I was quite pleased that I managed to come up with the combat mechanic, and especially with the slowly revealed squares v. question marks.
It is more related to "rock scissors paper" that I first realized, but with a greater facilities for mitigating the RNG.
And I've had several thoughts since the original concept in ways to modify it differently.
For example: more rows, more columns, an "advantage/disadvantage".
In any case, this is not the last time I'll be using this combat mechanic.
Thanks for playing.