That's a question that should be forwarded to MindSports.io directly, as I'm not sure if there's a fool-proof way to do so. Perhaps they will check your move and move time against popular AIs like StockFish to see if there is a strong correlation.
I do know that they penalize things like stalling and disconnecting, though that will definitely not cover people using other computers/bots
Hi guys, we will have anti-cheating mechanisms installed within the network. which can detect correlations with bots and AI. Although, we cannot entirely eliminate the problem of cheating, we believe the social engagement aspect and decentralized governance system will produce a fairer ecosystem. To prevent issue of sandbagging, players with lower reputation scores are limited to a cap on token wagers. We let the community to determine whether players are likely to cheat. In order to align the interest with all members, users who vote on the outcome will have a reputation score as well and is awarded with MIND tokens accordingly. Blockchain technology ensures that game logs and the players reputation are impermeable and transparent.
Great! Official answer here ^ :)