Sunday, February 15, 2015

The Silicon Defense

The Dubuque Chess Journal of July 1874 contained the following:
Note: It should be understood that Mr. Jerome claims in this New Opening "only a pleasant variation of the Giuoco Piano, which may win or lose according to the skill of the players, but which is capable of affording many new positions and opportunities for heavy blows unexpectedly."
The following game from Bill Wall, with a King hunt and (with best resistance) a checkmate in 10 moves, seems to fit the bill.

Wall,B - Guest2258681, 2015

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 d6 

Although not given a specific title, I have begun to call this the "Annoying Defense", although I suppose, since it is the choice of several computer chess programs, I could also call it the "Silicon Defense" - but it would still be annoying.

8.fxe5 dxe5 9.Rf1 Nf6 10.Qg5 

According to The Database, this is a TN. Bill has played a half-dozen games with 10.Qh3+.


Bill suggests instead either 10...Rf8 or 10...Qd4

11.Qxg7 Nxe4 

Black's Plan: Open the d8-h4 diagonal for the Queen to fly to h4 and deliver check to White's King - But Bill gets his Queen to Black's King first. Better was 11...Be7. 


Bill points out the alternative, which seems equally effective: 12.Qg4+ Kd5 13.Qf3 (13.c4+!? Kd6 14.Qxe4) 13...Bd4

12...Kd6 13.Nc3

The position is about equal. Remember the old Jerome Gambit aphorism, however: when White equalizes, the first player is better.


Continuing with the aforementioned plan, which leads to danger. Not 13...Nxc3? 14.Rf6+; but 13...Bf2+ would give Black chances, as Bill points out: 14.Rxf2 (14.Ke2? Bg4+; 14.Kd1? Nxc3+ 15.bxc3 Bg4+) 14...Nxf2 15.b3 (15.Kxf2? Rf8)  equal game. 


Not 14.Kd1? Bg4+. 


It is all difficult now, as Bill notes - as long as White continues to find the right moves: 14...Qxh2 15.Nxe4+ Kc6 16.c4or 14...Nxc3 15.gxh4; or 14...Qg4 15.Qd5+ Ke7 16.Nxe4


Not the time to waver: 15.Kd1? Nxc3+ 16.dxc3 Bg4+; or
15.Ke2? Bg4+. 


Black throws in the "kitchen sink" as well, but calmer alternatives don't help, either: 15...Qg4 16.Nb5+ Kc5 17.Qxc7+ Kxb5 18.a4+ Kb4 19.d3; or 15...Nxc3 16.gxh4

White now checkmates his opponent's King. Can you weave the mating net?

16.Nb5+ Kc5 17.Qxc7+ Kxb5 18.a4+ Ka6 

Or 18...Kb4 19.Qc3#

19.Qd6+ b6 

Giving in faster is: 19...Ka5 20.Qc5+ Ka6 21.Qb5

20.Qd3+ Kb7 21.Qd5+ Kb8 

Or 21...Ka6 22.Qb5+ Kb7 23.Rf7+ etc. 

22.Qxe5+ Kb7 23.Rf7+ Black resigned

No comments: