Friday, February 18, 2011

A Tale of Two Pawns

I really like this game, but I have to admit that my attack was made possible by my opponent keeping his d-pawn un-moved for too long. After the game, Houdini and Rybka also criticized me for leaving my f-pawn still – true, but when I pushed it, things really started to move!


perrypawnpusher - Frele
blitz, FICS, 2011

1.e4 e5 2.Nf3 Nc6 3.Bc4 h6


The Semi-Italian Opening.

4.0-0 Nf6 5.Nc3 Bc5


The Semi-Itlian Four Knights Game.

6.Bxf7+

The Semi-Italian Four Knights Jerome Gambit.

6...Kxf7 7.Nxe5+ Nxe5 8.d4 Re8


One of a number of "okay" defenses in this line (solid strategic idea, keeps Black's advantage) that still are not "best". Black develops his Rook and prepares to castle-by-hand.

9.dxc5 Kg8

Black immediately went after the forward White c-pawn with 9...b6 in  perrypawnpusher - catri, blitz, FICS, 2010 (½-½, 42) and with 9...d6 in perrypawnpusher - louarn, blitz, FICS, 2010 (1-0, 49).


10.f4 Nc6


This retreat seems okay to me, but after the game Houdini preferred 10...Nf7. The advance 10...Nc4 proved unfortunate after 11.e5 Nh7 12.Qd5+ Kh8 13.Qxc4 in Wall - Santiago, FICS, 2010 (1-0, 28).


11.e5 Nh7 12.Qd5+

I admit that I was mostly looking for the cheapo 12...Re6? 13.f5 with this move; but the check does little harm.

12...Kh8

White has locked down Black's d-pawn, and that is why most of Houdini's post mortem suggestions for the second player included playing ...d7-d6, anyway, even if it required temporarily sacrificing a pawn. Black cannot afford to play the game without his Queen Bishop and Queen Rook.

13.Bd2 Ne7

While Houdini holds that this still gives Black an edge, it prefers 13...d6 14.cxd6 cxd6 15.Qxd6 Qxd6 16.exd6 Bf5 17.Nd5 Rad8 18.Rfe1 Nf6 19.Nxf6 Rxe1+ 20.Bxe1 gxf6 21.Rd1 Bxc2 when Black's extra piece outweighs White's two pawns.






analysis diagram







14.Qd3 Rf8


The recommendation was still 14...d6.


15.f5 Nc6



The loss of time with this Knight gives White tactical chances.

Still, against both 15...b6 and 15...d6 White now has 16.f6!? with an even game, maybe a bit more.

16.Rae1

Houdini suggested, instead, 16.f6 – a move that I was preparing, something that I didn't want (like in earlier games) to rush into.

Its analysis shows White taking advantage of a lead in development and the available tactical nuances – to achieve a winning endgame: 16...gxf6 (here, the computer dismissed the pawn grab that attacks my Queen, 16...Nxe5, with 17.fxg7+ Kxg7 18.Qg3+ Ng6 19.Nd5 vacating c3 for the dark-squared Bishop Ng5 20.Bc3+ Kg8 21.Qd3 Nh4 22.Kh1 Ne6 23.Bf6 Qe8 24.Ne7+ Wow) 17.exf6 d6 18.Nd5 Be6 19.Bxh6 (the real reason behind 16.f5-f6) Rf7 20.Rad1 Qd7 21.Bg7+ Rxg7 22.fxg7+ Qxg7 23.cxd6 cxd6 24.Nf4 Rg8 25.Rd2 Bg4 26.h3 Ne5 27.Qc3 Bc8 28.Rxd6 Ng5 29.Ng6+ Nxg6 30.Rxg6 Qxc3 31.Rxg8+ Kxg8 32.bxc3.





analysis diagram








Um... sure... right...

Okay, I guess that proves I'm not a computer... Back to the game.

16...Ng5


My opponent hurries to reposition his Knight at f7, for defensive purposes.

You can imagine that Houdini, as a computer, was doubly horrified: Black doesn't play the necessary 16...d6 (leading to only a slight edge for White) and his move allows for the killer 17.f6.

(Silicon Dude! This is a blitz game between two club players! Relax!)

17.Nd5

Of course, everyone saw that 17.f6 again forced a winning endgame, right? After 17...gxf6 18.exf6 Rxf6 19.Rxf6 Qxf6 20.Re8+ Kg7 21.Nd5 Qd4+ 22.Qxd4+ Nxd4 23.Nxc7 Rb8 24.Bc3 Kf7 25.Bxd4 Ne6 26.Be5 Nxc7 27.Rh8 Ra8 28.Bxc7 Kg7 and there you have it...

17...Nf7 18.Bf4



Protecting the e-pawn so that I can play f5-f6, but this was unnecessary, as after 18.f6 Nfxe5 19.fxg7+ Kxg7 20.Qg3+ White's attack would be strong.

18...Re8 19.f6

If it could sigh, I sure that Houdini did when I finally played this move.

19...gxf6


After the proper defense 19...Rg8 White can apply pressure with 20.Qg6 although after 20...Qf8 it would take another tactical mele, starting with 21.Nxc7 to demonstrate my advantage (eventually finding my way to an ending where my Rook and several pawns outweights Black's two extra Knights).

Sometimes it feels that if it were not for mistakes, chess would be too hard.


20.Nxf6


The correct recapture. My 17th move not only kept Black's Queen at home with the threat of Nxc7, it also strongly supported the (eventual) advance f5-f6. Now White's pieces will swarm the Kingside.

20...Kg7 21.Qh7+ Kf8 22.Bxh6+ Ke7 23.Nd5+ Ke6 24.Nf4+


A little nervousness, missing the mate in one, but it did not get away, and I saw it the second time around. 


24...Ke7 25.Ng6+ Ke6 26.Qxf7 checkmate

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