No, it is trivially easy for a human to learn perfect play on tic-tac-toe. Not so with chess. For the vast majority of players, they will never get close to a perfect level of play or perfect recall so the game will still be able to challenge the vast majority of players (and probably all players even).
Of course, chess will be a challenge to *everyone*. The question really is, Do people want to take up a challenge when it's been solved or conquered by computers? Of course, some people will. So then, the real question is, "Will interest in chess dwindle *significantly* as a result of AlphaZero?"
Now one answer could be, "Nah, interest in chess didn't dwindle significantly when Deep Blue defeated World Champion Garry Kasparov, did it? In fact, it increased! So why would AlphaZero's triumph cause interest in chess to decrease?"
I don't know. That's a valid response.
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