==================================
Alphametic – Logical number puzzle
==================================
Each letter stands for a unique number. The goal is to replace all letters with numbers so that the arithmetic problem shown is correct.

Different letters must never have the same number.


 BROWN
−  RED
− BLUE
──────
 GREEN


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Table for assigning letters to numbers
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+---+---+---+---+---+---+---+---+---+---+
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
+---+---+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |   | L |
+---+---+---+---+---+---+---+---+---+---+

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Solution to the Alphametic puzzle
=================================
The following solution shows the correct assignment of letters to numbers that makes the calculation work.

Each assignment is unique and fulfills all conditions of alphametics.


 83042
−  391
− 8659
──────
 73992


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Correct letter-number assignment
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+---+---+---+---+---+---+---+---+---+---+
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
+---+---+---+---+---+---+---+---+---+---+
| U | O | N | W | D | R | E | G | B | L |
+---+---+---+---+---+---+---+---+---+---+