Mouse scale puzzle | Nancy Drew: Tomb of the Lost Queen

Check the scale and 9 mice above the plaque.
The aim of the puzzle is to find the mouse that is the lightest.

Amateur

Place 3 mice on each pan. Press the scale button on top to weigh. The bottom button is to reset the puzzle.

A. If they weigh the same, use the remaining 3: Check which is lighter. If the scales are even, the one in reserve is the lightest.

B.  If one is lighter, take off the heavier one and check the 3 mice that are lighter.

Use the remaining 3:  one on each pan and one in reserve. Check which is lighter.
If the scales are even, the one in reserve is the lightest.


Master

Place 5 mice on each pan. Press the scale button on top to weigh. The bottom button is to reset the puzzle.

A. If they weigh the same, use the remaining 3: Check which is lighter.
If the scales are even, the one in reserve is the lightest.

B.  If one is lighter, take off the heavier one and work on the 5 lighter mice.
Use the remaining 5:  2 on each pan and one in reserve. Check which is lighter.

If the scales are even, the one in reserve is the lightest.
If not even, use the 2 from the light pan and weigh.