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These people played chess in a beautiful park, and it seems that nothing will distract them.
Maybe that is what we should do, if we want to improve our concentrating skills....or just to have the opportunity to be outside (calm relaxed) to center our minds...to help us focus;
or like the following image - maybe the challenge of playing in public, with an audience, feeling the pressure, yet ..to overcome that and keep concentrating & focussing on the game...