Here is the Solution if the unique weight is number 6

and is LIGHTER than all the others (followed by Solution if

it was HEAVIER than all the others).

Weigh#1

Place 1 2 3 4 on Left and Place 5 6 7 8 on Right

Either 1 2 3 or 4 is Heavy or 5 6 7 0r 8 is Light

Weigh#2

Place 1 2 6 on Left and Place 3 4 5 on Right

Either 1 2 or 6 is Light OR 3 4 or 5 is Heavy

Must be 6 is Light or 3 or 4 is Heavy

Weigh #3

Place 3 on Left side of scale and Place 4 on Right side

Scale is in balance

Therefore 6 is the Unique one and is Light

*******
Here is SOLUTION if weight number 6 is Heavy

Weigh #1

Place 1 2 3 4 on Left side Place 5 6 7 8 on Right

Solver now knows Unique Weight is either 1 2 3 or 4 as LIGHT

OR 5 6 7 or 8 as Heavy

Weigh #2

Place 1 2 6 on Left Place 3 4 5 on Right

Left side is Heavy OR Right side is Light

Analyze previous Weigh resultS

It must be that 3 or 4 is Light or 6 is Heavy

Weigh #3

Place 3 on Left AND Place 4 on Right

Scale is in balance

Therefore it is 6 being Heavy

**Return to Start Page**