knight is too far advanced.} 13.
Nxe5 Qxe5 {So now he has a new opportunity to play Rc8 and threaten that
knight. Also my queen is really undefended. However, I can counter the threat
with Bd2 followed by Rac1. So I should look for a more attacking move, which
will divert my opponent for the time being from attacking.} 14. Bf3 ({
A better solution would have been} 14. Qb3 a5 {to both save b4 and b7...} 15.
a3 Bc5 16. Qxb7 $11) 14... Qc7 {
Now I should take care of covering the knight and covering my queen as well.}
15. Bd2 Bd6 {Is there any danger after h3? I don't like g3 as it weakens the
pawn structure and lefts my bishop on f3 undefended.} 16. h3 Bh2+ {Hmmm, is tha
t all it can come up with? I can't close it in for now with g3- Bxg3 - and I
exchange two pawns against it's bishop with a queen at g3. No. But it will go
anyhow after Kh1.} 17. Kh1 Be5 {Teaming up again for that knight. Also
remember that b2 is not really strong. First things first.} 18. Rac1 Rfd8 {
Now what's that supposed to be? Obviously for d2 after playing Bb5. If I
defend that with Rfd8 it will be able to play Be2. But no real threat. I can't
find out the idea behind this. It's time I took some counteraction. I prefer
moving that knight away to realease the pressure. If it swaps queens I will
end up with both b2 and d2 defended by the rook, so that's no problem. I'll
play Ne4. If he doesn't take at once I always have Ne4xf6+ with maybe some
possibilities.} (18... Rac8 {was a better move, so it seems after the game,
leaving the knight on c3 inoperative.}) 19. Ne4 Nxe4 20. Bxe4 Bb5 {Now this has
a lot of tactical abilities. Look at my bishop on d2 to a5 and the queen and
rook on the a5-d8diagonal. And look at the threat on h7. Too bad the king can
go to h8 or else I tried something with Bxh7+ Kf8 Bb4+; but no, that bishop on
e5 is still guarding the queen. And it won't leave as long as it's the only
piece defending it's queen. I have to secure Rf1 first.} 21. Rfe1 {
because now Rd1 Be2 is apossibility I don't like.} 21... Qxc2 22. Rxc2 Bd3 {
Oops. Is this dangerous? No, just take it.} 23. Bxd3 Rxd3 {
Now there's another oportunity at the back row. I should try to press there.}
24. Rec1 Rad8 {Oh damn, this is wrong. Now I pinned both my bishop and the
rook defending it to it's place. I must play Rd1} 25. Rd1 ({After all,} 25. g3
{was directly possible, because of} 25... Rxd2 $2 26. Rxd2 Rxd2 $2 27. Rc8+ Rd8
28. Rxd8#) 25... f5 {Look, if black is going for *my* back rank I'm stuck as
well because of that bishop on e5. I must create some space and walk my king
to that threesome to do some defending work. It will bring me closer to the
center as well.} 26. g3 $2 ({Analysing after the game I think this is the
moment where black was able to go for the pawn. Strange enough g3 was only one
field to short as} 26. g4 $1 {because now} 26... R3d6 $2 (26... Kf7 27. Kg2 $11
{etc.}) 27. f4 Bf6 28. g5 $1 {Nice, Shredder found it for me after the game.}
28... Be7 {and the bishop can't chase the b2-pawn anymore.}) 26... R3d6 {
Okay, now it will target for a2. I can try b3 leaving both pawns defended, but
before that I *must* get my king to the rescue.} 27. Kg2 Rc6 {Right, why
I see this? If I swap rooks and play b3 I will lose my bishop because of Bc3!
I will lose that pawn on b2, I can't defend all.} 28. Rxc6 bxc6 29. Kf1 {
I have to leave that pawn. Ouch, this hurts.} 29... Bxb2 30. Ke2 {Technically
speaking black has won, as he has an extra pawn. But it better make it till
the end.} 30... Rb8 {I have a few options, although pinning the bisho is best.
It is now going for the a-pawn. But it has to use a black field to ciome there,
and I can cover that.Maybe Ba5 is an option. Rb5 won't help as a5 is covered.
I'll take the safe road and go for the pin.} 31. Rb1 Rb6 {I did expect that.
Now take care not to thread on black fields with my king so he can give me a
discovered check. Admonish the troops, bring in the king.} 32. Kd1 Kf7 {
Yeah, right, now should I attack with Kc2? Or play Bc1? After a swap black
could play Rb2 and attack both a2 and f2 -pawns. I have to advance thatf2-pawn.
} 33. f3 (33. Bc1 Bxc1 34. Kxc1 Rxb1+ 35. Kxb1 {but it's lost anyhow.}) (33.
Kc2 {would have been the best after all, I decided after the game:} 33... Be5
34. Rb3 Ra6 35. a3 Rb6 {a little better but not much difference.}) 33... Be5
34. Rxb6 axb6 35. f4 Bd6 {Now it's running for my king.} 36. Kc2 e5 37. h4 b5
38. Kb3 Ke6 {No, he can slip through my pawn formation, I'm lost.} 39. a4 bxa4+
40. Kxa4 Bc5 41. Kb3 exf4 42. gxf4 Kd5 0-1
Good chess.
J.
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