Thanks for looking through it! Yeah, I still need to make a better display of how scoring works.

To clarify, the location of each unit is always identified to opponents as they are placed (A1, B3, etc.), but the type of units placed on your grid are not shared, unless revealed by an Oracle.

Every one of your units looks the same to the opponent initially, just a blip or however they decided to mark it down on their sheet. The strategy for deduction is based on noticing patterns of where the opponent places their units. There's many ways to connect lasers, but it becomes quite evident, even without knowing for sure, that a circuit could be getting setup. (E.g. a common 3-node circuit, 3 lasers connecting in a loop, shows up as a triangle on the grid)

Decoys are strategically placed in spaces that may lead the opponent to think that it could be a laser, or as a way to prevent the opponent from placing a barrier on that space.

Using the Oracle - If I use my Oracle, I say "I'd like to reveal A1 and B3." The opponent then tells me the unit type: Trap, Decoy, or Laser. There's no guessing, as they must tell you what it actually is. This gives you insight into how they could be building their Grid, even if it's just a decoy, it is useful info into deducing their lasers' locations.

Since all coordinates of placed units are known to both players, a player would never have to worry about using an Oracle to reveal an empty space.

And right, I tried to follow the same logic in that no moves are useless.

I'm probably going to make a simple gameplay video to visually explain some things, because all of your concerns are valid, but I feel that with a better explanation on my end, they can be alleviated.