+---+---+---+---+---+---+---+---+
| K | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | V | |
+---+---+---+---+---+---+---+---+
| | O | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | M | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | W |
+---+---+---+---+---+---+---+---+
| | | | X | | | | |
+---+---+---+---+---+---+---+---+
| | | Z | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | N | | | |
+---+---+---+---+---+---+---+---+

Complete the above grid such that:

- Each of the letters
**K** to **Z** represents a different integer from 1 to 16.
- Each of the columns, each of the rows and each of the main diagonals equals
**A**.
- Each of the 16 letters from
**K** to **Z** is repeated precisely four times in the above grid.
**A** = **P*****T** + **R**
**Z** = 2***R**
**N** = **V**/3
**T** = **Y** - (**N** + **K**)
**U** = **S** + **L**
**M*****Q** + **O** + **K** = **W** + **X**