In Arena, recently I studied the game record of the top-ranked player. I found that Arena can easily be ranked first through cheating. The principle is as follows:
Register a new account. This way, you can join a turn-based game simultaneously with your main account and the new one. Since there are few players in turn-based games, there is a high probability that both your accounts will be placed at the same table and be visible. Thus, you only need to wait for the third player, and then you can ensure that your main account becomes the winner. By studying the opponents of his main account, you find that a new account has played 30 games, and 20 of them were lost to the same ID. This is evidence of cheating.
Register a new account. This way, you can join a turn-based game simultaneously with your main account and the new one. Since there are few players in turn-based games, there is a high probability that both your accounts will be placed at the same table and be visible. Thus, you only need to wait for the third player, and then you can ensure that your main account becomes the winner. By studying the opponents of his main account, you find that a new account has played 30 games, and 20 of them were lost to the same ID. This is evidence of cheating.