This puzzle is a combination of a word puzzle, a number sequence puzzle, and basic arithmetic.
- Rearrange the letters of the word "extension" to create the names of three whole numbers.
- Write the three numbers in the three yellow boxes below in increasing order to create a number sequence.
- Continue the sequence by finding the next nine numbers to put in the remaining boxes in increasing order.
- Take the numbers that correspond to the letters in the sequence and use to solve for "X" in this equation: X=(K+L+M+N)-(A+B+C+D+E+F+G+H+I+J)+(J-D)
- Take "X" and subtract from the last three numbers of the North fake coordinates and then subtract 402 to obtain the final North coordinates.
- Take "X" and add to the last three numbers of the West fake coordinates and then add 300 to obtain the final West coordinates.
![Extension puzzle](http://img.geocaching.com/cache/031029c2-8404-4aa7-9395-59e6f2632f68.jpg)
You can check your answers for this puzzle on GeoChecker.com.
Notes:
04/18/2017: geocache moved to a different location.