This room was too difficult
You had to rely on not only logic and skill,
but mere luck.

The route of the lower monster is changed.
 
 

Even if you figured out how to
get out of this room with all the diamonds,
and succeeded with the trick,
the chances that you should get stuck were still big.

A part of the brick wall changed into earth.
 
 
 

In this room you initially had to
rely on mere luck.
 

The consequent puzzles of the room are kept.
 
 

In this room too you had to
rely on mere luck in addition to
logic and skill.

The original puzzle of the room is kept,
and one more puzzle is added.
 

Solving the clue this of room
could often turn out to be not rewarded.
 

v1.1, one diamond added to the room.
 
 

v1.3/1.4, a little more added to the room.
 
 

This room made an unintended shortcut possible.

A square of earth changed into metal.

In this room too you had to
rely a lot on mere luck.

One monster moved,
and several tubes added.