Grando
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Okay. Since at least one person didn't immediately understand what Caliban wrote, I'll explain in more detail how I understood it.
The host, if he decides to cheat, takes the text file of the template he needs (for example, 8xm12a), replaces the names in the text file and within the template with "Only XL."
And confidently plays 8xm12a while the opponent sees the name "Only XL."
I haven't even checked, maybe I'm wrong. But it looks logical and obvious at first glance. That's how I understood Caliban.