This is great! Though I think hints would make the secret rulesets more feasable, like how the rules are allowed to be structured (will adjacency ever matter?) I lost the will to puzzle solve during the OXY puzzle.
Maybe a tutorial given rule every time a new type of rule becomes relevant? Again this one is extremely polished, would have finished it with hints! The deduction is excellent!
I liked the idea of presenting different types of rules without revealing the actual rule. I just wrote it down for future versions.
It's a shame it didn't continue in OXY, and to answer your question, in this specific rule, the block you're in matters to the next adjacent block. So you're right.
Thank you very much for taking the time to write a very interesting review that will help me plan future versions.
