Use reasoning to lead to the answer of the following question:
Dan loved playing chess but he just couldn't anymore. He had been debilitated by what?\nOptions:\n- boredom\n- humility\n- arthritis\n- frustration\n- headaches
 Reasoning process:
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Game of chess uses brain and when one has headache they cannot concentrate. Headache can cause great pain and debilitate people into not playing chess. Therefore, the final answer is headaches.
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