Secret Passage Rules

[GaryVoshol]

Yeah, enter the opponent's SECRET PASSAGE from the COURTYARD only.

I think I need sleep.

[Boltman]

Basically you can use your SP anytime

You can use your opponent SP to and from their courtyard (But risk foul if touched by opponent)
You may not enter or leave opponents SP from Neutral (Foul)

[GreyingJay]

Think of it like a literal secret passage on a castle. You build all these defenses and walls to keep out enemies, but you are aware of secret passageways to get in and out of your own castle, so you are free to use them whenever. But when facing your opponent castle, you don't know where their secret passage is, or even if they have any, so as far as you know, it doesn't even exist.

It might have been interesting if they had added more facets to the game revolving around this. For example, what if, after you have successfully breached the castle defenses, you were then able to freely use the opponent secret passage (i.e. you've "discovered" it)?