Ki and Gil will enter this room through the door at the top-left of it. It contains ten Black Captain Knights (which take 142 hits to kill and have yellow visors) and five Golden Mirror Knights (which take 175 hits to kill). The room that the door at the bottom-right leads to is also physically impossible.
The first key at the bottom-left of the room opens the door at the bottom-right of the room, the second key at the bottom-left of the room opens the door at the centre of the room, and the second key at the top-right of the room opens the aforementioned door at the top-left of the room. The first key at the top-right of the room does not open up any of the doors in the room, meaning that it is only there to confuse the room's first-time visitors.
That door at the bottom-right of the room leads to Mazy Quarter (Room Pass: YC2), that door at the centre of the room leads to Fire Escape (Room Pass: D3Y, same as Treasure Storage), and the aforementioned door at the top-left of the room leads back to Alchemist's Room (Room Pass: 9V7).
