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2, write a 6 × 6 square Cavalier travel solution. Requirements of the take-off position Cavalier arbitrary specified. The preparation of non-recursive procedures, and run routes, and routes are obtained, will be followed by fill in the number of 6 × 6 square, and the output. (Cavalier tour: starting from the initial position, according to the international chess horse walk method, not all regions will be repeated just go again.)