So it turns out you're a couple of years too late; some guy called Azlan Iqbal has already created a chess-problem-creating AI called Chesthetica.
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I had no idea. I use a Genetic Algorithm to evolve Chess boards to a solution which is a different approach than what Chesthetica uses. I didn't spend thousands of hours on my Chess Problems generator! My implementation isn't deep and I've been thinking about generating Go problems, and with a little more work a better set of Chess problems too!