One of two things has happened in this position: Either White has overcommitted his pieces on the kingside and will have to exchange/retreat them or lose them, or Black has allowed too many enemy pieces to penetrate his kingside.

Which of these eventualities is true we can test with an infiltrating move:

<<•> 11. Qf7! ... >

This threatens 12. Qxg7#, but White has several pieces en prise. What if Black takes one?

(a) 11. ...Rxf7 12. Nxf7†, Kg8 13. Nxd8, Bxh6 14. e3 . After White extricates the knight via e6 or b7, he will consolidate with an exchange to the good. This is a clear if not a winning advantage in the endgame.

(b) 11. ...Bxh6?? 12. Qxh7#.

(c) 11. ...fxg5?? 12. Qxg7#.

This leaves Black one desperate defense.

<<•> 11. ...Rg8

12. Qxf6! ... >

Now White threatens in deadly earnest the smothered mate that a move ago was mere mirage.

Again Black can't take anything:

(d) 12. ...e/Bxf6?? 13. Nf7#.

And of course the bishop is pinned and can't take on h6.

This means Black must find a means to defend f7, and of these I see four.

< (1,2) 12. ...Qe8/f8?
13. Nf7† >

Black will have to give up the queen to forestall mate.

< (3) 12. ...Be6
13. Bxg7†, Rxg7
14. Qxg7†, Kxg7
15. Nxe6† >

White emerges a rook and a bishop to the good.

< (4) 12. ...Be8
13. Bxg7†, Rxg7
14. Qxg7†, Kxg7
15. Ne6† >

And here White has an extra rook.

All things considered, Black's best chances seem to lie in note (a), where he is "only" the exchange down. But if that is the most he can do to punish White's infiltration, then it appears we have our answer: It is not that White has overcommitted, but that Black has underdefended.

I think this was meant to refer to Black's position, although to me it looks more like a Grünfeld gone catastrophically awry.

1. Don't develop your Queen before the minor pieces.

2. Don't move a piece more than once before all pieces are developed.

3. Don't begin attacking until your King is safely castled.

Do we have a theme for this week's puzzles?

11...Bxh6 12.Qxh7#

11...fxg5 12.Qxg7#

Those are obvious.

11...Rxf7 12.Nxf7+ Kg8 13.Nxd8 Bxh6 14.Nxb7

11...Rxf7 12.Nxf7+ Kg8 13.Nxd8 b6 (trap) 14.Bxg7 Kxg7 15.O-O-O and white is up the exchange.

The candidate I think is most interesting is 11...Rg8:

12.Qxf6 Bxf6/exf6 13.Nf7#

12.Qxf6 Qf8 13.Bxg7+ Qxg7 14.Nf7#

12.Qxf6 Qe8 13.Nf7+

12.Be8 Bxg7+ 13.Rxg7 Qxg7+ 14.Kxg7 Ne6+

on strict behaviour in aka 11.Qf7 look hope see i,

light up the corridor shaft in 7f it now in rook hook dash up AI 11...Rxf7 12.nxf7+ in king ghosting ha longer finger inceed the point having bishop,

came queen to the rescue hands off in g8 a fly 13.nxd8 Bxh6 or dervish in g7 and i flipflop,

exchange up ride a lion g5 back in the mix,

In days to come, when he has shuffled into the afterlife, he will face the eternal vengeance of an outraged Caissa. He'll surely be sorry then.

Since it involves a knight move, I think I may see your problem. ;-)

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Analysis by Rybka 3 32-bit :

1. ² (0.68): 8...Bf6 9.Qg3 Bc6 10.e3 Qd5 11.Qxc7 Nd7 12.h4 Nc5 13.Be2 Ne6

2. ± (0.76): 8...Bxh6 9.Qxh6

Black is still worse in line #1 but not immediately losing.

But after 8..0-0 White gets his tactics with the Black king attacked.

9.Ng5!

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Analysis by Rybka 3 32-bit :

1. (1.46): 9.Ng5 f6 10.Qc4+ e6 11.Nxe6 Bxe6 12.Qxe6+ Rf7 13.Bf4

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Kaminski,Roman (2315) - Csoma,Robert (1970) [A16]
ICCF Jubilee Email P045, 2001