Tuesday, January 10, 2006
Multiple Theme Sacrifice
White to Move
Sacrifices are one of the most intriguing and yet difficult parts of chess I have run across. They appear so rarely in a typical chess game that it's easy to miss, and even when handed a problem where you kind of expect to be going that route it's still often challenging to calculate. I see another complicating factor as multiple tactics which my composition above hopefully illustrates.
Using Burgess's tactical semantics (which seems to differ from others') I see the best line as follows:
Bxg7+
- Clearance along the sixth rank giving the White Rook access to the h6 square
- Destruction of both the Black King's cover and the h6 defender
forcing ...Qxg7
- Deflection of the Black Queen away from its absolute pinning of the White Rook
- Decoy of the Black Queen onto a square that both keeps the Black King hemmed in and puts the Black Queen into an absolute half-pin. (I think "Half-pin" comes from Nimzovich's terminology - means that the pinned piece can move towards the pinning piece.)
Rh6#
This position obviously is artificial, but I found it really difficult to put all 4 of these themes in an example of any kind.
-=-=-=-=-
TCT is going along ok, but I really look forward to being done. I look forward to being in a more balanced study mode, but for now I aim to average 15 minutes a weak opening review.
A blog related thing - Following the trend I have added a RSS feedburner page, although I'm not sure if it was needed. What Druss has going looks nice.
-=-=-=-=-
TCT Results | Circle 1 | Circle 2 | Circle 3 | Circle 4 |
| Step 1 | 97% | 99% | 99% | 100%r |
| Step 2 | 93% | 96% | 95% | 97% |
| Step 3 | 93% | 97% | 97% | 96% |
| Step 4 | 80% | 86% | 90% | 92% |
| Step 5 | 74% | 77% | 83% | 88%* |
Comments:
<< Home
They appear so rarely in a typical chess game that it's easy to miss
That depends on what you are used to. Once I had a series of 30 OTB games with 24 piece sacrifices (of mine)in it. And countless pawn sacrifices. The past half year I remember at least two games with 3 piece sacrifices in one game. The last ended in a draw, by the way:)
That depends on what you are used to. Once I had a series of 30 OTB games with 24 piece sacrifices (of mine)in it. And countless pawn sacrifices. The past half year I remember at least two games with 3 piece sacrifices in one game. The last ended in a draw, by the way:)
your last two posts are interesting. I find it difficult to discribe chess positions and tactical formations. I am glad the position of a "half pin" has a name. I had never heard it before.
That relies on the you happen to be employed to. Once I had a compilation ofCheapest wow gold Thirty OTB online games using Twenty four bit eschew (of acquire)from it. As well as a great number of pawn sacrifices. Days gone by fifty percent calendar year I recall no less than two online games using Three portion sacrifices in a single video game.Cheapest Diablo 3 gold The last led to the sketch, incidentally:)
Post a Comment
# posted by 
: 11:11 PM
: 11:11 PM << Home
