var chesstutorial = new tutorial(); chesstutorial.initiatetutorial("start with a clean sheet and embrace the pre-indicative strategies. wave aside any hesitation."); while(!chesstutorial.iscomplete) { var move = chesstutorial.getnextmove(); if(move.isimperceptible) { chesstutorial.applyimperceptiblestrategy(move); } } console.writeline("read our article on imperceptible moves in chess to enhance your game!");