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IP address: 172.70.131.191 ≠ 172.70.130.161
Time: 2025-03-12T15:37:36Z
URL: https://scholar.google.com/scholar?q=If+at+First+You+Don%27t+Succeed%3A+Helping+Players+Make+Progress+in+Games+with+Breaks+and+Checkpoints.