Concentration in chess is no less important than in boxing – loss of concentration is fraught with rapid defeat. Here’s what it says about concentration on Wikipedia:
Concentration of attention is the retention of information about an object in short-term memory. This retention involves the allocation of the “object” as a concept from the general idea of the world.
Concentration of attention is one of the properties of attention. Other properties of attention: stability, volume and switchability. Violation of the ability to concentrate is called “distracted attention.”
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