Reading Width

   

The reading width of a tactical analysis can be defined as the number of variations one explores while trying to reach conclusion about a certain position. The number of moves one "sees" at any step of the analysis is largely influenced by knowledge and intuition.

The other important factor in tactical analysis is reading depth.

Example

[Diagram]

Experienced level

An experienced player doesn't need to explore this situation, because he knows White can kill at a.

[Diagram]

Vital point knowledge

Someone who doesn't know this position by heart, but has some basic knowledge about vital points, will normally investigate only a and b.

[Diagram]

Vital point knowledge

After the W1-B2 exchange, one will take another look at a and b, before reaching conclusion.

[Diagram]

Vital point knowledge

Likewise here.



So, for a player with basic knowledge of vital points, the width of this position is about 4.

[Diagram]

Complete beginner

For a complete beginner, not having any knowledge of vital points, any of the six points is a viable starting point. This gives a width of about 6!=720 variations, before capture is reached. This position hence is out of reach for a complete beginner, unless gifted with exceptional reading abilities.


It is said that what distinguishes the professionals from the amateur, is that they are far more capable in keeping the width of their analysis under control, rather than being much better at reading very deeply.


This is a copy of the living page "Reading Width" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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